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1、農(nóng)業(yè)環(huán)境科學(xué)學(xué)報2010，29(4)：674—679JournalofAgro—EnvironmentScience滇池流域農(nóng)田土壤有機(jī)氯農(nóng)藥殘留特征尹可鎖1，一，吳文偉2，張雪燕2，郭志祥2，代雪芳2，何成興2，徐漢虹1(1．華南農(nóng)業(yè)大學(xué)天然農(nóng)藥與化學(xué)生物學(xué)教育部重點(diǎn)實(shí)驗(yàn)室，廣州510642；2．云南省農(nóng)業(yè)科學(xué)院農(nóng)業(yè)環(huán)境資源研究所，昆明650205)摘要：在滇池流域農(nóng)田，重點(diǎn)是滇池濱湖區(qū)和人滇河流柴河流域，選擇不同土地利用類型、不同種植年限大棚采集土壤樣品進(jìn)行氣相色譜(ECD)分析。結(jié)果表明，試區(qū)土壤中
2、有機(jī)氯農(nóng)藥(OCP。)檢出率為95．9％，OCPs的殘留量范圍、平均值分別為nd～63．4肛g·kg、6．3txg·kg，以p，P’一DDE為主要?dú)埩粑铮?8．3％的樣點(diǎn)達(dá)到國家《土壤環(huán)境質(zhì)量標(biāo)準(zhǔn)》一級標(biāo)準(zhǔn)(<50肛g·kg。1)。與國內(nèi)同類報道相比，滇池周邊土壤中OCP。的殘留較低。不同土地利用類型有機(jī)氯殘留量排序?yàn)椋涸O(shè)施栽培>水稻田>露天菜地>荒草地>坡耕地；不同大棚種植年限土壤中，棚齡長于15a的OCP。殘留量要明顯高于棚齡短于15a的，而棚齡短于15a的，土壤中OCP。含量差異不明顯。關(guān)鍵詞：土壤
3、；有機(jī)氯農(nóng)藥；殘留中圖分類號：X592文獻(xiàn)標(biāo)志碼：A文章編號：1672—2043(2010)04—0674—06ResiduesCharacteristicsofOrganochlorinePesticidesintheCultivatedSoilsfromDianchiLakeWatershedYINKe-su01一，WUWen-wei2，ZHANGXue-yan2，GUOZhi-xian92,DAIXue-fan92，HECheng-xin92，XUHan-hon91(1．KeyLaboratol7o
4、fNaturalPesticideandChemicalBiology，MinistryofEducation，SouthChinaAgriculturalUniversity，Guangzhou510642，China；2．InstituteofAgriculturalEnvironmentandResource，YAAS，Kunming650205，China)Abstract：Surfacesoils(0～20cmdepth)oftypicalcultivatedfieldwerecollected
5、inDianchiLakewatershed(especiallyDianchiLakesideandChaiheRiverwatershed)，andorganochlorinepesticideresidues(OCPs)，representedwithDDTsandHCHs，wereanalyzedbygaschromatographywithECDdetector．TheresultsshowedthatOCPsrangedfromnoneto63．4斗g‘kgweredetectedin95．9
6、％ofthesoilsamples，andtheaveragelevelwas6．3斗g·kg～．Thep，p7-DDEwasthemainOCPscomponent，whichindicatedthattheresiduesinsoilswerepossiblyresultedfromhistoricaluseofOCPs．neconcentrationsofDDTsandHCHsin98．3％ofsampleswerelowerthan50txg。kg，whichshowedthatthesesoil
7、shadreachedthefirstleveloftheNationalSoilEnvironmentQualityStandard．TheeffectofsoilutilizationandhistmTofgreenhousecultivationonthelevelofpesticideresiduesinsoilswerealsodiscussed．Theamountofpesticideresiduesaccordingtodifferentlanduseinorderwasshownasfol
8、lows：greenhousesoil>paddysoil>openvegetablesoil>grasslandsoil>slopinglandsoil．Thecon—centrationsofOCPsinsoilsampleswithmorethan15yeamcultivatedhistmTwerehigher，whilethedifferenceofOCPsresiduesamountwasnotsignificant
