Yuan Lingran, Zhang Shurui, Wang Shuo, Qian Zesen, Gong Binlei
Department of Agricultural Economics and Management, School of Public Affairs, Zhejiang University, Hangzhou, China.
School of Economics, Zhejiang University, Hangzhou, China.
J Product Anal. 2021;55(2):135-153. doi: 10.1007/s11123-021-00600-5. Epub 2021 Mar 26.
The goal of this article is to answer two questions: Has world agricultural convergence occurred? If not, how can this goal be fulfilled? This article introduces a model averaging method to consider both a parametric and a semi-parametric SFA model to better estimate technical efficiency. Then, three types of convergence tests are employed to check if world agricultural catch-up occurs and to determine the degree of convergence across different groups of countries. The empirical results on a balanced panel of 126 countries from 1970-2014 show that world agricultural convergence has not occurred. This article then investigates the situations in different groups of countries and discusses how to use international trade, irrigation system, and structural transformation to improve agricultural efficiency and to diminish the efficiency gap among different countries in the future.
世界农业趋同是否已经发生？如果没有，如何实现这一目标？本文引入了一种模型平均方法，同时考虑参数和半参数随机前沿分析（SFA）模型，以更好地估计技术效率。然后，采用三种趋同测试来检验世界农业是否出现追赶现象，并确定不同国家组之间的趋同程度。对1970年至2014年126个国家的平衡面板数据进行的实证结果表明，世界农业趋同尚未发生。本文随后研究了不同国家组的情况，并讨论了如何利用国际贸易、灌溉系统和结构转型来提高农业效率，并在未来缩小不同国家之间的效率差距。
