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1、中国水稻科学(ChinJRiceSci),２０１５,２９(６):６１９－６２７http://www．ricesci．cnDOI:１０．３９６９/ji．ssn．１００１Ｇ７２１６．２０１５．０６．００８６１９根际氧浓度对水稻分蘖期养分吸收和根系形态的影响徐春梅１,３谢涛２王丹英３陈松３计成林３章秀福３,∗石庆华１,∗(１江西农业大学农学院/作物生理生态与遗传育种教育部重点实验室,南昌３３００４５;２长江大学农学院,湖北荆州,４３４０２０;３中国水稻研究所水稻生物学国家重点实验室,杭州３１０００６;∗通讯联系人,EＧmail:zh
2、angxf１６９＠sohu．com;qinghua．shi＠１６３．com)EffectsofRhizosphereOxygenConcentrationonNutrientUptakeandRootMorphologyofRiceatTilleringStageXUChunＧmei１,３,XIETao２,WANGDanＧying３,CHENSong３,JIChengＧlin３,ZHANGXiuＧfu３,∗,SHIQingＧhua１,∗(１KeyLaboratoryofCropPhysiology,EcologyandGene
3、ticBreeding,MinistryofEducation/CollegeofAgronomy,JiangxiAgriculturalUniversity,Nanchang３３００４５,China;２CollegeofAgronomy,ChangjiangUniversity,Jingzhou４３４０２０,China;３StateKeyLaboratoryofRiceBiology,ChinaNationalRiceResearchInstitute,Hangzhou３１０００６,China;∗Correspondinga
4、uthors,EＧmail:zhangxf１６９＠sohuc．om;qinghuas．hi＠１６３c．om)XUChunmei,XIETao,WANGDanying,etal．Effectsofrhizosphereoxygenconcentrationonnutrientuptakeandrootmorphologyofriceattilleringstage．ChinJRiceSci,２０１５,２９(６):６１９Ｇ６２７．Abstract:Ahydroponicexperimentwasconductedtostudyth
5、eeffectsofrhizosphereoxygenconcentrationonriceseedlingbiomass,nutrientabsorptionandaccumulation,androotmorphologywithXiushui０９andChunyou８４asmaterial．Withanonlinedissolvedoxygenmeter,fourdissolvedoxygen(DOTs)levelsweresetincludinglowoxygenconcentration(DOT０to１．０mg/L)
6、,mediumoxygenconcentration(DOT２．５to３．５mg/L),highoxygenconcentration(DOT＞６mg/L,continuousbubblingwithatmosphericair)andcontrol(conventionalhydroponics,withoutoxygenregulation)．Theresultsshowedthatcomparedwiththecontrol,theroot,shootandtotaldryweightsincreasedby３０?３０％
7、,３２．９６％and３２．４６％forXiushui０９andby７．０１％,１．７７％and９．１７％forChunyou８４,respectivelyunderthemediumoxygenconcentration;underhighoxygencontentration,theroot,shootandtotaldryweightsdecreasedby３５?３５％,１５．６２％and１７．７６％forXiushui０９andby４３．９５％,１８．９２％and２１．３４％forChunyou８４,respective
8、ly．Theroottoshootratiosincreasedunderlowoxygentreatment．ThetotalabsorptionandaccumulationofN,P,K,Mn,MgandCaincreasedunderthemediumoxygentr
