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1、中国水稻科学(ChinJRiceSci),２０１４,２８(２):２１１－２１６http://www．ricesci．cnDOI:１０．３９６９/ji．ssn．１００１Ｇ７２１６．２０１４．０２．０１４２１１杂草稻对东北移栽稻群体生长环境及产量的影响马殿荣∗孔德秀高齐徐凡赵明辉唐亮徐正进陈温福∗(沈阳农业大学水稻研究所/农业部东北水稻生物学与遗传育种重点实验室/北方超级粳稻育种教育部重点实验室,沈阳１１０８６６;∗通讯联系人,EＧmail:madianrong＠１６３．com;wfchen５５１２＠１６３．com)Effec
2、tsofWeedyRiceCompetitiononYieldandPaddyEnvironmentofTransplantedRiceinNortheastChinaMADianＧrong∗,KONGDeＧxiu,GAOQi,XUFan,ZHAOMingＧhui,TANGLiang,XUZhengＧjin,CHENWenＧfu∗(RiceResearchInstitute,ShenyangAgriculturalUniversity,KeyLaboratoryofNortheastChinaRiceBiologyandB
3、reeding,MinistryofAgriculture,KeyLaboratoryofNorthernjaponicaSuperRiceBreeding,MinistryofEducation,Shenyang１１０８６６,China;∗Correspondingauthor,EＧmail:madianrong＠１６３c．om;wfchen５５１２＠１６３c．om)MADianrong,KONGDexiu,GAOQi,etal．Effectsofweedyricecompetitiononyieldandpaddyen
4、vironmentoftransplantedriceinnortheastChina．ChinJRiceSci,２０１４,２８(２):２１１Ｇ２１６．Abstract:EffectsofweedyriceontransplantedriceandpaddyenvironmentwereinvestigatedinafieldexperimentwithweedyriceWR０３Ｇ１２andcultivatedriceShennong２６５asmaterals．Itshowedthatataweedyricedensity
5、over３plantspersquaremeter,paniclenumberperplant,grainnumberperpanice,seedsettingrate,１０００ＧgrainweightandyieldofShennong２６５significantlydecreased．Theilluminanceinthemiddle(８０cm)tolowerpart(４０cm)ofthepopulationofShennong２６５wasdramaticallyweakerthanthoseofcontrolat８:
6、００amand４:００pm．Inaddition,thedailyaverageandmaximumhumidityincreasedsignificantly．Therisingdensityofweedyriceledtothedeclineofpopulationlighttransmittancand,increaseofpopulationhumidityincultivatedrice,resultingintheenvironmentaldeteriorationandthedeclineofyield．Ke
7、ywords:weedyrice;transplanting;yield;paddyenvironment;competition马殿荣,孔德秀,高齐,等．杂草稻对东北移栽稻群体生长环境及产量的影响．中国水稻科学,２０１４,２８(２):２１１Ｇ２１６．摘要:在大田条件下研究了杂草稻WR０３Ｇ１２对移栽稻沈农２６５的产量及稻田环境的影响.结果表明,当栽培田中杂草稻密度超过３株/m２时,移栽稻沈农２６５的单株穗数、每穗粒数、结实率和千粒重极显著降低,产量极显著下降;移栽稻群体在８:００和１６:００时中(８０cm)、下部(４０c
8、m)照度极显著弱于对照,群体透光率降低;日平均气温、白天平均气温和日最高气温极显著降低;群体日平均湿度、白天平均湿度和日最高湿度显著升高.杂草稻密度增大导致栽培稻群体透光率降低,群体湿度加大,稻田群体环境恶化,最终导致减产.关键词:杂草稻;移栽;产量;稻田环境;竞争中图分类号:Q９４８．１２;S５１１．
