优质籼稻花后干物质积累与流转及籽粒灌浆特征.pdf

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1、南方农业学报2011，42(1)：16-21JournalofSouthernAgriculturePost-anthesisaccumulationandremobilizationofdrymatterand2ralngrowthcharacteristicsinllighqualityJndlcarice1●。o·一‘●’-’’‘·‘。‘●HUJun—ruin91．一，JIANGLi-gen92‘，XUShi-hongz，HANGHe2，DONGDeng-fen92(1AgriculturalScienceandTechnologyInformationResearchInstitu

2、te，GumcxiAcademyofAgriculturalSciences，Nanning530007．China；2KeyLaboratoryofCropCultivationandFanningSystem，GuangxiUniversity，Nanning530005，China；3GuangxiGeneralStationofAgriculturalTechnologyService，Nanning530022．China)Abstract：【Objective]Fieldexperimentswereconductedtoinvestigatethepost-anthesisa

3、ccumulationandremobiliza-tionofdrymatterandgrain铲uWthcharacteristicsinhiIghqualityindicarice．【Method]Threeindicaricevarieties，v／z．，Baguixiang，GuihuazhanandZhengui’ai(CK)wereusedinfieldexperimentsduringtheearlyandlatecroppingseasonsin2007．【Results]High-qualityricevarietiesBaguixiangandGuihuazhansho

4、wedhigherdryweightofleafandsteminsingleshoot，a8wellashigherdrymattertranslocationratioandrotesinleafafterheadingstage．Littledifferencewagobservedindrymatterremobilizationinstembetweenthehigh-qualityriceandthecontmlafterheading．Drymatteraccumulationing饱insofthreericecuhivarswerosimulatedusingRichar

5、dequation，high--qualityricerevealedearlystartininitialfilling，longerperiodofactivetillingandlowermaximumfillingrate．About1／5d'-113“pm'tofdrymatteringrainwasfoundtocomeafterremobilizationofdrymatterfromleafandstemafterheading．【ConclusionlThedataindicatedthatgraingrowthwagcorrelatedwithdrymatterredi

6、stributioninleaf．ItcanbeconcludedthathigherdrymatteraccumulationinleafanditsremobilizationwagoneofthemostimportantphysiologicalreBsonsforimpartinghighqualityinrice．Keywords：high-qualityindicaflee；drymatter；,accumulation；remobilization；graingrowth；酽ainfillingCLCnulnher：$511．01Documentcode：AArticle：

7、2095—119l(2011)01卸1016—06优质籼稻花后干物质积累与流转及籽粒灌浆特征胡钧铭1．2，江立庚"，徐世宏3，梁和2，董登峰2(1广西农业科学院农业科技信息研究所．南宁530007；2广西大学作物栽培与耕作学重点开放实验室。南宁530005；3广西农业技术推广总站，南宁5300022)摘要：【目的】研究优质籼稻花后干物质积累、流转与籽粒生长的动态特征及相互关系。【方法】2007年早晚季，进行桂华占、八桂香