Table of Content

25 September 2022, Volume 61 Issue 18

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Breeding & Cultivation

Breeding and application of a new millet variety Zhenggu No. 3 with double herbicide resistance

FAN Yong-qiang, WANG Yan-hui, LIU Jin-zhe, ZHANG Xiao-shen, DONG Ya-nan, HAN Yan-li

2022, 61(18):  5-10.  doi:10.14088/j.cnki.issn0439-8114.2022.18.001

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In order to meet the needs of millet production and solve the problem of weeds in the millet field, Zhengzhou Institute of Agriculture and Forestry Sciences used the method of killing males in warm soup, with the excellent herbicide resistant strain AN 10-4172 as the female parent and the intermediate material resistant to imidazole ethylnicotinic acid （Fu 532 × M24） as a male parent, which was sexually crossed and continuously selected in Zhengzhou and Hainan. The new double herbicide resistant summer millet variety Zhenggu No. 3 was bred in 2015. This variety participated in the regional test of millet varieties in Henan Province from 2016 to 2017, with an average yield of 5 780.0 kg/hm², an average increase of 5.72% compared with the control variety Yugu No. 9, and a pilot yield increase rate of 93.75%. Zhenggu No. 3 has the characteristics of resistance to imidazole ethylnicotinic acid, resistance to sethoxydim, excellent quality, high and stable yield, high yield potential, good agronomic characters and strong comprehensive resistance. It is suitable to be planted in the summer millet area of Henan and other places.

Comparison of photosynthetic characteristics and chlorophyll fluorescence parameters between wild species and Huaiyushan cultivated species of Tetrastigma hemsleyanum Diels et Gilg wild cultivated specie and cultivated specie

XIONG Ke-bing, HONG Sen-rong, CAI Hong, CHEN Rong-hua

2022, 61(18):  11-15.  doi:10.14088/j.cnki.issn0439-8114.2022.18.002

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In this study, the wild Tetrastigma hemsleyanum Diels et Gilg wild species FJ-WYS and the cultivar Huaiyu 2 were selected as the research object to study the differences in photosynthetic characteristics, chlorophyll fluorescence parameters, chlorophyll content, leaf length, leaf width and leaf type index. The results showed that the intercellular CO₂ concentration （Ci）, steady-state fluorescence （Fs）, chlorophyll content （SPAD）, leaf length and leaf type index of Huaiyu 2 were significantly higher than those of FJ-WYS, while the stomatal limit value （Ls）, water use efficiency （WUE）, net photosynthetic rate （Pn）, instantaneous carboxylation rate （CUE）, minimum initial fluorescence （Fo） and leaf width of FJ-WYS were significantly higher than those of Huaiyu 2. The photosynthesis of Huaiyu 2 was weaker than that of FJ-WYS, and there was no positive correlation between photosynthesis and chlorophyll content and leaf type index.

Resource & Environment

Study on wet damage zoning of Winter Wheat in late growth stage of Hubei Province

LIU Yin-xiu, KUANG Xiao-wei, ZHANG Zu-qian

2022, 61(18):  16-22.  doi:10.14088/j.cnki.issn0439-8114.2022.18.003

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The data from 23 representative stations in Hubei for 50 years from 1971 to 2020 were selected, and each station 50-year wet weather coefficient and the maximum value of wet weather coefficient in 5 years were calculated by using the daily observation data from meteorological stations in April-May of calendar years, with relative humidity reaching 85% at 2, 8 and 20, and 82% at 14, and the average daily temperature ≥ 12.0 ℃ for more than 30 h as the wet section weather criteria. The annual precipitation, precipitation days and sunshine hours in late March-late May were used to calculate the flooding index of each decade, and the number of flooding index greater than 0.5, 0.8 and 1.1 in each station was counted. The results of wet weather coefficient method and flooding index method for the late growth of wheat in Hubei Province showed that the main dividing line was north of Jingmen City-north of Xiaogan City-north of Wuhan City, and the wet damage was less in the north of the main dividing line. The further north the area, the less the wet damage; the wet damage was serious in the south of the main dividing line. The further south the area, the more severe the wet damage. The mountainous area in southwest Hubei was a heavier area of wet damage. The rhynchosporium disease in Xiantao City corresponded well with the flooding index from 2013 to 2020. Considering the topography and terrain, the areas other than the northern part of Jianghan Plain, especially the low-lying fields in the lake area, were the areas prone to flooding for a longer period of time; the valley paddy fields in the hilly areas in the south of Hubei also had flood-prone areas. In the land planting planning, more wheat can be planted in areas with light wet damage, and wheat planting can be minimized in areas with serious wet damage. In the prevention and control of wet damage, drainage and irrigation should be separated. In low-lying fields, open drainage plus underground buried pipes are used to reduce the water table. By dredging "three ditches" and often loosening the soil, the rise of groundwater can be inhibited, and excessive wet cultivation layer can be prevented; crops of different heights can be interplanted to improve the utilization of light energy and reduce field humidity.

Preparation of water-soluble fertilizer containing calcium and magnesium trace elements and analysis of its seed soaking performance

HE Zi-jian, HAN Xiao-zhao, HUANG Han-da, ZHANG Xu, LIU Ya-hua, KONG Shuai

2022, 61(18):  23-28.  doi:10.14088/j.cnki.issn0439-8114.2022.18.004

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According to the content of trace elements in watermelon, the formula was designed and the effect of different Ca+Mg concentrations on the phase balance of Zn（NO₃）₂-Mn（NO₃）₂-H₂O system at 10 ℃, pH=3, and Ca/Mg ratio 1 was studied by the isothermal dissolution equilibrium method. Based on the phase diagram, the liquid water-soluble fertilizer products containing medium amount of calcium and magnesium and meeting the agricultural industry standard of trace element water-soluble fertilizer （NY 1428—2010） were prepared. The watermelon seed soaking test showed that the seed soaking effect was better when Ca+Mg=40 g/L, Zn+Mn=126 g/L liquid water soluble fertilizer diluted 600 times.

Screening of three salt-tolerant bacteria and removal effect of Bacillus cereus on Cr（Ⅵ）

WANG Chao, XU Jing, ZHANG Qian-xi

2022, 61(18):  29-33.  doi:10.14088/j.cnki.issn0439-8114.2022.18.005

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In order to explore the microbial resources for Cr（Ⅵ） wastewater treatment under high salt conditions,the underground brine and surrounding soil of Changshan salt mine in Zigong, Sichuan was taken as the research materials in this experiment. Three strains of salt tolerant bacteria N1, N2 and N3 were isolated and purified, identified as Bacillus cereus, Bacillus altitudinis and Shewanella sp. after 16S sequencing. The trend of low concentration promotion and high concentration inhibition was showed when the three strains grew at different NaCl concentrations N1, N2 and N3 strains grew normally under 10% NaCl concentration; when the NaCl concentration reached 15%, N1 strain could grow normally. At the same time, the growth of N2 and N3 strains was inhibited to varying degrees. The results reflected that the salt tolerance of strains was N1 > N2 > N3. N1 strain with the best salt tolerance was selected as the test strain to study the removal effect of Cr（Ⅵ）. When concentration of NaCl was 10% and Cr（Ⅵ） was 40 mg/L, the removal rate of Cr（Ⅵ） reached 81.2% after 72 h. The removal speed of Cr（Ⅵ） was positively correlated with cell concentration.

Soil erosion in Yuxi City based on GIS and RUSLE

SUN Yong-qi, LI Jian-hua, LIU Shi-xin, FU Jing

2022, 61(18):  34-39.  doi:10.14088/j.cnki.issn0439-8114.2022.18.006

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The general soil erosion equation （RUSLE）, geographic information and remote sensing technology were combined, and the spatial distribution of soil erosion intensity in the study area was obtained by using the grid calculation function of ArcGIS. The final results showed that the average soil erosion in Yuxi City was 1 043.03 t/（km²·a）, of which the area of slightly eroded soil was 863 497.62 hm², accounting for 57.844% of the total area of Yuxi City, and the area of lightly eroded soil was 33.486% of the total area of Yuxi City. The area of moderately eroded soil accounted for 7.503% of the total area of the city. The main categories of soil erosion in the city were mild and slight erosion. The areas with severe soil erosion were concentrated in the southwest and southeast, mainly in the Yuanjiang, Lvzhijiang and Qujiang basins.

The spatio-temporal pattern analysis of water resources utilization efficiency in the Yangtze River Economic Belt based on DEA-ESTDA

ZHANG Cheng-qi, GAO Qian-xi, DAI Yu-kun, CHEN Yu-yang

2022, 61(18):  40-47.  doi:10.14088/j.cnki.issn0439-8114.2022.18.007

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The DEA -Malmquist model that considers undesired output was used to calculate the changes in water resource utilization efficiency（WRUE） of 11 provinces（cities） in the Yangtze River Economic Belt from 2001 to 2018, while ESTDA was used to analyze the temporal and spatial changes of WRUE. The results showed that the WRUE of the Yangtze River Economic Belt was increasing during the observation period. The spatial agglomeration of WRUE in the Yangtze River Economic Belt was significant with volatility to some extent. The WRUE was more likely to form adjacent linkage areas in space. To be detailed, HL pattern agglomeration and HH pattern agglomeration tended to appear in upstream and the coastal areas downstream. The local spatial structure of WRUE in the upstream region was more dynamic. The provinces with positive synergistic growth accounted for 54.54% of the total, mainly located in the middle and downstream regions. From the perspective of the period, the spatio-temporal cohesion of WRUE was slightly stronger than the spatio-temporal flux, but it was still plastic. Therefore, it is necessary to strengthen regional cooperation, optimize the spatial distribution of input resources, and improve the utilization efficiency of water resources.

Verification and error analysis of quantitative precipitation forecast products based on fast fusion technology in Wuhan

LIU Pei-ting, CHEN Wei, XU Ying-chun, LIU Huo-sheng, PANG Jing, ZHANG Li, WANG Rui-li

2022, 61(18):  48-60.  doi:10.14088/j.cnki.issn0439-8114.2022.18.008

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Using a combination of Hubei weather radar network puzzle data and precipitation observations from Wuhan and surrounding ground-based encrypted automatic stations from March to September 2018, fast fusion and other techniques were used to establish dynamic Z-I relationships suitable for Wuhan localized optical flow method and TREC method to obtain high spatial and temporal resolution radar quantitative precipitation inversion data 2 h QPF in real time, and the data SWAN 1 h QPF was used to compared and analyzed. The results show that, in general, the optical flow method based on radar extrapolation and automatic station fast fusion technology is the best, and the TS integrated average is about 3 percentage points higher than that of SWAN. The three methods of QPF with 9-point or 25-point averaging can improve the relative and absolute errors, but have less contribution to improving the forecast accuracy, while the neighborhood method can improve the forecast accuracy significantly and also reduce the rate of empty and missed reports to some extent. In a comprehensive comparative analysis of the regional and local dispersion processes, the optical flow method is the best, the TREC method is the second best, and the SWAN method is the least effective in the magnitude below heavy rainfall. The greatest differences are mainly concentrated in the regional processes. At the heavy rainfall and heavy rainfall magnitudes, although SWAN has higher scores in the regional processes, it performs unstable in the local processes, while the optical flow method is relatively more stable in the local processes.

Study on characteristics and influencing factors of rain fog events in Hubei Province

CHEN Ying-ying, CHENG Dan, TAN Jing, HE Ming-qiong, WANG Li-juan, FU Zhi-kang

2022, 61(18):  61-66.  doi:10.14088/j.cnki.issn0439-8114.2022.18.009

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Based on the observation data of rainfall, relative humidity, wind direction, wind speed and minimum visibility of 81 national stations in Hubei Province from 2016 to 2019, and combined with the environmental monitoring data of Wuhan, this paper makes a statistical analysis of the low visibility events caused by precipitation. The results show that in addition to fog, rainfall is the main impact of low visibility in Hubei Province （33.7%）, among which, the proportion of light rain is the largest. The proportion of rain fog process （hourly rainfall 0~1 mm） in five different low visibility ranges is more than 60%, which is the dominant factor leading to low visibility events. The lowest visibility of rain fog process is mainly distributed in 500~1 000 m, the proportion of 95%~100% relative humidity is 85.09%, the wind speed is mostly concentrated in the interval of 1~2 m/s, the static wind frequency is 0, and the wind direction is basically northerly. Hubei rain fog process is easy to occur in winter, which may be related to the high concentration of pollution in winter static and stable weather. Rain fog process may occur in all periods of the day, the period from 22：00 to 09：00 of the next day is the daily high incidence period, and Yichang City and Xianning City are high incidence areas of rain fog in Hubei Province. The analysis of typical examples shows that high raindrops number density and small drop velocity may be the main factors causing low visibility of rain fog.

Characteristic analysis of wet blub zero layer in Hubei Province

PANG Jing, YUAN Kai, ZHANG Li, LI Wu-jie

2022, 61(18):  67-71.  doi:10.14088/j.cnki.issn0439-8114.2022.18.010

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Using the sounding data from Ankang, Enshi and Wuhan stations from January 1, 2005 to December 31, 2021, and the ground observation and disaster data in Hubei Province during the same period, we analyzed and discussed the seasonal variation of the height of wet blub zero （WBZ） and the height difference between dry blub zero （DBZ） and wet blub zero （WBZ） in different regions of Hubei Province. The seasonal variation of the difference between DBZ and WBZ heights is much smaller than that of WBZ heights, and it is the largest in autumn in east Hubei, the largest in summer in northwest Hubei, and the largest in summer in southwest Hubei. The frequency of WBZ height in each season shows that the probability of WBZ height in spring and autumn is 2 500~ 3 500 m. The WBZ height in summer is significantly higher than that in other seasons, and the lowest in winter. The probability of occurrence of DBZ and WBZ height difference in each season is seen： the probability tends to decrease with increasing height, and the maximum probable height of DBZ and WBZ height difference in spring, autumn and winter are all below 500 m. The synthetic analysis of the main hail weather processes in different regions of Hubei shows that the largest WBZ variation when there is hail occurs in southwest Hubei and the smallest in northwest Hubei. The highest average WBZ height when hail occurs is in southwest Hubei. The DBZ and WBZ height differences are in descending order in Northwest, East and Southwest Hubei.

Plant Protection

Gray relation analysis method of meteorological factors impacting wheat scab in Chuzhou

YU Ling-hua, CHEN Xi, ZHANG Xin-tong, XING Cheng, XIA Meng-jin, MIAO Xin-wei, YUE Wei

2022, 61(18):  72-77.  doi:10.14088/j.cnki.issn0439-8114.2022.18.011

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Based on wheat scab data and daily meteorological data during wheat growth period in seven counties （cities and districts） in Chuzhou City from 2005 to 2020,using the correlation coefficient method and the gray correlation analysis method, the correlation and influence between wheat scab occurrence and meteorological factors were analyzed. The results showed that the incidence of wheat scab in Chuzhou City had been increasing; there was a significant negative correlation between high temperature in overwintering period and wheat scab; the rainfall, number of rainy days, relative humidity, hours of sunshine during the wheat jointing to booting period, number of rainy days, relative humidity, sunshine hours, mean wind speed during the wheat heading anthesis period, the mean air temperature, rainfall, number of rain days, relative humidity, sunshine hours, mean wind speed during grain filling period were all significantly correlated and highly relevant with the degree of wheat scab in Chuzhou City; the number of rain days in the grain filling period was the most closely related meteorological factor for scab, followed by the rainfall from jointing to booting period and the relative humidity in the grain filling period. The sunshine hours in the grain filling period had the least correlation.

Study on screening methods of bio-fungicide from microorganism

ZHANG Zhi-gang, WANG Kai-mei, WU Zhao-yuan, WAN Zhong-yi, FANG Wei

2022, 61(18):  78-83.  doi:10.14088/j.cnki.issn0439-8114.2022.18.012

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Using Colletotrichum gloeobosporioides, Fusarium oxysporum, Botrytis cinerea, Pythium aphanidematum as the model targets, six fungi standard strains and six actino standard strains were tested by semi-solid medium method （PDB medium with the appropriate amount of agar） and disk diffusion method （PDA medium）. The activities of fermentation broth, supernatant and mycelium of fungi and actino were compared by semi-solid medium method and agar disk diffusion method. The results showed that the activity of the sample was directly related to the screening method and incubation time. The activity resolution of fermentation broth and mycelium in semi-solid medium method was blurring, and the activity response to the supernatant of standard strains of fungi and actino was clear; in the agar disk diffusion method, with the increase of culture time, the activity of fermentation broth and mycelium increased, while the activity of the supernatant of standard strains of fungi and actinomycetes fungicides decreased. The semi-solid medium method was suitable for the screening of supernatants without living cells, and the agar disk diffusion method was suitable for the screening of fermentation broth and mycelium with living cells. Selecting the appropriate screening method and culture time according to the type of sample could reduce the false negative results.

Isolation and identification of pathogen of Lilium davidii var. unicolor scale air culture rot

HU Yu-meng, CAO Cai-xia, LYU Li-zhen, JU Xiu-ting

2022, 61(18):  84-87.  doi:10.14088/j.cnki.issn0439-8114.2022.18.013

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In order to identify the pathogen species of Lilium davidii var.unicolor scale rot during air culture, different diseased tissues were collected, isolated, purified and determined pathogenicity. At the same time, the isolates were identified by morphology and molecular biology based on rDNA-ITS sequence analysis, and the phylogenetic tree was constructed to identify the pathogenic bacteria species. The results showed that a total of 18 fungal strains were isolated and purified, among which 4 strains could cause air culture scale rot of Lilium davidii var. unicolor. The four strains were identified by morphology as Fusarium oxysporum and Fusarium fujikuroi, which belonged to two types of Fusarium. The results of molecular biological identification showed that the four strains clustered in a large tree-like branch with multiple sequences of Fusarium in the phylogenetic tree, among which 1-A-11 and 10-A-2 had more than 99% sequence similarity with Fusarium oxysporum, and strains 10-A-1 and 1-B-1 had more than 99% sequence similarity with Fusarium fujikuroi. It was indicated that Fusarium oxysporum and Fusarium fujikuroi were the pathogens causing the scale rot of Lilium davidii var. unicolor in the process of air culture, and the incidence of Fusarium oxysporum and Fusarium fujikuroi were 95% and 75%, respectively.

Horticulture & Local Products

Effects of number and node position of retained melon on growth and development of muskmelon

HE Shu-peng, YAN Zi-qian, YU Han, LI Ze-chen, CHEN Xiao-feng

2022, 61(18):  88-91.  doi:10.14088/j.cnki.issn0439-8114.2022.18.014

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Luhoutian No.1 was used as experimental material to study the effects of the number and node position on the growth and development of muskmelon in solar greenhouses. The results showed that in the single melon treatment, the T2 treatment （the 14th node left a single melon） had the highest soluble solid content, the T5 treatment （the 20th node left a single melon） had the highest hardness, T3 treatment （the 16th node left a single melon） had the highest VC content and texture density, and the T2 treatment （the 14th node left a single melon） had the highest yield and commodity melon rate. Among the treatments with double melons, T6 treatment （the 8th and 18th nodes with double melons） had the highest plot yield, commodity melon rate, and net density, while the soluble solid content, hardness and VC content of the double melon treatments were almost the same. Compared with double melon treatment, the yield of single melon treatment decreased, but the commodity melon rate and net density were higher and the quality was better.

Content changes of main organic acids and amino acids in Jiuqian plum during its fruit developing stage

CHONG Hui-ying, PAN Shao-zuo, LI Bing-jing, LIU Guo-hua, WANG Dai-bo

2022, 61(18):  92-95.  doi:10.14088/j.cnki.issn0439-8114.2022.18.015

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Taking Jiuqian plum（Prunus salicina Lindl.） fruit as the test material, the contents of organic acids and amino acids in the fruit of Jiuqian plum were analyzed by HPLC and LC-MS. The results showed that there were 5 kinds of organic acids and 22 kinds of amino acids in Jiuqian plum. The main organic acids were quinic acid and succinic acid, accounting for 64.35% and 33.16% of the total organic acids, respectively. The main amino acids were asparagine and proline, accounting for 33.69% and 20.82% of the total amino acids, respectively. During the fruit development of Jiuqian plum, the content of quinic acid decreased slowly at first, then increased sharply and then decreased. The content of succinic acid first decreased slowly, then increased slowly and then decreased slowly, and both of them reached the peak at the second fruit expansion stage. The content of asparagine increased sharply at first, then decreased sharply and then decreased slowly, and reached the peak at the early development stage. The content of proline increased sharply at first, then decreased sharply, then increased slowly, and reached the peak at maturity.

Comparative experiment of different Allium ascalonicum cultivars

FU Jia-ping, GUO Feng-ling, WU Jin-ping, ZHOU Jie, QI Chuan-dong, JIAO Chun-hai

2022, 61(18):  96-99.  doi:10.14088/j.cnki.issn0439-8114.2022.18.016

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In order to screen out the varieties of Allium ascalonicum suitable for local cultivation in Hubei Province, the varietal evaluation experiment of eighteen collected Allium ascalonicum cultivars was conducted under the same planting density. The results showed that Gushui Allium ascalonicum had moderate weight per plant, the highest yield, strong fragrance, and strong resistance; the commercial character and the main agronomic character were good. It was suitable for local promotion in Hubei Province.

Analysis on the relationship between mineral elements and sensory quality of cigar tobacco leaves in Laifeng County

LIU Li-ping, WANG Jian, SHI You-zhi, HU Jie, TAN Zai-yu, ZHU Jin-xiang, LUO Ji-hong, PAN Yong

2022, 61(18):  100-102.  doi:10.14088/j.cnki.issn0439-8114.2022.18.017

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In order to understand the relationship between mineral elements content and sensory quality of cigar tobacco leaves, the samples were collected in Manshui Town, Lvshui Town and Jiusi Town of Laifeng County for the measurement of nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, boron, zinc, iron and sensory quality. The results showed that the contents of nitrogen, sulfur, potassium, zinc and chlorine in cigar tobacco leaves were higher in Lvshui Town, phosphorus and iron contents were higher in Manshui Town, and calcium and magnesium contents were higher in Jiusi Town and Manshui Town. The sensory quality of cigar tobacco leaves was best in Manshui Town, followed by Jiusi Town, while it was significantly negatively correlated with nitrogen, potassium, chlorine, sulfur and zinc contents, and the correlation coefficients were -0.708, -0.753, -0.627, -0.616, -0.757, respectively. There was a positive correlation between tobacco calcium content and sensory quality, and the correlation coefficient was 0.663. Stepwise regression analysis indicated that the nitrogen and potassium contents were the main mineral elements affecting the sensory quality of cigar leaves （both negative correlation）, and the regression equation was Y=107.08-6.22X₁-2.24X₂ （R=0.854）.

Distribution patterns of shoots, flowers and fruits in Camellia indochinensis var. tunghinensis canopy and their relationships

QIN Hui-zhen, NONG Yue-xiang, ZOU Rong, CHAI Sheng-feng, WEI Xiao, SHI Yan-cai, WEI Ji-qing

2022, 61(18):  103-107.  doi:10.14088/j.cnki.issn0439-8114.2022.18.018

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The distribution patterns and their interrelations of branches, flowers and fruits in the canopy of wild Camellia indochinensis var. tunghinensis were investigated with the stratified survey method. The results showed that Camellia indochinensis var. tunghinensis grew slowly, it bloomed when its base diameter got 1.5 cm; the branch composition of Camellia indochinensis var. tunghinensis was complex, its multi-branched series was up to 6 levels, 3~6 levels were increasing from the top canopy to the bottom, and the 5 and 6 levels were 4.06% and 0.38%, respectively; overall, the third-level branch was the most in the canopy, accounting for 38.37% of total fruit branch. The number of nutrition branches was more than the budding ones, and the latter was descending from middle top to bottom along the canopy, while the former was different; the branching angle was small, 70°~90° accounted for 11.56% of the total; there were many flower buds, but the rate of fallen ones was high. The flowers distributed on 2~4 leaf positions in 1~3-year-old branches; fruits mostly distributed in the middle and bottom of canopy, and the peripheral was more than the center. The number of branches, flower buds and fruits in different canopy layers was closely correlated.

Cluster analysis of yield per plant and volatile oil content of high-quality germplasm of Curcuma kwangsiensis

YANG Ni, XIE Wei, WANG Jian

2022, 61(18):  108-112.  doi:10.14088/j.cnki.issn0439-8114.2022.18.019

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The yield per plant, the content of volatile oil and the chemical composition of different Curcumae kwangsiensis were analyzed and compared. Referring to the standard of Chinese Pharmacopoeia （2015 edition）, the yield of Curcuma kwangsiensis was determined. The volatile oil was extracted according to the determination method, and the selected Curcuma kwangsiensis germplasm materials with high yield and content of volatile oil were analyzed by GC-MS method. SPSS 22.0 software was used to cluster the volatile oil components of Curcuma kwangsiensis, combined with the yield and content of volatile oil and other data to analyze the feasibility of screening excellent germplasm. The results showed that there were significant differences in the yield and chemical composition among 150 different Curcuma kwangsiensis germplasm. Eighteen excellent germplasm resources were selected. With the yield and color of volatile oil as variables, 18 germplasm materials were classified into 3 categories, 36 components were analyzed by GC-MS, and 2 categories were classified.

Exploring the anti-inflammatory mechanism of Angelica sinensis Radix- Cinnamomi cortex based on GC-MS and network pharmacology

ZENG Ge-ge, LIU Yi, LIU Tian-qi, HUANG Zhen-yang, DING Chen-wei

2022, 61(18):  113-119.  doi:10.14088/j.cnki.issn0439-8114.2022.18.020

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The chemical components of Angelica sinensis Radix- Cinnamomi cortex was identified, and the anti-inflammatory mechanism of the herb pair was predicted in combination with network pharmacology. GC-MS was used to analyze the volatile components of the herb pair, and then the potential targets of the active components were predicted through the TCMSP database and the Swiss Target Prediction database; inflammation-related gene targets were got through TTD database and GeneCards database; Cytoscape 3.7.2 software was used to construct a drugs-components-targets network diagram; string database and Cytoscape 3.7.2 software were adopted to build a target PPI network, then screening out key targets; the Clsuter Profiler program package in R 3.6.1 software was used to perform gene ontology （GO） function enrichment and KEGG pathway enrichment analysis for potential targets. The results showed that 35 kinds of volatile components were identified from the herb pair, accounting for 70.53% of the total volatile components. From the screening, 33 active compounds, 35 key targets, 1 296 biological processes, and 155 signal pathways were obtained. According to the prediction of network pharmacology results, the herb pair may regulate lipids and atherosclerosis, human cytomegalovirus infection, IL-17 and other signaling pathways through active ingredients such as β-caryophyllene, α-humulene, and α-pinene, and key targets such as TNF-, IL-6, and IL-1B, thereby synergistically exerting anti-inflammatory effects.

Research on active components of Lycium chinense and their pharmacological effects

ZOU Xin, CHAN Liu-jia, YI Bing, DING Shi-lei, PEI Dong, WEI Jian-teng, ZHAO Li-chun

2022, 61(18):  120-130.  doi:10.14088/j.cnki.issn0439-8114.2022.18.021

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With the continuous deepening of the research on the traditional Chinese medicine Lycium chinense, it is found that its chemical components are rich and diverse, including alkaloids, polysaccharides, flavonoids, phenylpropanoids and so on. Lycium chinense has a variety of pharmacological activities such as liver and kidney protection, anti-oxidation, anti-aging, anti-tumor, neuroprotective activity, anti-inflammatory, antipyretic, hypoglycemic and so on, and its pharmacological effect research is also expanding. In this paper, the chemical constituents and pharmacological effects of Lycium chinense and Lycium barbarum are reviewed, which can provide reference for the value excavation and resource development of Lycium chinense.

Study in genetic diversity of Gastrodia elata

WANG Cai-yun, HOU Jun, ZHOU Mao-chang, LI Heng-qian, CHENG Zhong-jun, WANG Yong, ZHANG Xiang-yu

2022, 61(18):  131-138.  doi:10.14088/j.cnki.issn0439-8114.2022.18.022

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The research status of genetic diversity in Gastrodia elata at domestic and overseas was reviewed from cytological markers, morphological markers, biochemical markers and molecular markers, and the existing problems were analyzed. The resoures about the genetic diversity of Gastrodia elata were abundant, but there were some problems such as single research methods and one-sided analysis results. So it was proposed to analyze the genetic diversity of Gastrodia elata by comprehensive means and establish the evaluation criteria, in order to comprehensively evaluate and reasonably develop the resources of Gastrodia elata.

Spatiotemporal patterns of leaf dry matter content of Cyclocarya paliurus plantation in southern Henan Province

DUAN Chuan-hong, YAN Yan, WANG Xiao-yun, LIN Jian-jun, HU Jie, ZHOU Chuan-tao

2022, 61(18):  139-143.  doi:10.14088/j.cnki.issn0439-8114.2022.18.023

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In order to improve the management and utilization level of Cyclocarya paliurus leaf forest in southern Henan Province, the dry matter content, relative chlorophyll content and specific leaf area were investigated of Cyclocarya paliurus plantation leaves in different years, months and tree crown positions. The results showed that the leaf dry matter rate of Cyclocarya paliurus plantation in southern Henan Province was the lowest in May, which was 38.38%. And the leaf dry matter rate of Cyclocarya paliurus plantation varied the most in different years in August, the extreme difference was 38.27%. From September to November, leaf dry matter rate tended to be stable at the median level throughout the year. The average dry matter rate varied from year to year, but was relatively stable. In terms of spatial pattern, leaf dry matter content gradually increased with crown height from bottom to top, with mean values of 34.30%, 46.41% and 50.49%, respectively. The dry matter rate of upper leaves was significantly higher than that of lower leaves, but there was no significant difference in leaf dry matter rate in all parts of the tree. The average of relative chlorophyll content（SPAD） was 2.11, 2.51, and 2.63, from top to bottom respectively, and the average of leaf area from bottom to top was 33.43, 21.58, and 18.63 cm²/g, respectively. According to the conclusion, the middle and upper leaves of Cyclocarya paliurus had higher dry matter content, greater leaf density and thickness from October to November, which were easy to be dried or roasted, and more suitable for tea processing. In the management of forest land, through tree body pruning and dwarfing, the upper leaves of Cyclocarya paliurus were used as raw materials to improve the quality of Cyclocarya paliurus leaf tea.

General land use planning of Longhu Town in Xinzheng City

MA Yu-bo, ZHANG Jun-feng, DING Cong

2022, 61(18):  144-150.  doi:10.14088/j.cnki.issn0439-8114.2022.18.024

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Taking the overall land use planning of Longhu Town in Xinzheng City as an example, the spatial coincidence model and the center of gravity shift model were constructed by combining data analysis and spatial analysis, and the consistency between the planning and the current situation was calculated quantitatively from two aspects： The planning implementation process and the implementation result. On this basis, combined with social and economic development, the causes of inconsistency problems were explored, which could provide methodological guidance for the post-evaluation of national spatial planning.

Animal Husbandry & Veterinary Medicine

Safety of Jinhuang Shugan stress powder on target animal in grass carp

XIAO Fei

2022, 61(18):  151-154.  doi:10.14088/j.cnki.issn0439-8114.2022.18.025

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In order to evaluate the safety of Jinhuang Shugan stress powder to Ctenopharyngodon Idella, healthy Ctenopharyngodon Idella were selected and divided into 4 groups for culture experiment： control group, low dose group, middle dose group and high dose group. After 3 weeks, the feeding and activity of each group were observed, and the growth performance, blood physiological and biochemical indexes were determined. The results showed that there were no abnormal changes in feeding, respiration, swimming and appearance. Compared with the control group, the average weight gain rate of the low-and middle-dose test group was increased, but the difference was not significant （P>0.05）, and there was no significant difference in weight gain between the high dose test group and the control group （P>0.05）. The results of blood biochemical indexes and histopathology showed that Jinhuang Shugan stress powder had no effect on the health of grass carp, and Jinhuang Shugan stress powder was safe for Ctenopharyngodon Idella when added to feed.

Effects of cryopreservation time on semen motility and estrus conception rate in Jilin horses

LIU Xiao-hui, LANG Hong-yan, TAN Cheng-cheng, ZHANG Peng-ju, WANG Wei-xia, PU Qing-lin, LI Xin-tao

2022, 61(18):  155-158.  doi:10.14088/j.cnki.issn0439-8114.2022.18.026

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In order to study the effect of cryopreservation time on the semen motility characteristics of Lin horses and the conception rate of mares during estrus, the experiment used citric acid-fructose-Tris-glycerol-yolk as the diluent. In the experimental group, fresh semen and semen stored at low temperature （4 ℃） for 24, 48, 72, 96, and 120 h were collected, and the sperm motility characteristics were detected by conventional sperm quality testing methods. The results showed that compared with fresh sperm, motile sperm motility, forward motility sperm motility, average motility rate and fast motility sperm motility decreased with the prolongation of storage time. When the semen was stored at low temperature （4 ℃） for 0, 24, 48, and 72 h, the estrus conception rates of Jilin horse mares after artificial insemination were 43.33%, 44.00%, 44.45%, and 43.48%, respectively, with no significant difference （P>0.05）. However, after 96 h and 120 h storage, the estrus conception rates of Jilin horse mares after artificial insemination were 36.00% and 10.00%, respectively （P<0.05）, indicating that the effective storage time of Jilin horse semen at low temperature （4 ℃） cannot exceed 72 h.

Study on meteorological service index of grazing activities in Golmud grazing district

LEI Yu-hong, XU Xue-lian, LI Chun-hui, WANG Fa-ke, YAN Liang-dong, HA Jin-long

2022, 61(18):  159-164.  doi:10.14088/j.cnki.issn0439-8114.2022.18.027

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Based on the meteorological data of Tuotuohe meteorological station, Xiaozaohuo meteorological station and Golmud meteorological station from 2000 to 2019, the herbage development period data observed by Tuotuohe meteorological station from 2005 to 2020 and the herbaceous phenological period data of Golmud from 2000 to 2013, combined with the occurrence period of grazing activities, the relevant meteorological indicators of grazing activities are determined by using mathematical statistical methods. The results show that the transition time of summer pasture in Tanggula area is 10~20 days after the first day when the daily average temperature is stable above 5 ℃. The last day when the daily average temperature is stably exceeding 5 ℃ is used as the index of autumn pasture transfer in Tanggula area. The transition time of summer pasture in Golmud basin is 10~20 days after the first day of temperature stably passing 10 ℃; the last day when the daily average temperature is stable above 10 ℃ can be regarded as an indicator of autumn pasture transition in the basin pastoral area. The index of shearing and fleece in Tanggula area is from the first day when the daily average temperature is stably surpassing 10 ℃ to the next 10 days; the index of shearing and fleece in the pastoral area of Golmud basin is from the first day of the daily average temperature over 15 ℃ to the next 10 days. The timescale from the last day of the daily average temperature higher than 0 ℃ to the next 10~20 days is taken as an indicator of the slaughter period in Tanggula area, and it is an indicator of the slaughter period in the basin and pastoral areas from the last day when the daily average temperature is stable above 0 ℃ to the next 15 days.

Storage & Processing

Study on processing technology of jelly of Lycium barbarum and Chinese yam

REN Jia-yu, FAN Na, PENG Xiao-bang

2022, 61(18):  165-168.  doi:10.14088/j.cnki.issn0439-8114.2022.18.028

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The Lycium barbarum and Chinese yam were applied as the main raw materials, konjac flour, carrageenan and sodium alginate were added as the main colloids, and white granulated sugar, citric acid and potassium chloride were also used as ingredients in this test. The processing technology of jelly of Lycium barbarum and Chinese yam was studied by single factor test and orthogonal test through sensory scores. The results showed that the optimal parameters of jelly of Lycium barbarum and Chinese yam were Lycium barbarum and Chinese yam content （Lycium barbarum juice∶Chinese yam juice =2∶1） of 30%, the added amount of gel （konjac flour∶carrageenan∶alginate sodium=1∶2∶1） of 1.2%, the added amount of white granulated sugar of 5.5%, the added amount of citric acid of 0.1%, and the added amount of potassium chloride of 0.04%. The product made according to this formula had a suitable sweet and sour flavor, smooth and delicate taste, and uniform tissue state.

Extraction technology of protein from highland barley distiller's grains

FAN Shi-meng, LIU Hao, OUYANG Jing-yu, LIU Lian, YOU Xiang-yu, SU Jiang-tao, XIAO Hong-wei

2022, 61(18):  169-172.  doi:10.14088/j.cnki.issn0439-8114.2022.18.029

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The protein of highland barley distiller's grains was extracted by alcohol-alkali dissolution and acid precipitation. Based on the single factor experiment, the alcohol-alkali ratio, solid-liquid ratio, extraction time and extraction temperature were selected as the influencing factors. Using the orthogonal experiment of four factors and three levels, and taking the protein extraction rate as the index, the optimal extraction process condition was alcohol-alkali ratio of 1∶3, solid-liquid ratio of 1∶45, extraction temperature of 30 ℃, and extraction time of 90 min. The order of the influence of the various factors on the protein extraction rate was solid-liquid ratio > alcohol-alkali ratio > extraction temperature > extraction time.

Extraction and determination of antioxidant activity in vitro of total flavonoids from Chenopodium formosanum Koidz seeds

LI Tao, LIU Ting, ZHOU Qiong

2022, 61(18):  173-179.  doi:10.14088/j.cnki.issn0439-8114.2022.18.030

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Taking the seeds of Chenopodium formosanum Koidz as raw materials, the orthogonal test method was used to explore the effects of enzyme mass fraction, solid-liquid ratio, enzymolysis temperature and ultrasonic time on the extraction of Chenopodium formosanum Koidz seeds, and the antioxidant activity in vitro was determined by analyzing the scavenging ability of flavonoids from Chenopodium formosanum Koidz seeds to DPPH· and ·OH. The results showed that the best technological condition for extracting flavonoids from the seeds of Chenopodium formosanum Koidz was cellulase with the mass fraction of 0.6%, the solid-liquid ratio of 1∶40, the enzymatic hydrolysis temperature of 60 ℃, and the ultrasonic time of 10 min. Under this condition, the extraction rate of flavonoids was as high as 27.81 mg/g. In vitro antioxidant test showed that the flavonoids extracted from the seeds of Chenopodium formosana Koidz had 92.91% and 94.72% scavenging activity on DPPH· and ·OH, respectively, and had certain antioxidant activity.

Study on the extraction process of chlorogenic acid from discarded tobacco leaves by ethanol assisted with enzyme

CHEN Yue-xing, HUANG Jin-hui, YAN Pei-yun, ZHAGN Xiao-hu

2022, 61(18):  180-184.  doi:10.14088/j.cnki.issn0439-8114.2022.18.031

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Taking discarded tobacco leaves as raw material, the chlorogenic acid was extracted from tobacco leaves by ethanol assisted with enzyme. Single factor experiment was conducted to investigate the effects of soaking temperature, soaking time, extraction temperature, and solid-liquid ratio on chlorogenic acid extraction rate. On this basis, the extraction process was optimized by the response surface experiments. The results showed that the optimized parameters were as follows：soaking temperature 60 ℃, soaking time 1 h, leaching temperature 90 ℃, and solid-liquid ratio 1∶25（m∶V）. Under the above process, the chlorogenic acid extraction rate was 25.709 mg/g, which was consistent with the model predicted value of 25.863 mg/g.

Factors and links affecting the change of fatty acid value in newly harvested maize

JI Li-bo

2022, 61(18):  185-187.  doi:10.14088/j.cnki.issn0439-8114.2022.18.032

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The fatty acid change in northeast corn is divided into four stages. The first stage is in the harvest period, the second stage is the corn cob storage in the yard, the third stage is the large pile of storage before drying after threshing, and the fourth stage is the storage after drying. The first three stages were studied. The results showed that the fatty acid values of different maize varieties from the same producing area were different during harvest, and the maximum difference was 19.6 mg/100 g. The fatty acid value of the same variety of corn from different producing areas was different, and the maximum difference was 10.9 mg/100 g. During the storage of corn cob in the courtyard, the follow-up test lasted for 6 months, rack stacking and roof stacking were better than brick stacking, and the effect of land stacking was the worst. During the storage of high-moisture corn cob, the fatty acid value of non-hot corn heap increased by 0.6~1.9 mg/100 g, and the fatty acid value of hot corn increased by 6.0~14.7 mg/100 g, and the fatty acid value of hot corn increased rapidly.

Information Engineering

Design and research of cold chain logistics system in Shaanxi Province based on WSN and RFID technology under epidemic prevention and control

CHENG Zhi-ping

2022, 61(18):  188-190.  doi:10.14088/j.cnki.issn0439-8114.2022.18.033

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With epidemic prevention and control as the main demand, a cold chain logistics system of fresh agricultural products was designed based on WSN and RFID technology. On the basis of general cold chain logistics mode, this logistics system emphasized on strengthening the design of cold chain monitoring function, which could adjust the state of fresh agricultural products in cold storage and vehicle-borne transportation and reduce the possibility of novel coronavirus pollution of fresh agricultural products in cold chain.

Forecast and analysis of demanel for cold chain logistics of Guiyang's agricultural products under the background of COVID-19

LEI Lei, WU Jie, LI Shu-min

2022, 61(18):  191-195.  doi:10.14088/j.cnki.issn0439-8114.2022.18.034

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The forecast of the demand for cold chain logistics of agricultural products was of great significance to achieve a balance between supply and demand of agricultural products and alleviate the pressure on the supply chain of the logistics system. The relevant data of agricultural products in Guiyang city from 2019 to 2021 were selected, and the grey GM（1,1） model was used to predict the cold chain logistics demand of agricultural products in Guiyang City in the next six years. The results showed that under the new crown epidemic, the overall demand for cold chain logistics of agricultural products in Guiyang was on the rise, and the supply capacity of cold chain logistics of agricultural products must be further strengthened. Based on the perspective of flexible supply chain, it was proposed that the government should establish a supply chain risk management and communication mechanism for the cold chain logistics industry and an operating resource guarantee system for cold chain logistics enterprises of agricultural products. Enterprises should increase investment in intelligent logistics technology, strengthen the construction of digital technology for cold chain logistics of agricultural products and the construction of emergency supply chain for cold chain logistics of agricultural products.

Named entity recognition in agriculture based on BERT embedding and adversarial training

FEI Fan, YANG Lin-nan

2022, 61(18):  196-202.  doi:10.14088/j.cnki.issn0439-8114.2022.18.035

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Named entity recognition task for the agricultural domain is a key step in information extraction and question and answer system in the agricultural domain. The goal of this step is to find out the required named entities from a huge amount of unstructured agricultural texts, which usually have challenges such as diverse entity names and contextual semantics missing. To accomplish the task of recognizing agricultural named entities in complex contexts, this paper first constructs an annotated corpus in the agricultural domain, which contains 16 048 samples of six types of entities; then uses the BERT pre-trained language model as the word embedding layer, which can well solve the problem of different semantics and referents of the same word in different contexts compared with the traditional word embedding model; then uses the BiGRU network model for context encoding; finally, the output sequence is annotated using CRF. At the same time, this paper introduces a certain amount of noise to the input data, which is used for adversarial training to improve the generalization and robustness of the model. After the experiments, the accuracy, recall, and F-value of the proposed model are 92.75%, 91.53%, and 92.49%, respectively. Compared with the baseline model, this method has better performance and can effectively identify named entities in the agricultural field.

Economy & Management

Research on the construction and evaluation of farmers' green agricultural competency model：Taking the farmers in Hubei Province as an example

GUO Si, ZHANG Dong-min, LI Nan, YANG Yu-wei, LI Yuan-fang, XIANG Yan-fei, CHENG Shou-wen

2022, 61(18):  203-209.  doi:10.14088/j.cnki.issn0439-8114.2022.18.036

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In order to provide reference for farmers' green agricultural production and training, based on the research of relevant literature, the competency characteristics of green agriculture of farmers were obtained through the questionnaire survey. The SPSS25 software was used for exploratory factor analysis, and AMOS23 software was used for confirmatory factor analysis. The results showed that the model of farmers' green agricultural competency contained five competency dimensions including farmers' green behavior, farmers' learning ability, farmers' green cognition, farmers' sense of responsibility and policy support, and 19 competency factors. Therefore, according to the research results, appropriate measures should be taken to guide farmers' behavior and improve their quality, and targeted training should be strengthened to gradually improve farmers' green agricultural competence.

Field change and reconstruction： Study on the high-quality development of national sports culture in the context of tourism：Taking the Enshi Tujia waving dance as an example

ZHOU Meng, ZHANG Chun-yan

2022, 61(18):  210-215.  doi:10.14088/j.cnki.issn0439-8114.2022.18.037

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Promoting the deep integration of culture, sports and tourism was an important way to realize the high-quality development of sports culture in ethnic tourism destinations. With the help of Bourdieu's field theory, taking the waving dance of Enshi Tujia as an example, the development and change of national sports culture in the context of tourism was interpreted. Scientific path was put forward such as conservation and innovation of the field cultural capital, cultivation and shaping of field common emotion, and perfecting and upgrading of field management mechanism, which can effectively promote the high-quality development of tourism and national sports culture in the context of tourism.

Research on agricultural product logistics development strategy of small and medium-sized logistics enterprises under the background of market information asymmetry

YU Shao-chen

2022, 61(18):  216-221.  doi:10.14088/j.cnki.issn0439-8114.2022.18.038

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Firstly, the hypothesis of logistics supply chain coordination model was put forward, the profit function of manufacturers and retailers was constructed based on Stackelberg game and single cycle newsboy model, and the logistics supply chain was analyzed; in order to realize the coordination of logistics supply chain, the specific form of repurchase contract was studied; finally, an example was analyzed by MATLAB software. The results showed that under the wholesale price contract, even if the information asymmetry of agricultural products existed, it would not necessarily damage the total income of the supply chain; the repurchase contract could ensure the sharing of agricultural product information and effectively coordinate the supply chain.

Research on the countermeasures of high-quality development of rural tourism in Xi'an City in the era of experience economy

RONG Yan, HU Meng-ru

2022, 61(18):  222-226.  doi:10.14088/j.cnki.issn0439-8114.2022.18.039

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In order to promote the high-quality development of rural tourism in Xi'an City, based on the experience economy era, the development status of rural tourism in Xi'an City and the types of tourism resources were analyzed, so as to find out the problems existing in the development process. It was found that there were some problems in Xi'an City rural tourism, such as imperfect infrastructure, single tourism product development, lack of innovation in tourism projects, insufficient publicity, low quality of employees, insufficient supervision and so on. In view of the above problems, countermeasures and suggestions were put forward, such as optimizing infrastructure, deeply digging cultural characteristics, setting up experiential activity projects, carrying out industrial integration, introducing high-quality talents, and standardizing the management system.

Discussion on the two dimensions of improving the capability of community governance community：Atomized subject and organized subject

ZHANG Man-li

2022, 61(18):  227-232.  doi:10.14088/j.cnki.issn0439-8114.2022.18.040

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This paper started from how to improve the capability of the community governance community, took the atomized subject and organized subject of the community as the breakthrough point, and explored how to enhance the capability of the community governance community by promoting the political participation, economic participation, social participation, transparency guarantee, and defensive guarantee of these two entities. An operational framework was butt for improving the capability of the community governance community with practical application value.

Study on ecological footprint of grain production consumption in China

ZHAO Xiao-yu

2022, 61(18):  233-237.  doi:10.14088/j.cnki.issn0439-8114.2022.18.041

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The ecological footprint method was used to evaluate the impact of grain consumption on sustainable development in China in recent 20 years. The results showed that the average ecological footprint was 0.101 3 hm² per person, exceeding the load. According to the current trend of eating habits in China, the ecological footprint of food consumption will increase with the increase of the proportion of soybean and corn consumption. On this basis, policy recommendations are proposed such as encouraging residents to change eating habits, eating more food crops with high yield per unit and small ecological footprint, cherishing food, loving land, and reducing personal ecological footprint.

Research on mutualistic symbiosis between water conservancy and economic and social development：Taking Hunan Province as an example

KONG Jun, DU Chun-lin, LI Hong-xiang, HUANG Bing

2022, 61(18):  238-244.  doi:10.14088/j.cnki.issn0439-8114.2022.18.042

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Water conservancy was closely related to the development of economic society. It was necessary to construct the mutualistic water conservancy system of “society, economy and ecology” for sustainable development. The symbiotic relationship between water conservancy and the society-economy-ecology system was explained by theoretical analysis and case analysis, and it was pointed out that water conservancy could enhance economic and social development through the complex function system of “society, economy and ecology”. Taking the practice of water conservancy development in Hunan Province as an example, this research analyzed the way that the water conservancy complex function system promoted the sustainable development of the symbiosis system under the mutualism model.

Rural Revitalization

Study on the performance evaluation of high-standard farmland construction in Wuhan City under the background of rural revitalization

DONG Pu-xia, DU Sai-nan

2022, 61(18):  245-250.  doi:10.14088/j.cnki.issn0439-8114.2022.18.043

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Taking the three major grain producing areas in Wuhan City as an example, and the completed eight typical high standard farmland construction projects as samples, this paper considered the implementation process and benefit of the project, built the performance evaluation index system based on the behavior and the results, used the improved grey target model to analyze and evaluate high-standard farmland construction project performance, and finally put forward relevant policy recommendations. The results showed that the integrated target value of eight sampls was 0.596~0.798. Baimiao project area of Liji street in Huangpi district had the best performance, and the "four modernizations synchronization" demonstration town project area of Wulijie street in Jiangxia district had the worst performance. The evaluation results of the project implementation process and the benefit performance were basically consistent with the actual situation of the sample area; the target values of project implementation performance layer and benefit performance layer were 0.180~0.217 and 0.405~0.603, respectively, which suggested that the contribution of the project benefit performance was relatively large; the improved grey target model made up for the deficiency of the old gray target model, and had certain actual application value in terms of the performance evaluation of construction of high-standard farmland.

Research on the relief path of rural home care service under the background of rural revitalization：Based on the perspective of ecosystem theory

CHEN Ji-hua, SHEN Meng-hao

2022, 61(18):  251-256.  doi:10.14088/j.cnki.issn0439-8114.2022.18.044

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In order to build high-quality rural pension services, the development dilemma of rural home care services was studied. Based on the perspective of ecosystem theory, it was analyzed from the three system levels of macro, meso and micro. The results show that there are some problems in rural home care services, such as the outstanding contradictions between supply and demand, the lack of elderly career talents, and the conservative concepts of elderly care. Therefore, in combination with the rural revitalization strategy, suggestions are put forward from the government, community, elderly and other subjects, that is, to strengthen the leading role of the government, strengthen the capacity building of community elderly care services, and establish a correct elderly care concept.