浙江茶叶农药残留与生态茶园的研究-环境工程专业论文.docx

浙江大学硕士学位论文AbstractChinaranksfirst illoutputofgreenteaintheworld，andZhejiangisoneofthe majorgreenteaproducingprovinceswhoseaverageoutputis100，000tonsperyear，whichismorethan33．3％ofthetotaloutput．However,theproblemofpesticidehangoveris seriousinthegreenteaproduction．Theconstructionofecologicalteaplantationsissignificanttoimprovetheteaquality．Ecologicalteaplantationissuchateaplantationthatisecologicallyandorganicallysimulativetothenaturalecosystem．Theconstructionofecologicalteaplantationscanmakea900dbalancebetweentheteaeconomyandenvironmentprotection，andbetweenthehighproductionandteasafety．ThesituationandproblemofZhejiangecologicalteaplantationsaleinvestigatedandtheimpactofpesticideresiduesisanalyzed．Accordingtotheinformationfromtea exportto EUandJapanandthepesticideapplicationinZhejiang，1421teasamplesweretakenfromthefourmainteaareastodetectthepesticideresiduesfrom2004to2006哪ofEUorJapanWasregardedasthecriteria)．Thedetectionrateofpesticideresiduesintheseplantationsis44．62％，amongwhichtheunqualifiedrateis20．27％．Themaindetectionpesticidesaredicofol，es-fenvalerate,fenvalerateandcypermethrin，andthemainunqualifiedteaWaSresultedfromresiduesofes—fenvalerateandfenvalerate．Thedetectionrateofpesticideresiduesandtheunqualifiedrate ofgreenteaare43．48％and19．90％：thedetectionrateofpesticideresiduesandtheunqualifiedrateofscentedteaare80．39％and33．33％：thedetectionrateofpesticideresiduesandtheunqualifiedrateofblackteaare23．08％and7．69％．Thepesticideresiduesofthescentedtearankfirst，thatofthegreentearanksecond,andtheblackteaisrelatively goodin quality．The detectionrateofpesticideresiduesandtheunqualifiedrate inthefourteaareasofZhejiangare45．26％and18．83％inthenorthwest，54．81％and35．57％intheeast，24．20％and3．82％inthesouth，41．12％and11．05％inthemiddle．Thesituationofpesticideresiduesinsouthernteaareaisrelativelygood，thatiIlthenorthwest，eastandmiddleteaareasisnotSOgood，4浙江大学硕士学位论文andthatinnorthwestandeastteaareas1sevenbad．ThedetectionrateandunqualifiedratealerelativelyconstantinZhejiangteaplantationsfrom2