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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