The Impact of Digital Economy Development on the Efficiency of Agricultural Machinery Socialization Services

在农业数字化转型背景下，探究数字经济对农机社会化服务效率的影响对构建现代农业产业互联网体系具有重要价值。本文利用超效率SBM模型和熵权法，分别测算了2011~2022年中国31个省(市、自治区)的农机社会化服务效率和数字经济发展水平，并通过Tobit模型揭示其作用机制。研究发现：(1) 数字经济发展通过优化农机供需匹配算法、降低交易成本等路径，显著提升农机社会化服务效率，且该效应在控制内生性后仍稳健；(2) 地形坡度在数字经济发展对农机社会化服务效率的正向促进作用中起负向调节效应；(3) 数字经济发展对农机社会化服务效率的影响具有异质性，具体表现为东部、西部与高耕地资源禀赋地区数字经济发展促进作用更显著。In the context of the digital transformation of agriculture, exploring the impact of the digital economy on the efficiency of agricultural machinery socialization services is of great value in building a modern agricultural industry Internet system. In this paper, using the super-efficient SBM model and entropy weight method, the efficiency of agricultural machinery socialization services and the development level of digital economy in 31 provinces (municipalities and autonomous regions) of China from 2011 to 2022 are measured respectively, and the mechanism of its action is revealed through the Tobit model. It is found that (1) digital economic development significantly improves the efficiency of agricultural machinery socialization services through the paths of optimizing the algorithm for matching supply and demand of agricultural machinery and reducing transaction costs, and the effect remains robust after controlling for endogeneity; (2) terrain slope plays a negative moderating effect in the positive facilitating effect of digital economic development on the efficiency of agricultural machinery socialization services; and (3) the effect of digital economic development on the efficiency of agricultural machinery socialization services has a heterogeneity, specifically manifested in the eastern, western and high arable land resource endowment areas digital economic development promotion effect is more significant.