寒地玉米氮鉀調控及營養(yǎng)診斷技術的研究.pdf

1、東北農業(yè)大學碩士學位論文寒地玉米氮鉀調控及營養(yǎng)診斷技術的研究姓名：于亞利申請學位級別：碩士專業(yè)：農業(yè)資源與環(huán)境；植物營養(yǎng)學指導教師：姜佰文20110602東北農業(yè)大學農學碩士學位論文Luml!!皇曼皇!皇!曼毫璺曼苧皇皇皇!!皇曼!詈皇曼皇詈曼!!!鼉皇詈詈皇曼皇!鼉!!鼉!暑詈詈詈詈量詈詈詈葛StudyonNandKManagmentandNutritionDiagnosisTechniquesOfCornInColdRegionAb

2、stractInrecentyears，nitrogenfertilizersuppe卜potassiumscarcityresultedinofyieldincreasingeffectdroopandenvironmentalpollutionprobleminourcountrytomcapacity，especiallynorthcoldlytomcapacityThistextsystemlyanalysedonspringg

3、emnutrientaccumulation，transferlawyieldqualityandrecognizethatpotassiumandnitrogen’SbestdosageTheresultsareasfollows：1Nitrogenaccumulationofthecomstemleafperformancedforraisefirstbehindloweroftrendhitedmaximumattasseling

4、stage，NaccumulationhadpositivecorrelationwithyidldatO01significantlevelaftertasselingstage，andthebiggerNaccumulationandthehigherherbageyieldofmaizeNaccumulationperformancedfortheupVendinseedatwholetime，andNaccumulationof

5、A282(N150kghm吐K20100l(ghm吐)treatmentWasmaximumTheproperN／KcouldpromoteNinthenourishmentbodytotransporttotheseedsh嘰butnitrogenpotassiumshortageandthenourishmentbodyNtransshipmentabundancecouldsparknourishmentbodyprogeriaE

6、xcessofnitrogenpotassiumdosage，nourishmentbedynitrogenmetabolizedprosperous，nitrogenofseedreduced，theyieldwaslower2StemleafspotassiumaccumulationraisedfirstandthenlowedandhitedmaximumattasselingstageSeedshot’spotassiumac

7、cumulationWasslowmovingtaise，andtheoppositecontentsWaslowerwhichexplained，atyieldformingprocess，thatthepotassiumonlytookpartinseedmetabolismprocess，andthebigfractionmovedfromseedbehindpotassium’Sphysiologyfunctioncomplet

8、es，andhardlystoredintheseed3TheN，KcooperativenessandamountoffootwereadvantageoustogrowthoftheplantnourishmentbodyandthelifeoftheextensionfunctionleafandwereadvantageoustocomposephotosynthesisThetestingshowed：theA282(N150

9、khm。2K20100kghm七)treatmenthadhi曲estyield，N／KWas209，andindicatedhigherorlowerN／KweredisadvantageoustoformyieldTheyieldincreased嬲theamounttaxedincreasesatthesameN／KlevelthereasonableN／Kwantedtohitthebestyieldlevel，hadtoexc

10、hangetheeffectofN／Kcooperativenessbyfertilizerquantitativeincrease4TheplantdrymatterweightWaSuptrend，andthecaulisleafdrymatterdescendedafterraisedfirstatthewholetime，andtookouttasselingfillingstagetohitmaximumThedrymatte

11、rweightchangeofdifferentnitrogenpotassiumdosagehadadissimilaritytheA282(N150kghm嵋K20100kghm吐)treatmentexpressedagoodtrendDrymatterweightdidnotproperhigherorlowerandthelowerleadeddrymatterbacklogandtransferedtowardseedatl