面向氮淋溶风险防控的畜禽粪便菜地承载力估算

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中图分类号：X713 文献标志码：A 文章编号：1672-2043（2025）11-2806-14 doi：10.11654/jaes.2025-0465

Abstract：Toachieveregionalintegrationofplantingandbredingandgroundwaterleachingriskmitigation，vegetablefieldsin47 prefecture-levelcitiesinorthChinawereselectedasreseachobjects，andavegetablefieldnitrogenleachingmodelwasdevelopedusing supprtectormachinealgorithms toestimatethevegetablefeldbearingcapacityofanimalmanuretargetinggroundwaterleachingrisk mitigation.Ascenario-basedframewrk wasestablishedtosimulatevegetablefieldbearingcapacitycrossdfrentcitiesundervarying nitrogen leaching thresholds.Resultsshowed that the nitrogen leaching model exhibitedadetermination coeficient（ R2） of 0.72.Nitrogen leachinginvegetablefieldsinceasedwithgrowingapplicationsofiorganicfertlierandmanure.Regionalyiorganicertlir dominated in22cities; manurein2cities;andboth jointly in23cities.Under nitrogenleaching thresholdsof 11.3kg⋅hm-2 ，theestimated vegetablefieldbearingcapacityacros47citisinorthChinarangedfromOto34.5hadsperhctareexpresedinpigquivalent），41 exhibitedlowercapacitytantatbasedonegetableitrogendemandequirements，nitrogenleachngconstraiedpotentialforaure application and breeding development in north China.

Keywords：animal manure;bearing capacity; vegetable field; nitrogen; leaching

《第二次全国污染源普查公报》数据显示，2017年种植业总氮排放量为 7.2×105t ，占农业源排放总量的 51% ，是重要的污染物排放来源。（剩余27765字）