Dissolvedoxygenandnitrogenformhaveimportanteffectsonricerootgrowthandnitrogenavailability.Anindicahybridrice,Guodao1,andaconventionaljaponicarice,Xiushui09,wereculturedinhypoxicnutrientsolutionwithNH4NO3or(NH4)2SO4asthenitrogensourceforsixweeksinpools.AportionoftheGuodao1seedlingsaftertreatmentinthepoolsforfourweeksweretransferredtoasplit-rootsystematdifferentdissolvedoxygencontentsandculturedforanadditionaltwoweeks.Biomass,rootmorphol...