邓海艳 等：1990-2013年公共研发与推广对中国农业生产力的影响【转】

*中文标题和摘要系简单翻译，可能存在部分错误，请以英文为准

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摘要：

农业研究和推广是政府可以用来促进农业增长和转型的两个主要政策工具。中国在农业研究和推广方面进行了大量投资，形成了世界上最大的研究和推广系统。本研究考察了 1990 年至 2013 年公共农业研究和推广对中国省级农业生产力的贡献，并估算了这些投资的社会回报率。本研究在回归分析中采用不同的滞后分布结构（如梯形、伽马和多项式）进行公共农业研究和推广，本研究发现公共农业研发、公共推广和农民教育对农业生产力增长做出了重大贡献。平均而言，农业研发公共投资的社会回报率在50%左右，农业推广为29%。不同省份的公共研究回报率从 24% 到 76% 不等，扩展范围从 11% 到 52%不等。

Abstract:

Agricultural research and extension are two main policy tools that governments can use to generate agricultural growth and transformation. China has made major investments in agricultural research and extension such that it achieved the largest research and extension systems worldwide. This study examined the contribution of public agricultural research and extension to provincial agricultural productivity in China from 1990 to 2013 and estimated the social rate of return on these investments. Employing different lag distribution structures (e.g., trapezoid, gamma, and polynomial) for public agricultural research and extension in the regression analyses, this study found that public agricultural research and development, public extension, and farmers' education have made major contributions to agricultural productivity growth in China. On average, the social rate of return to public investment in agricultural research and development was around 50%, and agricultural extension was 29%. Returns to public research ranged from 24% to 76% and the extension, from 11% to 52% across different provinces.

原文链接（点击“阅读原文”跳转）：

https://doi.org/10.1016/j.chieco.2021.101699

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撰文编辑：王煜正

审核：龙文进