江淮下游地区籼粳超级稻生育期与温光资源利用特征的差异研究龚金龙邢志鹏胡雅杰张洪程戴其根霍中洋许轲魏海燕高辉∗(扬州大学农业部长江流域稻作技术创新中心/江苏省作物遗传生理重点实验室,江苏扬州２２５００９;∗通讯联系人,EＧmail:hczhang＠yzu．edu．cn)DifferenceinGrowthDurationandUtilizationofTemperatureandSolarRadiationBetweenindicaandjaponicaSuperRiceintheLowerYangtzeandHuaiheRiverValleyGONG激nＧlong,XINGZhiＧpeng,HUYaＧ激e,ZHANGHongＧcheng,DAIQi∗Ｇgen,HUOZhongＧyang,XUKe,WEIHaiＧyan,GAOHui(InnovationCenterofRiceCultivationTechnologyintheYangtzeRiverValley,MinistryofAgriculture/KeyLaboratoryofCropGeneticsandPhysiologyof激angsuProvince,YangzhouUniversity,Yangzhou２２５００９,China;Correspondingauthor,E∗Ｇmail:hczhang＠yzu．edu．cn)GONG激nlong,XINGZhipeng,HUYa激e,etal．DifferenceingrowthdurationandutilizationoftemperatureandsolarradiationbetweenindicaandjaponicasuperriceinthelowerYangtzeandHuaiheRiverValley．ChinJRiceSci,２０１４,２８(３):２６７Ｇ２７６．Abstract:Inordertorevealthedifferenceingrowthdurationandutilizationoftemperatureandsolarradiationbetweenindicaandjaponicasuperrice,afieldexperimentwasconductedwithfivemainrepresentativesuperhybridindicacombinationsandfiveconventionaljaponicasuperricevarietiesasmaterialsinthericeＧwheatcroppingareas．Themaingrowthstages,drymatteraccumulation,effectiveaccumulatedtemperature,productionefficiencyoftemperature,photosyntheticallyactiveradiationandsolarenergyutilizationwereanalyzedsystematically．Resultsshowedthat,thegrowthprocessesofjaponicariceinthefieldwerelaterthanindicarice,１６．２dayslaterforricematurityandharvesttime．Grainfillingstageofjaponicaricewassignificantlylongerthanthatofindicarice,withanincreasingrateof２５８２％．Comparedwithindicarice,japonicaricehadstrongadaptabilitytolowtemperature,whichwasbeneficialforprolongingheadingandgrainfillingappropriately,lengtheninggrainfillingandgrowthduration,andincreasingtheutilizationoftemperatureandsolarradiationinlateautumn．Japonicaricehadsignificantlyhighergrainyield,biologicalyield,grainyieldperday,andgrowthduration,effectiveaccumulatedtemperature,photosyntheticallyactiveradiationandsolarenergyutilizationofthewholegrowthduration,andNo．ofdays,effectiveaccumulatedtemperatureandphotosyntheticallyactiveradiationofthemajorgrowthduration,andproductionefficiencyoftemperaturefromheadingtomaturity,anddrymatteraccumulationandsolarenergyutilizationfromjointingtomaturity,whilegrainfillingrateandproductionefficiencyoftemperatureofthecriticalperiodfromsowingtoheadingandthewholegrowthstages,anddrymatteraccumulationandsolarenergyutilizationfromsowingtojointingfollowedanoppositetendencyaccordingly．Correlationanalysisshowedthat,grainyieldofricewasfoundtobesignificantlypositivelyassociatedwithgrowthduration,grainyieldperdayandgrainfillingstage,whilesignificantlynegativelyrelatedtograinfillingrate．Moreover,biologicalyieldwashighlysignificantlycorrelatedwitheffectiveaccumulatedtemperature,photosyntheticallyactiveradiationandsolarenergyutilizationofthewholegrowthduration．Howevertherewasainsignificantlynegativecorrelationbetweenbiologicalyieldandproductionefficiencyoftemperatureofthewholegrowthduration．Therefore,basedonstabilizingandraisingtheutilizationoftemperatureandsolarradiation,grainyieldperdayandgrainfillingrate,theincrementofeffectiveaccumulatedtemperatureandphotosynthetically...