山西省小麦种植体系活性氮排放及碳足迹对化肥施用的响应

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The ResponseofActive Nitrogen Emisionsand CarbonFootprintof WheatPlantingSystem inShanxi ProvincetoFertilizerpplication

LI Hui，DAI Xin-jun（Department of Biology，Xinzhou Teachers University，Xinzhou，Shanxi 034000）

AbstractThisudytaksteheatproductionssteminSaniProvincasteobectcaluatestecarbonandnitrogeemisiosatedbytheatsiintlifessteoddrtaiaielystoactf fetilzerapplicationinwheatproduction.Theresultsshowedthatfrom2O11to2O21，thewheatplantingareainShanxidecreasedby 24.41% ， but the wheat yield per hectare increased by 33.99% . In Shanxi Province，the input of various types of fertilizers for wheat has increased by （20 18.55% overthepast1lyeas，ndhetypeoffertilizerhsgaduallyshftedfromnirogenfertilizertocompoudfertilizer.Comparedwith 2011，the amount of nitrogen fertilizer used in 2O21 decreased by 44.11% ，while the amount of compound fertilizer used increased by （202 168.90% .The active nitrogen emissions from the wheat production system in Shanxi Province are mainly from NH3 volatilization，with an average NH3 volatilization of 53.34kg/hm2 NO3- -N leaching of 4.33kg/hm2 ，and N2O emissions of 0.40kg/hm2 In addition，in2011-2021，the carbonfotprtofofeatprudinaroveutrtilutsodorallowrdredndl vironmentalcostagdlydudefoedertofrtrdcebodrnfoptitisosibletpl uilizatioandduerbndrogsiosduringatliatiobeveloingtoiestducemmlaile veloping slow-release fertilizers，and combining soil testing formula technology.

Key wordsWheat;Fertilizer input;Life cycle assessment method;Active nitrogen emissions;Carbon footprint

长期以来，化肥通过显著提高小麦产量，为我国的粮食安全发挥着不可替代的作用[1]。（剩余6586字）