|Table of Contents|

Effects of Soil Moisture on Decomposition of Pepper Straw and Soil Properties at High Temperature

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2024年5
Page:
82-89
Research Field:
Publishing date:

Info

Title:
Effects of Soil Moisture on Decomposition of Pepper Straw and Soil Properties at High Temperature
Author(s):
QIU Meihua1; ZHU Qian2; 3; 4; FAN Xinhui1; LIANG Yonghong1; MA Yan2; 3; 4; LUO Jia2; 3; 4
(1.Jiangsu Province Station of Farmland Quality and Agro-Environmental Protection，Nanjing,Jiangsu 210036；2.College of Resources and Environmental Sciences，Nanjing Agricultural University，Nanjing,Jiangsu 210095；3.National Agricultural Experiment Station for Agricultural Environment in Luhe，Nanjing,Jiangsu 210014；4.Institute of Agricultural Resource and Environmental Sciences，Jiangsu Academy of Agricultural Sciences，Nanjing,Jiangsu 210014)
Keywords:
pepper straw; straw returning; decomposing condition
PACS:
S 156.2
DOI:
10.11937/bfyy.20232227
Abstract:
Taking pepper straw as the test material，the effects of different soil water saturations on the decomposition of pepper straw returned to the field in situ under two soil conditions were investigated,in order to reveal the field decomposition process of vegetable straw and analyze the key environmental factors affecting straw degradation.The results showed that the decomposition effect of pepper straw was different in the two soils,in sandy soil，the decomposition rate was fastest at 80% soil water saturation，while in clay soil，the rate reached a peak at 100% soil water saturation.The same was true for lignin hemicellulose and cellulose,in sandy soils，their decomposition rates were highest when the soil water saturation reached 80%，while in clay soils，their decomposition rates peaked at 100%.In addition，in sandy soil，the intensity and duration of the impact of pepper straw returning to the field on soil pH were lower than those in clay soil.Moreover，the higher the water content，the smaller the change in soil electrical conductivity.The impact of pepper straw decomposition on electrical conductivity in sandy soil was greater than that in clay soil.According to environmental factors correlation analysis and random forest analysis，the results showed that water saturation and degradation time were the two most significant environmental factors affecting the degradation of pepper straw，because they had the highest positive correlation with the degree of decomposition.

References:

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Last Update: 2024-03-28