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ID:32229503
大小:1.56 MB
页数:52页
时间:2019-02-01
《喷施微肥对夏玉米结实能力的影响的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、StudiesonSummerMaizeKernelSettingCapacityatDifferentMieroelementFei'ti[izerT心atmentsPostgraduate:Jia.gYaliM面ECropCultivationandFarmingSystemSupervisoE.2五angFeng-lu(professor)Abs仃act11圮morphologyandphysiologicalcharacteristicsofkerneldevelopment,kernelsettingcapacityatdifferentanthesis-silkingi
2、nterval(ASl)andtheeffectofmicroelementfertilizers(zinc,manganese,boron,)ORSUalllllermaizegrowthanddevelopmentkernelsettingrateWCl'econductedusingnongdal08asexperimentalmaterial.11”resultswouldhelptoprovidekeyfactoraffecting$1mnllermaizegrowthanddevelopment,andeffectsonkernelsettingcapa嘶bydiffe
3、rentmicroelementfertilizers.n伦resultswereshowed弱follows:1.ThemostrapidmatteraccumulationWaSappearedal12to28dayafteranthesis(DAA)duringthekerneldevelopment.AndthisperiodWaSalsoakeypenoafordrymatteraccumulationandyieldformation.Duringthekernelsettingpenedtheyallshowedafastincreasingtrendonkernel
4、ovarysize9freshweight,dryweightandvolume.AndthereWaSasignificantpositivecorrelationbetwc∞kernelweightandvolume.Changesofkerneldevelopment缸differentearpositionswerealsocheckedanditshowedthatmiddlekernelsworebetterthanupperkernelsonlengthofovary,fleshanddryweight,andvolume.Thatalsomoal岱thekernel
5、sinkstressandsinkactivityofmiddlekernelsw讹betterthantheupperones.Thatmaybeareasonofupperkernelshadahighabortedrate.2.Tbecontentsofsolublesugar,proteinandstarchofthekernelandcobwerecompared.Theresultindicatedthattherewereasimilartrendbetweenkernelandcobwithin12dayafteranthesis(DAA).After12DAAth
6、estarchcontentincreasedrapidlyinthekernel.however,itWasrelativelydecreasedinthecob.111econtentofsolublesugarkepthi曲inthekernel,butdecreasedrapidlyinthecob.Duringthewholekerneldevelopment,theproteincontentofthekernelwashigherthanthatofthecob.Itwasestimatedthatthesolublesugarofcobwastransportedt
7、okernelandconvertedtostarchorproteinafterthe12DAA.3.1hccontentofsolublesugar,proteinandstarchofthekernelandcobindifferentpartsofthe啊haddifferentchangingh'ends.but12DAAisakeydayofthephysiologycharacteristics,allofthethreeindexeshadchange
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