浙江农田氮磷生态拦截沟渠建设对农业面源污染防治的启示OACHSSCD
Construction of Ecological Ditches for Agricultural Nitrogen and Phosphorus Interception in Zhejiang:Implica-tions for Controlling Agricultural Non-point Source Pollution in China
有效治理农业面源污染是持续推进我国农业绿色化发展和农村生态文明建设的重要内容.农田生态沟渠是近年来广泛应用于农田退水中氮磷消减的重要工程设施之一.本文以浙江省全域尺度深入实施的农田氮磷生态拦截沟渠技术体系为研究对象,系统论述了浙江省开展农田氮磷生态拦截沟渠建设的时代背景、模式体系、作用效果与实施困境.结果表明,浙江省生态沟渠系统对农田退水中 NH4+-N、TN、TP 和 COD 的平均拦截率分别达31.1%～85.1%、16.6%～55.9%、27.7%～66.9%和16.6%～57.3%;经净化后沟渠末端水体质量较农田出水口可提高 1～1.5 个标准等级;沟渠中增加氮磷拦截设施可对农田退水中污染物的拦截率提高约 20%.尽管拦截降污的作用显著,但浙江省沟渠建设和运维中依然受到不同地域农田管理措施所引起的污染特征差异和资金来源有限的制约.综上,通过对浙江省生态拦截沟渠建设和运维的系统总结,以期为我国面源污染防治提供技术借鉴和模式参考.
The effective governance of agricultural non-point source pollution is essential for enhancing the agricultural ec-ological environment.It also promotes green sustainable agricultural development,and constructing rural ecological civili-zation in China.Recently,ecological ditches have been widely implemented to reduce nitrogen and phosphorus levels in agricultural runoff.This article systematically discusses the demand for controlling agricultural non-point source pollution in Zhejiang Province,the technical models and operational mechanisms of ecological interception ditches.In addition,it evaluates the effectiveness of these ditches in reducing nitrogen and phosphorus,and identifies the challenges encountered during their implementation.The results indicate that the ecological ditch system in Zhejiang Province achieves average in-terception rates for NH4+-N,TN,TP,and COD in agricultural drainage water,ranging from 31.1%-85.1%,16.6%-55.9%,27.7%-66.9%,and 16.6%-57.3%,respectively.After purification,the water quality at the outlet of the dit-ches can be improved by 1.0-1.5 standard grades compared to that at the fields drainage outlets.Additionally,the instal-lation of nitrogen and phosphorus interception facilities within the ditches can enhance the interception rate of pollutants in agricultural drainage by approximately 20%.Despite the significant role of interception in pollutant reduction,the con-struction and maintenance of ditches in Zhejiang Province still face challenges due to variations in pollution characteristics arising from different regional agricultural management practices and limited funding sources.In summary,this systematic overview of the construction and operation of ecological ditch systems in Zhejiang Province aims to provide technical refer-ences and model insights for the prevention and control of non-point source pollution in China.
施秀姣;徐琳玲;葛佳颖;聶新军;周小军;高红贝
金华市农业农村生态与能源技术推广站,浙江 金华 321017金华市农业农村生态与能源技术推广站,浙江 金华 321017浙江省耕地质量与肥料管理总站,浙江 杭州 310020浙江省耕地质量与肥料管理总站,浙江 杭州 310020金华市农业科学研究院,浙江 金华 321017浙江科技大学环境与资源学院,浙江 杭州 310023
资源环境
农业面源污染农田退水生态沟渠氮磷拦截化肥减量
agricultural non-point source pollutionagricultural water drainageecological ditchnitrogen and phosphor-us interceptionreduction of chemical fertilizer application
《生态与农村环境学报》 2026 (8)
1059-1070,12
浙江省粮油产业技术项目(2023-83)浙江省"三农九方"科技协作计划(2024SNJF066)
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