Relationship between soil temperature and moisture and root growth of tobacco in Panzhihua City

doi:10.14088/j.cnki.issn0439-8114.2022.15.017

Abstract

Abstract: In order to clarify the influence of temperature and moisture on the tobacco root development, and provide data support for regulating root growth in production,the changes of soil temperature and humidity under the conventional management were analyzed,and the relationship between average temperature and humidity and root parameters during the monitoring period was studied by detecting the roots of tobacco plants. The results showed that the soil temperature gradually decreased from transplanting to the end of harvest, and the average soil temperature in the morning was lower than that in the afternoon, and the soil temperature of the rhizosphere was significantly lower than that in the middle of the two tobacco plants in both morning and afternoon. The soil moisture of the rhizosphere was basically maintained from transplanting to the end of harvest, and the soil moisture between the two tobacco plants increased beginning and then stabilized. The soil moisture of the rhizosphere was significantly higher than that between the two tobacco plants. The total root length, total surface area and number of root tips were significantly positive correlated with soil temperature and soil moisture, and the root average diameter and number of forks were significantly positive correlated with the soil moisture between the two tobacco plants. In terms of time, the correlation between soil temperature and root parameters in the morning was higher than that in the afternoon. The correlation coefficient between the soil moisture of the rhizosphere and root parameters in the afternoon was higher than that in the morning, while the correlation coefficient between the soil moisture between the two tobacco plants and root parameters in the afternoon was lower than that in the morning.

Key words: soil temperature, soil moisture, tobacco, root growth, Panzhihua City

CLC Number:

S572

MAO Min, PAN Xing-bing, BAI Jia-lin, LIU Yu, YUAN Jia-fu, XU Xiang-yu. Relationship between soil temperature and moisture and root growth of tobacco in Panzhihua City[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(15): 107-111.

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