空间溢出视角下农业技术进步对城乡收入差距的影响研究——以河南省县域为例
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中国农业大学经济管理学院 北京 100083

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国家社会科学基金重大项目(18ZDA074)


The impact of agricultural technology progress on urban-rural income gap from the perspective of spatial spillover: A case study of counties in Henan Province
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College of Economics and Management, China Agricultural University

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Major Program of National Social Science Foundation of China (18ZDA074).

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    摘要:

    县域是我国经济社会发展的重要地理单元,农业技术进步对解决城乡收入差距、扎实推动共同富裕具有重要意义。本文基于技术扩散理论,以河南省为例,利用2010—2019年县域数据,采用DEA-Malmquist指数测算农业全要素生产率,运用动态空间杜宾模型和偏微分分解的方法,分析农业技术进步对城乡收入差距的影响,探讨空间溢出效应的大小、范围和作用路径。结果表明,河南省农业技术进步主要依靠农业前沿技术进步引致且伴随农业技术效率的损失,河南省城乡收入差距存在显著的空间集聚性。农业技术进步与城乡收入差距呈负相关关系,对城乡收入差距抑制效应大小为-0.013。在时间维度,短期技术溢出效应系数显著为负,长期不显著;在区域异质性维度,不同人均生产总值水平的地区农业技术进步对城乡收入差距的抑制作用有所差异;在地理距离维度,150 km以内为空间溢出的密集区,随着距离的增大空间溢出效应越来越小。研究表明,农业前沿技术进步是有效抑制城乡收入差距的溢出路径。因此,为缩小县域城乡收入差距,提出要继续加大农业科技投入和成果转化,降低技术扩散的交易成本、破除县域农业技术溢出壁垒,着力构建县域技术信息交流网络,在进一步推进前沿技术进步的同时重视技术效率的要素重配置作用等政策建议。

    Abstract:

    Counties are important geographical units for China’s economic and social development. Agricultural technological progress is one of focuses for reducing China’s urban-rural income gap and promoting common prosperity. Based on the county level data in Henan Province from 2010 to 2019 and the theory of technology diffusion, this study evaluated the agricultural total factor productivity by the DEA-Malmquist index, analyzed the impacts of the progress on urban-rural income gap by the dynamic spatial Durbin model and partial differential decomposition method, and discussed the degree, sphere, and path of the effects. Results show that the progress of agricultural frontier technology mainly contributes to the progress of agricultural technology in Henan Province and the process accompanies by the losses of agricultural technical efficiency as well. A significant spatial agglomeration of urban-rural income gap exists in Henan Province. Agricultural technological progress is negatively correlated with the income gaps that decreases the gaps by 0.013. From the time dimension, the technology spillover effect coefficient is significantly negative in short-term, but not significant in the long-term. About the regional heterogeneity and regional agricultural technological progress with different per capita GDP levels have different inhibitory effects on the income gaps. For geographical distances, the concentrated area of spatial spillover effects is within 150 km, and the effects become smaller and smaller with the increase of distance. The study proves that agricultural frontier technological progress is an effective way to suppress the spillover path of urban-rural income gap. Therefore, to narrow the income gaps among counties, this study suggests continuing to increase investment in agricultural science and technology and promote their results’ transformation from theory to practice, reducing the transaction cost of technology diffusion, breaking the barriers to agricultural technology spillover in counties, and setting a county-level technology information exchange network.

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  • 收稿日期:2022-04-29
  • 最后修改日期:2022-08-08
  • 录用日期:2022-08-08
  • 在线发布日期: 2022-09-15
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