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1、圆园17,36(7):1226-1231农业环境科学学报2017年7月允燥怎则灶葬造燥枣粤早则燥鄄耘灶增蚤则燥灶皂藻灶贼杂糟蚤藻灶糟藻薛利红,何世颖,段婧婧,等.基于养分回用-化肥替代的农业面源污染氮负荷削减策略及技术[J].农业环境科学学报,2017,36(7):1226-1231.XUELi-hong,HEShi-ying,DUANJing-jing,etal.Agriculturalnon-pointsourcepollutionsourcenitrogenloadreductionstrategyandtechnologyofnutrie
2、ntreusinginagriculturalfieldstoreplacefertilizer[J].允燥怎则灶葬造燥枣粤早则燥-耘灶增蚤则燥灶皂藻灶贼杂糟蚤藻灶糟藻,2017,36(7):1226-1231.基于养分回用-化肥替代的农业面源污染氮负荷削减策略及技术1,21,21,21,21,2*薛利红,何世颖,段婧婧,张志勇,杨林章(1.江苏省农业科学院农业资源与环境研究所,南京210014;2.农业部长江下游平原农业环境重点实验室,南京210014)摘要:有效削减农业面源氮污染负荷是提升水环境质量的关键,也是当前关注的热点之一。氮排到水体是
3、污染源,但其本身是农作物生长必需的营养元素。为此,提出了基于养分回用-替代化肥的农业面源污染氮负荷削减策略,利用农业生产系统对农业面源污染排放的氮进行消纳和回用,减少农田化肥氮投入并有效削减排入到水环境中的氮,达到农业生产与环境保护的双赢。重点介绍了面源污水中氮的农田直接回用、水生植物回收-有机肥还田替代、环境材料吸附净化-回收还田等几种技术途径及其应用,并指出了目前存在的不足及以后发展的方向。关键词:农业面源污染;氮负荷;养分回用;化肥替代中图分类号:X592文献标志码:A文章编号:1672-2043(2017)07-1226-06doi:10
4、.11654/jaes.2017-0949Agriculturalnon-pointsourcepollutionnitrogenloadreductionstrategyandtechnologyofnutrientreusinginagriculturalfieldstoreplacefertilizerXUELi-hong1,2,HEShi-ying1,2,DUANJing-jing1,2,ZHANGZhi-yong1,2,YANGLin-zhang1,2*(1.InstituteofAgriculturalResourcesandEnvi
5、ronment,JiangsuAcademyofAgriculturalSciences,Nanjing210014,China;2.KeylaboratoryofAgro-EnvironmentindownstreamofYangtzeRiverPlain,MinistryofAgriculture,Nanjing210014,China)Abstract:Theeffectivereductionofagriculturalnon-pointsourcenitrogenpollutionloadisthekeytoimprovewateren
6、vironmentalquality,anditisalsooneofthehotissuesintheworld.Nitrogenisapollutantwhendischargedintothewater,butitisanessentialmacro-nutrientforcrops.Therefore,astrategyofreusingthenitrogenfromagriculturalnon-pointsourcepollutionasanutrientintheagriculturalsystemtore原placechemica
7、lfertilizerwasputforwardinthispaper.ThenthetechnicalapproachestoreducetheNloadfromagriculturalnon-pointsourcepollutionbasedonthisstrategywereintroduced,includingthedirectirrigationwiththepollutedwaterintofarmland,usingtheaquaticplantstoabsorbthenitrogenthenproduceorganicferti
8、lizerandapplytothefarmland,usingtheenvironmentalmaterialtoadsorbthen