河南农业大学学报

【目的】探究国家农业高新技术产业示范区政策对农业全要素生产率的影响，为完善农业发展相关政策提供理论依据。【方法】将国家农高区政策作为一项准自然试验，构建双重差分模型，评估国家农高区设立对农业全要素生产率的政策效应。【结果】农高区的设立显著促进了农业全要素生产率的提升。经过一系列稳健性检验后，结论仍然成立。机制分析发现，农高区政策通过提升农业创新水平、加大农业扶持程度促进农业全要素生产率的提升。从异质性结果来看，受粮食产销功能定位、区域地形条件以及所在城市发展层级等客观差异影响，农高区建设对农业全要素生产率的提升效应呈现出明显的区域分化特征。其中，对非主产区的影响大于主产区，对地形起伏地区的影响大于地形平整地区，对三线及以上城市的影响大于三线以下城市。【结论】持续推进农高区政策；对非主产区、地形起伏地区以及三线及以上城市的政策响应优势，适度加大资金投入、科技资源、人才引育等方面的倾斜力度。

【Objective】 To provide policy inspiration for accelerating the construction of National Agricultural High-tech Industrial Demonstration Zone(Agri-High-tech Zone) and promoting the growth of agricultural total factor productivity. 【Method】 This article takes the national policy of Agri-High-tech Zone as a quasi natural experiment， constructs a difference in differences model， and evaluates the policy effect of the establishment of national Agri-High-tech Zone on agricultural total factor productivity. 【Result】The establishment of Agri-High-tech Zone significantly promoted the improvement of total factor productivity in agriculture. After a series of robustness tests， the conclusion still holds true. Mechanism analysis reveals that policies in Agri-High-tech Zone promote the increase of total factor productivity in agriculture by enhancing agricultural innovation levels and increasing agricultural support. From the heterogeneity results， it can be seen that due to objective differences such as the positioning of grain production and sales functions， regional terrain conditions， and the development level of the cities where they are located， the construction of Agri-High-tech Zone has a significant regional differentiation effect on the improvement of agricultural total factor productivity. Among them， the impact on non main production areas is greater than that on main production areas， the impact on terrain undulating areas is greater than that on terrain flat areas， and the impact on third tier and above cities is greater than that on cities below third tier. 【Conclusion】 Continuously promote policies for Agri-High-tech Zone; We will moderately increase investment in funds， scientific and technological resources， talent attraction， and other aspects in response to the policy advantages of non main production areas， terrain undulating areas， and third tier and above cities.