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1、中国水稻科学(ChinJRiceSci),２０１６,３０(５):５０７－５２４http://www．ricesci．cnDOI:１０．１６８１９/j．１００１Ｇ７２１６．２０１６．６０１２５０７不同播栽方式下杂交籼稻茎秆生长和穗粒形成特点及与气象因子的关系田青兰１刘波１孙红１何莎２钟晓媛１赵敏１任万军１,∗(１四川农业大学农学院/农业部西南作物生理生态与耕作重点实验室/四川农业大学生态农业研究所,四川温江６１１１３０;２成都市郫县气象局,四川郫县６１１７３０;∗通讯联系人,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
