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1、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)DifferenceinGrowthDurationandUtilizationofTemperatureandSolarRadiationBetweenindicaandjaponicaSuperRiceintheLowerYangtzea
2、ndHuaiheRiverValleyGONGJinＧlong,XINGZhiＧpeng,HUYaＧjie,ZHANGHongＧcheng∗,DAIQiＧgen,HUOZhongＧyang,XUKe,WEIHaiＧyan,GAOHui(InnovationCenterofRiceCultivationTechnologyintheYangtzeRiverValley,MinistryofAgriculture/KeyLaboratoryofCropGeneticsandPhysiologyofJiangsuProvinc
3、e,YangzhouUniversity,Yangzhou２２５００９,China;∗Correspondingauthor,EＧmail:hczhang＠yzu．edu．cn)GONGJinlong,XINGZhipeng,HUYajie,etal．DifferenceingrowthdurationandutilizationoftemperatureandsolarradiationbetweenindicaandjaponicasuperriceinthelowerYangtzeandHuaiheRiverVal
4、ley．ChinJRiceSci,２０１４,２８(３):２６７Ｇ２７６．Abstract:Inordertorevealthedifferenceingrowthdurationandutilizationoftemperatureandsolarradiationbetweenindicaandjaponicasuperrice,afieldexperimentwasconductedwithfivemainrepresentativesuperhybridindicacombinationsandfiveconven
5、tionaljaponicasuperricevarietiesasmaterialsinthericeＧwheatcroppingareas．Themaingrowthstages,drymatteraccumulation,effectiveaccumulatedtemperature,productionefficiencyoftemperature,photosyntheticallyactiveradiationandsolarenergyutilizationwereanalyzedsystematicall
6、y．Resultsshowedthat,thegrowthprocessesofjaponicariceinthefieldwerelaterthanindicarice,１６．２dayslaterforricematurityandharvesttime．Grainfillingstageofjaponicaricewassignificantlylongerthanthatofindicarice,withanincreasingrateof２５�８２％．Comparedwithindicarice,japonica
7、ricehadstrongadaptabilitytolowtemperature,whichwasbeneficialforprolongingheadingandgrainfillingappropriately,lengtheninggrainfillingandgrowthduration,andincreasingtheutilizationoftemperatureandsolarradiationinlateautumn．Japonicaricehadsignificantlyhighergrainyiel
8、d,biologicalyield,grainyieldperday,andgrowthduration,effectiveaccumulatedtemperature,photosyntheticallyactiveradiationandsolarenergyutilizationofthewholegrowth
