Effects of Radix Asparagi interplanting in oil tea forest on soil

doi:10.14088/j.cnki.issn0439-8114.2023.09.017

Abstract

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

CLC Number:

S714

KANG Hong-xia, PAN Gao-an, LIU Yin, XIAO Geng-yun, LI Fu-shen, WANG Jing-song, WU Guo-wen. Effects of Radix Asparagi interplanting in oil tea forest on soil[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(9): 93-96.

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