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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