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411Vol.41,No.120142GEOLOGYINCHINAFeb.,2014(1)Se[111]0.1~2.0ng/kg0.2ng/kg72%[12]1118.91509.7mm2010125Se0.4mg/kg392km223.9%122010307201110121378530~20cm150~11211.3300302.710000Se0.34mg/kg100%SeSeSeSeSeCECNPSeSeSeSeNK2OP618.76A1000-3657(2014)01-0256-082013-03-272013-10-31J201102-23-211984E-mail343170393@qq.com(1)411257200cm150~200cm1/50cmSeAsCdCrHgpHSeAsCdCrHg1DD20053RD=|A1A2|/A1+A2×10085%3SeGB156181995Se2pHpH4.73~5.86[1315]Se0.34mg/kg0.17~0.79mg/kg1Fig.1Samplinglocationinthestudyarea1mg/kgTable1Analyticalmethodanddetectionlimitsofthesamples(mg/kg)pHmg/kg*2SeTable2ContentstatisticsofSeandsomeotherelementsinsurfacesoilanddeepsoil(1)2582014Se0.31mg/kgCrPbAsCdHgCr91.34mg/kg19.30~284.50mg/kgCr69.80mg/kgCrAsCdHgGB156181995pH6.5Hg0.30mg/kgCd0.30mg/kgPb250mg/kgAs30mg/kgCr250mg/kgAsCdCrHg1~2AsCdCrHgPb0.790.870.850.800.210.791SeSeTSe3ABC3ASe0.51mg/kg0.39~0.58mg/kg888.89%BSe0.40mg/kg0.30~0.50mg/kg1052.63%8CSe0.35mg/kg330.00%ASe0.60mg/kg1.93mg/kg0.48mg/kgBCSe0.06mg/kgSeSe2Se40~50cmSe3Semg/kgTable3Secontentofsurfacesoilinhorizontalsection(mg/kg)2SeFig.2DistributionoftotalSeinsoilsection(1)411259A45cm95cm140cmSe0.57mg/kg0.71mg/kg0.64mg/kg0.44mg/kg[1315]Se[2.9]ASeC4SeSeSeSeSeSeSeSe4Se0.02~0.10mg/kg0.05mg/kg13.72%Se0.10~0.13mg/kg0.11mg/kg26.99%Se2GB/T2249920080.04mg/kg861.54%7100.00%SeSeCrCr0.14mg/kg0.18mg/kgCdCd0.09mg/kgCd0.10mg/kgHgHg0.01mg/kgNY/T4192006GB27152005AsPbCdHg1NY/T10492006Cr5SeSeSeSeSe(Se6+)(Se4+)Se0.010~0.034mg/kgSe2.47%~6.05%[2123]SepHEhCEC[25]SeSe3~4SeSeCECNPpHSeSey=0.0414x+0.0025r0.72p=0.01n=20SeSeSeCEC(CEC)CECSeSeSe5[19][2024]Se80%Se4Semg/kgTable4ContentofSeandsomeotherelementsincrops(mg/kg)(1)2602014SeNSeSeSeSeSeSeSe[2123]Se[21]P[23]SeSePSeSeSeNK2O5SeSey=0.3841x+0.2994r0.63p=0.01n=13SeK2O1.74%2.79%Se10.72%18.51%SeSeSeSeSeSeSe4SeNPFig.4ScatterplotbetweenavailableSeandtotalN,Pinsurfacesoil3SeSeCECFig.3ScatterplotbetweenavailableSeandtotalSe,CECinsurfacesoil(1)41126161Se0.34mg/kgSeSeSeSe0.51mg/kgSe40~50cmSeSeSe2Se0.05mg/kg13.72%61.54%Se0.11mg/kg26.99%100%SeSe3SeSeSeSeSeCECNPSeSe5SeSeNK2OFig.5ScatterplotbetweenenrichmentfactorsofSeincropsandtotalSe,N,K2Oinsoil(1)2622014CECPSeSeNK2OSeSeReferences[1],,,.SeSeSe[J].,2002,11(4):388391.ZhangYanling,PanGenxing,LiZhengwen,etal.Translationofseleniuminthesystemofsoilplantanditsregulationinfoodchain[J].SoilandEnvironmentalSciences,2002,11(4):388391(inChinesewithEnglishabstract).[2],,,.Se[J].,2005,24(10):11971203.ZhaoShaohua,YuWantai,ZhangLu,etal.Biogeochemicalcyclingofselenium,nutritionadjustmentanddifferentiationcauseinenvironment[J].ChineseJournalofEcology,2005,24(10):11971203(inChinesewithEnglishabstract).[3],,,.[J].,2010,37(3):577581.WangYanliang,HouWei,HouZhanqing,etal.TherelationshipbetweentheKaschinBeckdiseaseandthegeologicalenvironmentinJilinProvince[J].GeologyinChina,2010,37(3):577581(inChinesewithEnglishabstract).[4],,,.[J].,2010,37(3):587593.AnYonghui,LiXufeng,HeJin,etal.DistributioncharacteristicsofKaschinBeckdiseaseinrelationtogeologicalenvironmentofZoigeCounty[J].GeologyinChina,2010,37(3):587593(inChinesewithEnglishabstract).[5],,,.[J].,2010,37(3):600606.XuMo,LiuGuo,ChenXu,etal.TraceelementanalysisofwaterenvironmentinKaschinBeckdiseasearea,ZamtangCounty,northwestSichuanplateau[J].GeologyinChina,2010,37(3):600606(inChinesewithEnglishabstract).[6].SeSe[J].,1993,12(3):237243.WangZijian.SomebiogeochemicalaspectsofseleniuminChineselowseleniumbelt[J].EnvironmentalChemistry,1993,12(3):237243(inChinesewithEnglishabstract).[7],,.SeSe[J].,1989,8(2):711.WangZijian,ZhaoLihua,PengAn.SeleniumevaporationfromsoilsofChineseSedefficientbelt[J].EnvironmentalChemistry,1989,8(2):711(inChinesewithEnglishabstract).[8],.[M].:,1990:231233.RongQiutao,WengHuanxin.Environmentalgeochemistry[M].Beijing:GeologicalPublishingHouse,1990:231233(inChinesewithEnglishabstract).[9],,.[J].,1982,2(3):241249.ZhengDaxian,LiRibang,WangWuyi.Apreliminaryexpositiononlowseleniumzoneintheworld[J].ActaScientiaeCircumstantian,1982,2(3):241249(inChinesewithEnglishabstract).[10].[M].:,1989.TanJianan.TheAtlasofEndemicDiseasesandTheirEnvironmentsinthePeople'sRepublicofChina[M].Beijing:Sciencepress,1989(inChinesewithEnglishabstract).[11].Se[J].,2000,22(4):6972.YiXiu.Seleniuminecologicalenvironmentandendemicdisease[J].JournalofXianEngineeringUniversity,2000,22(4):6972(inChinesewithEnglishabstract).[12],,.[J].,1995,32(2):186193.BoberAoseer,ZhangDongwei,LiuLi.Regionalenvironmentaldifferentiationandregionalsafetythresholdofsoilselenium[J].ActaPedologicaSinica,1995,32(2):186193(inChinesewithEnglishabstract).[13],.[J].,2006,13(1):105112.YangZhongfang,YuTao.AstudyofthecharacteristicsandmechanismsofsoilacidificationintheDongtingLakeregioninHunanProvince,SouthChina[J].EarthScienceFrontiers,2006,13(1):105112(inChinesewithEnglishabstract).[14],,,.[J].,2006,13(1):98104.YuTao,YangZhon