氮肥用量和插秧密度对寒地粳稻蛋白质与稻米品质的影响

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1、万方数据东北农业大学农学硕士学位论文胶稠度基本随氮肥用量的变大而减小，随插秧密度变大而变大；营养品质基本均随氮肥用量的变大而变大，同一氮肥水平下，蛋白质含量随插秧密度的变大而减小。关键词寒地粳稻；氮肥用量；插秧密度；氮代谢关键酶；蛋白质含量：稻米品质；产量II万方数据AbstractEffectofNitrogenApplicationandTransplantingDensityonProteinContentandRiceQualityinColdJaponicaRiceisseenasthemainfoodcropintheworld，andresonn

2、ablyapplyingnitrogenfertilizerandestablishingthegroupstructurewillbethemostimportantfoundationofhigh。yieldingrice。Inthispaper，threejaponicacultivarsMudanjian930、Dongnon9426andSongjingl4werefield。grownasmaterials，andfourdealingmethodsofnitrogenousfertilizer(withnonitrogen，fertilizing

3、75kg，150kg，225kgpurenitrogenineachhectarefield)，andthreeplantingdensitytreatment(D1：30cmxl6．6cm、D2：30cmxl3．3cm、D3：30cmxl0．0cm)．TodiscussthekindsofactivitiesforNR，GSandTransaminase(GOTandGPT)indifferentnitrogenapplicationandtransplantingdensityofriceandalsodiscussedtheeffectofnitroge

4、nabsorptionandutilization，theproteinaccumulationandformation，yieldandqualityofriceindifferentnitrogenapplicationandtransplantingdensity，afterwardsitmadecleartheregulationmechanismofnitrogenmetabolismontheapplicationofnitrogenandtransplantingdensityincoldjaponicarice，aimedtoprovideth

5、eoreticfoundationandtechnicalsupportforjaponicaricescientificandrationalapplyingnitrogenfertilizerandestablishagroupstructure．Thefollowingarethemainresultsconcludedfromtheexperiment：1．TheamountofnitrogeninthewholeplantgetlowerandlowerastheplantgrowsinMudanjian930、Dongnon9426、andSong

6、jingl4．Threevarietiesofplantnitrogenuptakeinearlygrowthstagewaslittle，thenincreasedtoaslightdegreewiththejointingstage，andthenrapidlyincreasedafterheading，andgottothehighestlevelwhenitismature．Mudanjian930’SplantnitrogenratioandnitrogenuptakeofN3D2werethehighest，Dongnon9426andSongji

7、ngl4’SplantnitrogenratioandnitrogenuptakeofN3D3werethehighest．Threevarietieshadamorebalancedsourceofnitrogeningrain．2．Mudanjian930andSongjin914’SnitrogenabsorptionefficiencywithN2D3wasatthehighestlevel，whileDongnon9426’SnitrogenabsorptionefficiencywithN3D2wasatthehighestlevel．Threes

8、ortsofnitrogenphysi