寒地玉米氮素調(diào)控及營(yíng)養(yǎng)診斷技術(shù)的研究.pdf

1、東北農(nóng)業(yè)大學(xué)碩士學(xué)位論文寒地玉米氮素調(diào)控及營(yíng)養(yǎng)診斷技術(shù)的研究姓名：王立娟申請(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：姜佰文20080620AbstractlJIIStudyonNManagementandNutritionDiagnosisTechniquesofCorninColdRegionAbstractFormaizeproductioninChinainrecentyears，especiallyinthenorthernwi

2、ntermaizeyieldincrementduetoexcessiveuseofnitrogenfertilizerproductioncausedbytheeffectsofnitrogenfertilizer，decreasingnitrogenuseefficiencyandsevereenvironmentpollution，etcAmingatthoseproblems，fieldtrialsappliedtothetes

3、tmethodsofrandomizedblockexperimentinbaseofoperationsinNortheastAgriculturalUniversityDonguanVillageinShuangchengCityTestedfortheblacksoil，thetwovarietiesofcoin，F(xiàn)enghe—l，Xinxin一808，wemadesystematicanalysisonSPADofcomleav

4、es，nitrogenabsorptioncharacteristicsanddrymatteraccumulationfrombothofnitrogenamountandnitrogentime1、ThebestfertilizertimeoftwovarietiesofcornfromtheSPADvalueistenleafagestageandthebestfertilizationamountis150kg／hm2ButSP

5、ADthresholdisdifferentwhichSPADthresholdofFenghelis61~62andthatofXinxin808is53～552、Studyingonthetwovarietiesofcornstems，leaves，seedsaccumulatedNitrogen，wethoughtexcessivenitrogenpresentinthestemsandleavesduringeightandfo

6、urteenleafagestage，andthatisneitherhelpfultotheaccumulationofnitrogeninthegrain，norhighyieldFromtwovarieties，themostbeneficialtransferfromnitrogentothegrainisin7treatment3、NitrogenisbeneficialtodrymaReraccumulationofthew

7、holecorn，andthemoreaccumulatedgraineventuallythehigherutilizationrateofnitrogeninthistreatmentThehighestdrymatteraccumulationofeachorganintwocornvarietiesisin5treatmentwhichismostcontributiontotheformationofhigh—yield4、N

8、itrogenamountandnitrogentimedidlittleeffectonhectograinweight，butgreaterimpactoncornyield，andtheanalysisofvarianceissignificantthatFvalueofFenghe—lis9849，andXinxin一808is18470111ehighestproductionvaluesarein5treatmentwhic

9、hnitrogencontentis150kg／hm2Themostobviouseffectsoffertilizerisintenleafagestage，whichcansignificantlyincreasecomyield5、Theimpactonthecontentofproteins，fatandstarchWasnotobviouslybetweenthedifferenttreatmentsofnitrogen，an

10、danalysisofvarianceWasnotsignificantThecontentofproteinsandfatinbachtreatmenthadsignificantcorrelationwiththatofcomparedtreatment，butnotsignificantinstarchcontentIntotal，nitrogendidlittleeffectonthecontentofstarchKeyword