简介：Stochasticfrontierproductionfunctionapproachisadopted,93farmersampleshavebeencollected,pureefficiency,technicalefficiency,technicalchangeandscaleefficiencyandtheinstitutionalcontributionhavebeencalculated.Theresultsindicatedthatincreasingproductivityisthesolemeasurementtoreducepoverty,institutionandtechnicalchangearethetwokeyfactors.Therefore,stableinstitution,improvingtechnicalchangesarerequired.Atpresent,itisurgenttomaketechnicalprogre...
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