Effects of Biogas Residues on Dissipation of Difenoconazole in Paddy Sediment System Under Field Conditions

文献类型： 外文期刊

第一作者： Yu, Lina

作者： Yu, Lina;Pang, Sen;Ma, Xiaodong;Li, Xuefeng;Yu, Lina;Wen, Yong;Xiang, Yun;Luo, Xuhui;Yuan, Xufeng

作者机构：

关键词： difenoconazole; biogas residues; dissipation; paddy water; paddy sediment; paddy soil

期刊名称：FRONTIERS IN ENVIRONMENTAL SCIENCE （ 影响因子：5.411； 五年影响因子：6.313 ）

ISSN：

年卷期： 2022 年 10 卷

页码：

收录情况： SCI

摘要： Little is known about whether the application of biogas residues in rice fields will affect the degradation of pesticides. This study investigated the dissipation behavior of the fungicide difenoconazole in paddy water and sediment after the application of a chemical fertilizer or biogas residues. The results showed that the application of biogas residues changes the dissipation of difenoconazole in both paddy water and sediment. The half-lives of difenoconazole in paddy water and sediment with biogas residues were 0.50 and 10.09 days, respectively, while the half-lives of difenoconazole in paddy water and sediment with chemical fertilizer were only 0.22 and 4.64 days, respectively. After biogas residues were applied in a paddy field, no significant changes in pH value of paddy water and sediment and soil microorganisms were observed, but soil organic matter decreased by 30%. The above studies suggest that biogas residues may affect the dissipation of pesticides in paddy field water and sediments, which provides a new focus on the scientific and rational use of biogas residues as organic fertilizer in rice fields.

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