不同肥水管理对水稻生理生态的影响

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1、ThetreatmentinthesubmergencedecreasetheapparentexportpercentageofstemandsheathaFortheapparentexportpercentageofleaf,differentfertilizationmanagementshavedifferentresponsestowater．Thenumberperspikeandtheseed-setrateweresignificantlyimprivedintheaerobic，thusitincreaseyieldby2．5％-10％．ric

2、enitrogenuptakeunderdifferentfertilizerandwatermanagementWascarriedout．TheresultshowedthattheorganicNfertilizerrateWashigher，thenitrogencontentofleaves，stemandsheathpeerplanthadhigher．whilethetotalnitrogenofstemandsheathWasopposite．Forthefertilizeruseefficiency,therateorganicfertilize

3、rwashigher,thenitrogenuseefficiencywaslower．WhentheratiooforganicNtochemicalNWas1：I，harvestindex，Nharvestindex,nitrogenpartialfactorproductivitywerethelargest．effectsofnitrogenfertilizeronbiomassaccumulationanddistributioninriceshowedthattheeffectofnitrogenapplicationamountonuplanddry

4、matterweightWasremarkable．Atfillingperiod，．Stemweightofricetookonafirstlyincreasingandseconddecreasingandthenincreasingchange，itimpiiednutrientcontentrepeatedaccumulatedinricestem．Therelativecontentsofdrymatterbytransferredtoshootswereinthelowestunderlownitrogentreatment．Withtheincrea

5、seofnitrogenrate，drymatteracceleratedsignificantly．Theincreaseofspikedryweightdependedonagreatextentonphotosynthesisatfillingstage．Nitrogenaccumulationinspikedependedonthenitrogenaccumulationofleaves，stemandsheatbeforeflowering，thenitrogenaccumulationofleavesduringfillingstageoccupied

6、verylittlepercentageofspikenitrogencontent．TranslocationofAssimilatesWasaffectedbypaniclefertilizer,andtheproportionpaniclefertilizerWashigher,theinhibitionWasstronger．ItimpliedthatitWastheimportantfactortOcontroltheamountsofspikefertilizerunderhighratesofNutiliZation．Keyword：nutrient

7、andwatermanagement；rice；Eh；drymatter；nitrogen；eco·physiologicalVIl独创性l声瞬西王人·器i明研呈交的论文是我个人在导师指导下送行÷j瞬究1作及取得8j研究战果。尽我}尹i知，除了文=中特别加以标注和致谢的地方夕i、?沦文f{二{刁：包含其他人已经发表或撰写．“!j_J～“,U一．”I“2L／‘-"．。Y．．7。,-(：也不皂含为获得中国农业科学院或其它教育机{：句的：爹位或汪书而使用过的材料。与我一恳工作的同志对本研究所做的任何贡献均已在论文中作了明确的说明并表示了谢意。研究生签名：梳兴星m-j-I

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