摘要
文章基于时变动态阈值面板随机前沿模型,对2002—2021年保护性耕作政策不同演进阶段的粮食生产技术效率进行估算,并将不同模型的估算结果进行比较分析,探究粮食生产技术效率水平的阶段性特征和时空分布格局。研究发现:基于时变阈值面板的随机前沿生产函数模型对生产效率的估计更准确;在多种投入要素中,土地和资本对粮食生产的贡献较大,但要素配置结构仍有优化空间;在政策的不同演进阶段,制度改革推动技术效率波动上升,资源禀赋差异是技术效率区域差异化的主要诱因。应不断完善环境友好型政策的引导与支持,健全地方自主实践机制;因地制宜推广环境类技术;持续深化农村土地制度改革,有效激发土地活力。
The essay estimates the technical efficiency of grain production at different stages of the evolution of conserva⁃tion tillage policies from 2002 to 2021,using a time-varying dynamic threshold panel stochastic frontier model.Then a comparative analysis of estimated findings from different models is conducted to investigate the stage-specific features and spatiotemporal distribution patterns of technical efficiency in grain production.Findings:The utilization of a stochas⁃tic frontier production function model,utilizing a time-varying threshold panel,yields more precise estimations of produc⁃tion efficiency.Among various inputs,land and capital notably play pivotal roles in enhancing grain production efficiency,yet there is still potential for further optimization in the allocation of factors.Throughout different phases of policy evolu⁃tion,institutional reforms have been instrumental in influencing fluctuations in technical efficiency.Moreover,disparities in resource endowments emerge as the primary determinant of regional variations in technical efficiency.Continuous en⁃hancements are necessary in guiding and supporting environmentally friendly policies,and refining the mechanism for lo⁃cal autonomous practice.It is imperative to promote environmental technologies tailored to specific local conditions and to further deepen rural land system reform in order to effectively enhance land productivity.
作者
穆月英
张精
MU Yueying;ZHANG Jing(College of Economics and Management,China Agricultural University,Beijing 100083,China)
出处
《华东经济管理》
北大核心
2024年第6期1-11,F0003,共12页
East China Economic Management
基金
国家社会科学基金重大项目“我国粮食生产的水资源时空匹配及优化路径研究”(18ZDA074)。
关键词
环境友好型政策
粮食生产效率
保护性耕作
时变阈值
阶段性
地域性
environmentally friendly policies
grain production efficiency
conservation tillage
time-varying threshold
stages
regional characteristics
