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《青铜峡灌区农业非点源污染控制措施及其效果分析.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、农业环境科学学报2010,29(增刊):141—144JournalofAgro-EnviromncntScience青铜峡灌区农业及其效果分析非点源污染控制措施李强坤1”,孙娟1,胡亚伟1,陈伟伟1(1.黄河水利科学研究院,郑州450003;2.水利部黄河泥沙重点实验室,郑州450003)摘要:农业非点源污染已成为当前影响水体环境质量的主要因子之一,对农业非点源污染控制措施的研究十分迫切和必要。青铜峡灌区农业非点源污染研究和相关监测试验表明,水分是当地农业非点源污染物产生和迁移的主要动力和载体,灌溉过程中应当加强田间
2、水分管理,实施节水灌溉和控制排水,为改善田间土壤养分结构,强调实行和推广田问测土配方施肥技术。农田排水沟渠在输送农田排水的同时具有人工湿地的生态功效,可以充分利用生态工程技术降解吸附农田排水中的污染物,避免污染外界水体。关键词:农业非点源污染;节水灌溉;控制排水;配方施肥;生态工程中图分类号:X522文献标识码:A文章编号:1672—2043(2010)增刊一0141—04ControlMeasuresofAgriculturalNon——pointSourcePollutioninQingtongxiaIrrigat
3、ionDistrictandEffectsAnalysisUQiang—kunl一,SUNJuanl,HUYa—weil。CHENWei—weil(1.YellowRiverInstituteofHydraulicResearch,YRCC,Zhengzhou450003,China;2.KeyLabemtoryoftheYellowRiverSedimentofMinistryofWaterResource,Zhengzhou450003,China)Abstract:Recently,alongwiththehig
4、hlightedwaterenvironmentalissuesandrelativelyimprovingcontrolstandardsofthepointsourcepollution,non—point80urcepollution(NSP),agriculturalnon—point80Ul℃epollutionproblemespeciallycausedbyheavyusechemicalfertilizersandpesticideshasarousedgreatconcernandattention.
5、Thus.theresearchoncontrolm嘲-uresofagriculturalnon—pointsourcepollutionhasbeenallextraordinarilyexigentproblem.Thispaper,takingtheQingtongxiaIrrigationDistrictattheYellowRiverupstreamasanexample,basedonthemonitorexperimentmaterialfromtheQingtongxiaIrrigationDistr
6、icttypicalexperimentalarea,accordingthedifferentmigrationcharacteristicsof“Sources”and“Sinks”links。differentcontrolmeasuresweroputforwardin“Sources”and“Sinks”links.Thereinto.“Sources”linkcontrolm鲫u瑚in-elude:savingirrigation,controlleddrainageinpaddyfieldandscien
7、tificfertilizationtechniqueetc;for“Sinks”links,theeco-logicalstructureandeachcomponentecologicalfunctionsofthedrainagesystemditchwetlandwerediscussed,themigrationtransformationmechanismindrainageditchessystemofnitrogenandphosphoruswereanalyzed.Atlast,thefeasibil
8、ityandfur-therresearchproblemsstillneededtoaboutdrainageDesouI℃eufifizationwereanalyzed.Keywords:agriculturalnon—point80ul℃epollution;savingirrigation;controlleddrain
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