微塑料与秸秆添加对橘园土壤氮磷淋溶的影响  

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

作　　者：郑志杰 熊兴军 张秀玲 孙伟 高华 郑勇 胡荣桂[1] 林杉[1] ZHENG Zhi-jie;XIONG Xing-jun;ZHANG Xiu-ling;SUN Wei;GAO Hua;ZHENG Yong;HU Rong-gui;LIN Shan(Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtze River),Ministry of Agriculture and Rural Affairs,College of Resources and Environment,Huazhong Agricultural University,Wuhan 430070,China;Research Center for Rural Revitalization,Power China Kunming Engineering Corporation Limited,Kunming 650051,China;Shandong Zhengwei Survey and Mapping Corporation Limited,Jinan 250100,China;Wuhan Caidian District Agricultural Technology Extension Center,Wuhan 430100,China)

机构地区：[1]华中农业大学资源与环境学院,农业农村部长江中下游耕地保育重点实验室,武汉430070 [2]中国电建集团昆明勘测设计研究院有限公司乡村振兴研究中心,昆明650051 [3]山东正维勘察测绘有限公司,济南250100 [4]武汉市蔡甸区农业技术推广服务中心,武汉430100

出　　处：《环境科学》2024年第10期6061-6067,共7页Environmental Science

基　　金：国家重点研发计划项目(2023YFD1900902);云南省科技人才与平台计划项目(202205AF150004);湖北省重点研发计划项目(2021BCA156)。

摘　　要：为探究微塑料输入与秸秆添加对橘园土壤氮磷淋溶的影响,以湖北省当阳市橘园土壤为研究对象,进行室内土柱淋溶模拟试验,分析不同处理对土壤氮磷淋溶特征的影响.结果显示:①仅微塑料输入下,微塑料输入量增加会提高土壤(TN、NO_(3)^(-)-N、NH_(4)^(+)-N和TP)淋溶量.②秸秆添加下,微塑料输入量增加,减少了土壤TN和NO_(3)--N淋溶量,提高了土壤NH_(4)^(+)-N和TP淋溶量.③微塑料输入下,土壤氮磷淋溶量的关键影响因子为土壤容重和含水量;秸秆添加下,主要受土壤碳氮含量影响;其中微塑料输入与秸秆添加均显著提高土壤pH,但其对氮磷淋溶量的路径系数未达显著相关.结果显示,聚丙烯微塑料输入与秸秆添加对土壤氮磷淋溶的影响与微塑料的输入量和是否添加秸秆有关.研究表明,微塑料的输入会提高土壤氮磷淋溶量;尽管秸秆添加条件下,可以减少由微塑料输入引起的氮素淋溶损失,但土壤磷素淋溶损失却有显著提高.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:①The increase in microplastic input increased the leaching capacity of the soil(TN,NO_(3)^(-)-N,NH_(4)^(+)-N,and TP)when only microplastic input was added.②Under the addition of straw,the input of microplastics increased,which reduced the leaching amount of TN and NO_(3)^(-)-N in the soil,and increased the leaching amount of NH_(4)^(+)-N and TP in the soil.③Under 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.

关 键 词：秸秆 微塑料(MPs) 氮素 橘园土壤 淋溶 

分 类 号：X53[环境科学与工程—环境工程]