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1、中國水稻科學(xué)(ChinJRiceSci),２０１６,３０(５):５０７－５２４http://www．ricesci．cnDOI:１０．１６８１９/j．１００１Ｇ７２１６．２０１６．６０１２５０７不同播栽方式下雜交秈稻莖稈生長和穗粒形成特點(diǎn)及與氣象因子的關(guān)系田青蘭１劉波１孫紅１何莎２鐘曉媛１趙敏１任萬軍１,?(１四川農(nóng)業(yè)大學(xué)農(nóng)學(xué)院/農(nóng)業(yè)部西南作物生理生態(tài)與耕作重點(diǎn)實(shí)驗(yàn)室/四川農(nóng)業(yè)大學(xué)生態(tài)農(nóng)業(yè)研究所,四川溫江６１１１３０;２成都市郫縣氣象局,四川郫縣６１１７３０;?通訊聯(lián)系人,EＧmail:rwjun＠１２６．
2、com)CharacteristicsofStemGrowthandFormationofGrainofindicaHybridRiceinDifferentPlantingMethodsandTheirCorrelationwithMeteorologicalFactorsTIANQingＧlan１,LIUBo１,SUNHong１,HESha２,ZHONGXiaoＧyuan１,ZHAOMin１,RENWanＧjun１,?(１CollegeofAgronomy,SichuanAgriculturalUniv
3、ersity/KeyLaboratoryofCropPhysiology,Ecology,andCultivationinSouthwestChina/InstituteofEcologicalAgriculture,SichuanAgriculturalUniversity,Wenjiang６１１１３０,China;２PixianMeteorologicalBureau,Pixian６１１７３０,China;?Correspondingauthor,EＧmail:rwjun＠１２６c．om)TIANQin
4、glan,LIUBo,SUNHong,etal．Characteristicsofstemgrowthandformationofgrainofindicahybridriceindifferentplantingmethodsandtheircorrelationwithmeteorologicalfactors．ChinJRiceSci,２０１６,３０(５):５０７Ｇ５２４．Abstract:Theobjectiveofthisstudyistoexplorethegrowthpatternanddif
5、ferencesofstemandpanicleofindicahybridriceundervariousplantingmethodsinpanicledifferentiationstage,andtoinvestigatetheeffectsofplantingmethodsongrainformation．Asplitplotexperimentwascarriedoutin２０１４withtwofactors,includingvariety(Yixiangyou２１１５andFyou４９８)a
6、ndplantingmethod(mechanizeddirectＧseeding,MD;mechanizedtransplanting,MT;handtransplanting,HT)．TheGrowthpatternofstemandpanicle,theformationcharacteristicsofgrainwereresearched,andtherelationshipbetweenmeteorologicalfactorsinpanicledifferentiationstageandth
7、egrowthofstemandpaniclewereanalyzed．Theresultswereasfollows:１)Lengthoffirsttothirdelongatedinternodesfromthebasestablized２０d,１６dand１２dbeforeheading,respectively,indicatingthatreducinglengthandincreasingroughnessofbasalfirstandsecondinternodesshouldbedone１６
8、dbeforeheading．Drypanicleweightandratioofpanicletostemincreasedrapidly１２dbeforeheading．２)Dryweightratioofpanicletostemwassignificantlypositivelycorrelatedwithrachisbranchesandspiketetsfrom１６dbeforeheadingtohe
