基于参数和非参数方法的玉米生产效率研究——以吉林省为例

Study on the Efficiency of Maize Production based on Parametric and Non-parametric Analysis:Case of Jilin Provice

本文以中国玉米主产区吉林省为例,基于非参数HMB指数方法和参数K-L随机前沿生产函数方法,采用1991—2005年投入产出的面板数据(PanelData),对玉米生产的全要素生产率进行实证分析。结果表明,主产区的玉米全要素生产率(TFP)变动具有周期性的变化特点,每一周期技术进步、技术效率、规模效率和混合效率对玉米全要素生产率变动的作用不同;分区综合结果显示,黄金边缘区玉米生产率的增长幅度最高,黄金玉米主产区玉米生产率的增长幅度次之,非主产区玉米生产率的增长幅度最低。今后为促进主产区玉米全要素生产率增长应采取促进技术进步、挖掘主产区潜力等措施。

Based on the output-input panel data of maize production in Jilin province from 1991 to 2005,methods of K-L SFA model and HMB Index were applied into the study of the changes of TFP.Results were as follows.First,the maize TFP changed periodically,due to the different effects of SC(Scale Efficiency change),EC(pure tech-efficiency change),TC(change of technological progress),and ME(mixed efficiency change).Second,the maize productivity growth rate of Golden Corn Belt border lied in the first place,growth rate of Golden Corn Belt lied second,and growth rate of disadvantage areas lied third.So,the author suggested taking some measures to promote the maize TFP,such as advancing technological progress,tapping production potential,and so on.