施氮對棉花養(yǎng)分吸收規(guī)律及產(chǎn)量品質(zhì)影響的研究.pdf

1、新疆農(nóng)業(yè)大學(xué)碩士學(xué)位論文施氮對棉花養(yǎng)分吸收規(guī)律及產(chǎn)量品質(zhì)影響的研究姓名：趙雙印申請學(xué)位級(jí)別：碩士專業(yè)：作物栽培學(xué)與耕作學(xué)指導(dǎo)教師：徐文修20090601StudyonDifferentExecuteNitrogenLevelsonNutrientUptakeYieldandQualityofCottonAbstractTheexperimentstudyondifferentamountnitrogenfertilizereffects

2、plantnitrogen，phosphorusandpotassiumnutrientabsorptionaswellasexploredappropriatenitrogenapplicationratethenorthernofXinjianginordertoimproveusedefficiencyofnitrogen，establishtechnologyofe確cientNitrogenincottonprovidepra

3、cticalexperienceandscientificbasisofthenorthernofXinjiangStudieshaveshowedthatdrymatteraccumulationofcottonwereshortandslowinthegrowthofperhaps。itincreasedfastinthemediumtermandslowlyincreasedinthelafterItusedLogisticequ

4、ationtofitdrymatteraccumulationofdifferentnitrogen，thegreatestmomentofdrymatteraccumulationappearedaboutafter85d94dofplanting，Executedreasonablenitrogencarlreasonableextendedperiodofdrymatteraccumulationofthestrongperiod

5、itpromotedtheforillationofeconomicoutputofcottonExecutedreasonablenitrogencanincreasetheamountofnitrogen、phosphorus、andpotassiumuptakeandpromotenutrientsubstancesthatsynthesizedandoperatedinthebodyofcoRonintheentirerepro

6、ductiveprocessofcottonastrongperiodofabsorptionnitrogenonthesowingperiodafter54d114d，phosphorusafter57d112dpotassiumafter44d～89dIntheprocess，nitrogen，phosphorusandpotassiumofthestrongperiodaccumulationofN，processingisthe

7、longest，respectivelyupto56d、55d、43d，thanothersextended5d～l7d，2d一10d，2d～15d，itshowsthatappropriateexecutenitrogenpromotedstrongperiodtoextendofphosphorus、potassiumitprovidedessentialnutrientsforthehi【ghyieldingcottonStron

8、gperiodofaccumulationnitrogenofN2processinginthe54daftersowing，thegreatestmomentofnitrogenaccumulationinthe82daftersowingThereforethebestnitrogentopdressinginthe54dand82daftersowingperiodPlantnutrientaccumulationofnoor1e

9、ssnitrogenfertilizeralelowestwhilethe10weramountofnutrientaccumulationisnotconducivetotheformationofcottonproductionobtainedlintyieldwereonlyl06131kg／hm2128059kg／hm。；itexecutedhighernitrogentothecotton，thebodyOfplantcann

10、otgethigheraccumulationofnutrientstheamountofthenitrogenwas300kg／hm‘cansignificantlyimprovenutrientaccumulationintheplantingbodysothattheamountoftakingupnitrogenphosphorusandpotassiumwasthehighest，respectively3l970kg／hm2

11、，l8958kg／hm。and2l327kg／hm‘，andthehighestproductionwasl35540kg／hm。Sciencetodeterminetheeconomicnitrogenapplicationratewas32046kg／hm‘inCottonfieldsExecutingnitrogenimprovethequalityofcottonfiber，whichfiberlength，uniformi夠，

12、strengthandspinabilitywereincreased。toacertainextent，itreduced，thefiberlengthandtheuniformitywassignificantlyhigherbetweenthetreatments，especiallyN2、N5existedmoresignificantdifferencethanothersOrlittereffectedonmaturitym

13、icronairvalueshortfiberindexTheresultsshowedthatnitrogenincreasedefficientofcottonspinningExcitingnitrogenwillbeimprovefiberqualityofcottonTheagriculturee銜ciencyofthelowestexecutednitrogenof150kg／hm‘was146kg／kgthatitwash

14、ighestItenhancedeconomicoutputTheapparentutilizationandthepartialproductivityofmoderatelyexecutednitrogenishighestTheywere1123％、854kg／kg，itenhanceabsorptionofnitrogenTheagriculturalef兩ciencyofnitrogen。theapparentutilizat

15、ionandthepartialproductivityoffarmersexecutednitrogenwaslowestthanmoderateexecutednitrogenbuttheamountofnitrogenwas2078kg／hm‘morethanmoderatelyexecutednitrogen1ntheaspectofprofitthe1intyieldofthemoderatelyexecutednitroge

16、nof300kg／hm2wasl854kgham2itwasmorethanconventionalfertilization，itwasmorethanconventionalfertilizationItincreasedprofitof260763yuan／hm‘SoappropriateexecutednitrogenmaybereducecostreceiveahigherincomeKeywords：cotton；dryma