“新大豆1號”種植密度對群體結(jié)構(gòu)指標(biāo)影響的研究.pdf

1、中國農(nóng)業(yè)大學(xué)碩士學(xué)位論文“新大豆1號”種植密度對群體結(jié)構(gòu)指標(biāo)影響的研究姓名：李生秀申請學(xué)位級別：碩士專業(yè)：農(nóng)業(yè)推廣種植業(yè)指導(dǎo)教師：高振江魏建軍20061101AbstractInNorthofXinJiang，undertheconditionofthreeseedingrates。using“Xindadou1hao“asexperimentmaterial，therelationshipbetweentype，canopyst兀lc

2、tureandgrainproductionwasstudiedin2006Theprimaryconclusionsweresummarizedasfollows：TheanalysesofvariantsshowedthattheplantheightWasa療bctedlittlebytheseedingratesintherangeof210thousandperhectareto330thousandperhectareThe

3、nodenumberofmainstemwillbereducedwithincreasedoftheseedingratesThenumberofbranchesWasdifferentintheconditionofdifferentseedingratesTheabilityispoortoadjustthepopulationthroughthechangeofthenumberofbranchesTheproperseedra

4、tewasveryimportanttoachievethehigherseedyieldbyincreasingtheseedingratesTheresultsofstudiesinseedyieldsunderdifferentseedingratesindicatedthattheproductiveabilityofthenumberofpodeveryhectarewasstablealthoughtheseedingrat

5、escouldaffectthenumberofpodsinsingleplantmoreSothesuitbledensityWascontrolledbyplantforhigeryieldTheanalysesofcorrelationbetweenplanttypecharactersandproductionsshowedthattherewasnegativecorrelationbetweentheplantheighta

6、ndthenumberofpodseveryhectareThecorrelationbetweenstemthicknessandthenodenumberofmainstemWaspositiveaswellasbetweenthepodesnumberandthemassTherewassignificantpositivecorrelationbetweengrainproductionandpodsnumbereveryhec

7、tareandtheresultbetweenthepodsnumberinsingleplantandmassWaSsimilarTheresultsshowedthatthemasswasthebaseOngainmorepodsinsingleplantwhichWasvitaltothehi曲seedyieldKeywords：soybeanxindadoulhao，seedingrates，typecharacterofpla