[Effect of Microplastics and Straw Addition on Nitrogen and Phosphorus Leaching in Orange Orchard Soils].

Q2 Environmental Science
Zhi-Jie Zheng, Xing-Jun Xiong, Xiu-Ling Zhang, Wei Sun, Hua Gao, Yong Zheng, Rong-Gui Hu, Shan Lin
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引用次数: 0

Abstract

To explore the effects of microplastic input and straw addition on nitrogen and phosphorus leaching in orange orchard soil, indoor soil column leaching simulation experiments were conducted on orange orchard soil in Dangyang City, Hubei Province. The experiment analyzed the effects of different treatments on the leaching characteristics of soil nitrogen and phosphorus. The results showed that: ① The increase in microplastic input increased the leaching capacity of the soil (TN, NO3--N, NH4+-N, and TP) when only microplastic input was added. ② Under the addition of straw, the input of microplastics increased, which reduced the leaching amount of TN and NO3--N in the soil, and increased the leaching amount of NH4+-N and TP in the soil. ③ Under the input of microplastics, the key influencing factors of soil nitrogen and phosphorus leaching were soil bulk density and water content. Under straw addition, it was mainly affected by soil carbon and nitrogen content. Among them, microplastic input and straw addition significantly increased soil pH, but their path coefficients for nitrogen and phosphorus leaching were not significantly correlated. The results showed that the effects of polypropylene microplastic input and straw addition on soil nitrogen and phosphorus leaching were related to the amount of microplastics input and whether straw was added. The results showed that the input of microplastics would increase the amount of soil nitrogen and phosphorus leaching. Although nitrogen leaching loss caused by microplastic input could be reduced under straw addition, soil phosphorus leaching loss was significantly increased.

[微塑料和秸秆添加对橙园土壤氮磷沥滤的影响]。
为探讨微塑料投入和秸秆添加对桔园土壤氮磷淋溶的影响,在湖北省当阳市桔园土壤上进行了室内土柱淋溶模拟实验。实验分析了不同处理对土壤氮磷淋溶特性的影响。结果表明:①增加微塑料添加量提高了土壤(TN、NO3--N、NH4+-N、TP)的淋洗能力;②增加微塑料添加量降低了土壤(TN、NO3--N、NH4+-N、TP)的淋洗能力。在只添加微塑料的情况下,土壤(TN、NO3--N、NH4+-N 和 TP在添加秸秆的情况下,微塑料投入量增加,土壤中 TN 和 NO3-N 的淋失量减少,土壤中 NH4+-N 和 TP 的淋失量增加; ② 在添加秸秆的情况下,微塑料投入量增加,土壤中 TN 和 NO3-N 的淋失量减少,土壤中 NH4+-N 和 TP 的淋失量增加。在微塑料添加条件下,土壤氮磷淋失的主要影响因素是土壤容重和含水量。在添加秸秆的情况下,主要受土壤碳和氮含量的影响。其中,微塑料的投入和秸秆的添加显著提高了土壤的 pH 值,但它们对氮和磷淋失的路径系数没有显著相关性。结果表明,聚丙烯微塑料投入量和秸秆添加量对土壤氮、磷淋失的影响与微塑料投入量和是否添加秸秆有关。结果表明,微塑料的投入会增加土壤氮和磷的淋失量。虽然在添加秸秆的情况下,微塑料的加入会减少氮的淋失,但土壤磷的淋失却显著增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Huanjing Kexue/Environmental Science
Huanjing Kexue/Environmental Science Environmental Science-Environmental Science (all)
CiteScore
4.40
自引率
0.00%
发文量
15329
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