污水灌溉對作物和土壤的影響研究.pdf

1、分類號：墨至2：壘UDC：魚圣圣密級：壘玨級一一學(xué)校代碼：10712研究生學(xué)號：SY20040628西蛙農(nóng)林針捉大學(xué)2007屆攻讀碩士學(xué)位研究生學(xué)位(畢業(yè))論文污水灌溉對作物和土壤的影響研究學(xué)科專業(yè)農(nóng)業(yè)水土工程研究方向節(jié)水灌溉理論與新技術(shù)研究生鐘凌指導(dǎo)教師蔡煥杰教授完成時間2007年6月中國陜西楊凌SE黝GEIRRIGATIONONCROPANDSOILABSTRACTInrecentyears，boththeshortageandth

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5、metalinsidecropsshowsthatthenumberinnerspringwheatale嬲following，PbCrwhilethenumberislargestinrootBesidesthatthereismuchmoreheavymetalinthepartsofflowerleafandrootthaninthestemandseedAfterIrrigation(heavymetalcontentsarel

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8、irrigationinitialstagetransfusioneffectplaysmainroleforsoilmiddleCuionconcentrationdistribution，theCuionishitbythepromptirradiationwithsoiltransfusioninsoil；Later，thetransfusioneffectarenotalreadynotable，distributionofCu