湖北农业科学 ›› 2023, Vol. 62 ›› Issue (9): 93-96.doi: 10.14088/j.cnki.issn0439-8114.2023.09.017

• 园艺·特产 • 上一篇    下一篇

油茶林套种天门冬对林地土壤的影响

康红霞1, 潘高安1, 刘银1, 肖耕耘1, 李付伸1, 王劲松1, 吴国文2   

  1. 1.广西壮族自治区国有维都林场,广西 来宾 546100;
    2.广西壮族自治区林业科学研究院,南宁 530002
  • 收稿日期:2022-07-11 出版日期:2023-09-25 发布日期:2023-10-24
  • 通讯作者: 吴国文(1990-),男,工程师,主要从事林业工程研究工作,(电话)18172295810(电子信箱)2782426086@qq.com。
  • 作者简介:康红霞(1989-),女,湖南娄底人,工程师,主要从事油茶、桉树培育工作,(电话)18172295871(电子信箱)986908062@qq.com。
  • 基金资助:
    广西创新驱动发展专项资金项目(桂科AA20302021-8); 广西自筹经费林业科技项目(桂林科研[2022ZC]第103号)

Effects of Radix Asparagi interplanting in oil tea forest on soil

KANG Hong-xia1, PAN Gao-an1, LIU Yin1, XIAO Geng-yun1, LI Fu-shen1, WANG Jing-song1, WU Guo-wen2   

  1. 1. Guangxi Weidu State Forest Farm, Laibin 546100, Guangxi, China;
    2. Guangxi Academy of Forestry Sciences, Nanning 530002, China
  • Received:2022-07-11 Online:2023-09-25 Published:2023-10-24

摘要: 为了解油茶林套种天门冬对林地土壤的影响,分析了油茶林套种天门冬林地的土壤含水量、土壤容重、土壤养分、土壤呼吸强度与酶活性指标的变化情况。结果表明,油茶林套种天门冬明显降低了林地土壤的含水量和呼吸强度,与对照相比,2020、2021年和2022年油茶林套种天门冬林地土壤的含水量分别下降4.24、3.19、2.42个百分点,土壤容重分别上升3.73%、2.99%和2.24%,呼吸强度则分别下降28.29%、30.32%和33.81%;土壤养分方面,套种天门冬林地土壤的全氮、全磷、全钾和碱解氮含量没有明显变化,但土壤有机质、速效钾含量下降明显,与对照相比,2020、2021年和2022年油茶林套种天门冬林地土壤有机质含量分别下降16.81%、21.61%和24.81%,速效钾含量分别下降28.46%、33.42%和35.88%,微生物量碳含量分别下降25.23%、29.59%和32.15%;而速效磷含量分别提高28.76%、33.53%和37.20%;土壤酶活性方面,套种天门冬对林地土壤的蔗糖酶和脲酶活性影响不明显,但是土壤过氧化氢酶和磷酸酶活性明显提高。油茶林套种天门冬在一定程度上会降低林地土壤肥力,在套种经营中要有针对性地施用钾肥,以便获得更好的经济收益。

关键词: 油茶(Camellia oleifera), 天门冬(Radix Asparagi), 套种, 土壤性能

Abstract: In order to understand the effects of interplanting Radix Asparagi in the oil tea forest on soil, the changes of soil water content, bulk density, nutrients, respiratory intensity and enzyme activity were analyzed. The results showed that the soil moisture content and respiration intensity of forest soil were significantly reduced by the interplanting of oil tea forest Radix Asparagi. Compared with the control, in 2020, 2021 and 2022, the soil moisture content of forest soil decreased by 4.24, 3.19 and 2.42 percentage points, respectively, and the soil bulk density increased by 3.73%, 2.99% and 2.24%, respectively. Respiratory intensity decreased by 28.29%, 30.32% and 33.81%, respectively. In terms of soil nutrients, the contents of total nitrogen, total phosphorus, total potassium and alkaline hydrolytic nitrogen in the interplanting Radix Asparagi forest soil didn’t change significantly, but the contents of soil organic matter and available potassium decreased significantly. Compared with the control, in 2020, 2021 and 2022, the contents of soil organic matter in the interplanting Radix Asparagi forest soil decreased by 16.81%, 21.61% and 24.81%, respectively. The available potassium content decreased by 28.46%, 33.42% and 35.88%, and the microbial biomass carbon content decreased by 25.23%, 29.59% and 32.15%, respectively. The content of available phosphorus was increased by 28.76%, 33.53% and 37.20%, respectively. In terms of soil enzyme activities, the interplanting of Radix Asparagi had no significant effect on the activities of sucrase and urease, but the activities of catalase and phosphatase were significantly increased. To some extent, the interplanting of Radix Asparagi in the oil tea forest would reduce the soil fertility of forest land, so it was necessary to apply potash fertilizer in the interplanting management in order to obtain better economic benefits.

Key words: Camellia oleifera, Radix Asparagi, interplanting, soil properties

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