hosebytheconventionalfertilizertreatment(T2).Theoptimizedfertilizertreat- menthadnosignificanteffecteitheronN,P,umulationbymaizeoronthesoilnutrientcontent. Comparedwiththeconventionalfertilizertreatment,theoptimizedfertilizertreatmentincreasedmaizeyieldby 474kg/haandeconomicreturnby1,150RMB.Theseincreasesweresignificant.【Conclusion】Reducing dripirrigationfertilization(by5%and8%)hadnosignificantinfluenceonplantheightorleafnumberin maize,umulation.Dripfertigationreducedtheamountoffertilizerby5% comparedwithconventionalfertilizationpractice.Dripfertigationalsohadthehighestyieldandeconomicben. efit. Keywords:maize;fertigation;yield;nutrition;economicbenefit Fundproject:SupportedbytheNationalScienceandTechnologySupportProgram(2012BAD42B02),NFSC(31360501)andHigherLevelTa1. entProgram(RCZX201132)
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