机械化播栽对杂交籼稻根系性状的影响

《机械化播栽对杂交籼稻根系性状的影响》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、中国水稻科学(ChinJRiceSci),２０１５,２９(５):４９０－５００http://www．ricesci．cn４９０DOI:１０．３９６９/ji．ssn．１００１Ｇ７２１６．２０１５．０５．００６机械化播栽对杂交籼稻根系性状的影响刘波１田青兰１钟晓媛１赵敏１黄光忠２马荣朝１,∗任万军１,∗(１四川农业大学农业部西南作物生理生态与耕作重点实验室,四川温江６１１１３０;２成都市郫县农村发展局,四川郫县６１１７３０;∗通讯联系人,EＧmail:marongcao＠１６３．com,rwjun＠１２６．com)EffectsofMechanizedPlant

2、ingMethodsonRootTraitsofindicaHybridRiceLIUBo１,TIANQingＧlan１,ZHONGXiaoＧyuan１,ZHAOMin１,HUANGGuangＧzhong２,MARongＧchao１,∗,RENWanＧjun１,∗(１KeyLaboratoryofCropEcophysiologyandFarmingSysteminSouthwestChina,SichuanAgriculturalUniversity,Wenjiang６１１１３０,China;２PixianBureauofRuralDevelopment,

3、Pixian６１１７３０,China;∗Correspondingauthor,EＧmail:marongcao＠１６３．com,rwjun＠１２６c．om)LIUBo,TIANQinglan,ZHONGXiaoyuan,etal．Effectsofmechanizedplantingmethodsonroottraitsofindicahybridrice．ChinJRiceSci,２０１５,２９(５):４９０Ｇ５００．Abstract:AsplitＧplotfieldexperimentwasconductedinfarmers’paddyfieldsi

4、n２０１４tostudytheeffectsofdirectseeding(DS)andmechanicaltransplanting(MT)onroottraitsofindicahybridricewithanewricerootsampler．Themainresultswereasfollows:１)Withthenewricerootsampler,samplingandstratifiedsamplingcouldbeconductedaccuratelyandconveniently;２)Totalrootlength,rootvolumean

5、dthenumberofroottipsbeforetransplantingandafterrecoveryunderMTandartificialtransplanting(AT)werealllessthanthoseunderDS,whiletherootgrowthrateandrootＧshootratiounderMTandATwerehigherthanthoseunderDSintherecoverydate;３)RootsystemunderDSgrewrapidlyintheearlygrowthstagewithalargerroot

6、numberandathinnerroottype,andthenumberofroottipsandrootＧshootratiowerelargerthanthoseunderMTandATintheheadingstage;Havingtheadvantageofbackwardness,therootsystemunderMTgrewrapidlyaftertheactivetilleringstage,andthetotalrootlengthandrootvolumewerethelargestintheheadingstage;whileroo

7、tunderMTwasthickerwithasmallernumberandtheleastrootＧshootratio．４)RootunderDSandMTdistributedshallowlycomparedwithAT,rootdryweightin０－１０cmsoillayerunderDS,MTandATaccountedfor７６．９％,７６．５％and７６．５％,respectively,andtheproportionofrootdryweightin１０－２０cmsoillayeranddeeperthan２０cmsoillayeru

8、nderDSandMTwerelessthanAT;