不同规模玉米种植技术效率差异分析——基于随机前沿生产函数与农户微观数据的研究

基于黑龙江、辽宁、河北和山东4个省的372组调研数据,运用倾向得分匹配法和随机前沿模型得到玉米种植农户生产效率模型,依据最大似然检测判断不同规模玉米种植户的生产效率模型,分别估算农户生产效率模型和生产效率水平。结果表明,匹配前的大规模农户效率高于小规模农户,匹配后结果相反。以研究结论为基础,本文为难以改变或不愿意改变玉米种植面积的农户提供效率水平提升的参考依据和建议。

Analysis on Technical Efficiency Difference of Maize Farmers —Evidence from Stochastic Frontier Analysis and Farmers’ Micro Data

This paper is based on 372 sets of survey data from four provinces in China: Heilongjiang, Liaoning, Hebei, and Shandong. The propensity score matching method and stochastic frontier model are used to obtain a production efficiency model for maize farmers. Based on a maximum likelihood detection, production efficiency models for different sizes of maize farmers are determined, and the production efficiency model and level of farmers are estimated separately. The results indicate that the efficiency of large-scale farmers before matching is higher than that of small-scale farmers, while the results after matching are opposite. Based on the research conclusions, this paper provides reference and suggestions for improving the efficiency levels of farmers who are reluctant or unwilling to change the area of maize cultivation.