模擬條件下石灰性土壤上間作小麥對(duì)花生鐵營(yíng)養(yǎng)的改善作用.pdf

1、中國(guó)農(nóng)業(yè)大學(xué)碩士學(xué)位論文模擬條件下石灰性土壤上間作小麥對(duì)花生鐵營(yíng)養(yǎng)的改善作用姓名：郭桂英申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：植物營(yíng)養(yǎng)學(xué)指導(dǎo)教師：江榮風(fēng)申建波20040101Abstract’l糖eerhizoboxeswhichwereassociatedwithsandsoilsoilsolutionandsoilsandsolutionjointedcultureexperimentweredesignedtostudytheeffectsof

2、theintercroppingofwheatwithpeanutplantsincalcareoussoilonimprovingtheironnutritionofpeanut翟∞concentrationofDTPAFepHvalueandEhvalueintherhizosphereofpeanutweredeterminedtoindicateeffectofintereroppingofwheatwithpeanutonir

3、onnutritionandrhizospheredynamicsofpeanutplants。ItwassuggestedthatthesoilsandsolutiondesignprovidedefficientmethodandevidenceinstudyinghowwheatimprovetheironnutritionofpeanutinintercroppingThemajorfindingswgffesummarized

4、asfollows：Inthroeexperiments，soilsand—solutioniointedcultureexperimentwasthemosteffectivetoanalyzepreciselyrhizosphereeffectofpeanmthroughslicingsoilsamplefromrootsurfaceofpeanuttobulksoil，andeventothesickofwheatThisdesi

5、gnovercometheweaknessthatsandsoiljointedcultureexperimentdidnotbepsoilmoistureconsistentbetweenthetwocompartmentswithdifferentmediumsandsoilsolutionjointedcultureexperimentdisturbedthegrowthofwheatrootsTheresultsfromthre

6、erhizo—boxexperimentsshowedthaiFedeficiencychlorosisofpeanutinmonocroppingsystemappearedmoresevereoncalcareoussoil，speciallyinthesoiladdedwitht0％CaC03Howeverafterintercroppingwithwheat，activeironandchlorophyllconcentrati

7、oninnewleavesofpeanutandDTPAextractableFeconcentrationandpHandEhvalueinrhizosphere—peanutsoilwereremarkablyhigherthanthoseinmonocroppingsystemRootsofpeanutandwheatintherhizo—boxexperimentsweretotallyseparatedbynylonnet，s

8、uggestedthatwheatmightincreaseironnutritionofpeanutbyphytosiderophoresexcretionwhichcouldmobdizeinsolubleironinsoilosupplyextractableironforpeanutgrowingProtoninrootsofpeanutandreducingFe’capacityinmtercroppingsystemwere