Exploring the impact of agricultural productive services on food security can help accelerate the development of agricultural modernization. Based on four subsystems of food supply security, food access security, food stability security and food sustainability security, we construct a food security evaluation index system, measure the food security level of 30 Chinese provinces by using the entropy value method, and empirically analyze the spatial spillover effect and regional heterogeneity of agricultural productive services on food security using a spatial econometric model. The results show that agricultural productive services have a significant positive spatial spillover effect on food security, i.e., agricultural productive services can not only improve the food security level of the region, but also improve the food security level of neighboring regions. By region, agricultural productive services in the main foodproducing regions and the balanced food production and marketing regions help improve food security, while the results in the main food marketing regions are not significant. Among the control variables, rural human capital can significantly improve the level of food security. Therefore, we should vigorously develop agricultural productive services, focus on the coordinated development of regional grain industries, give full play to the advantages of each production area according to local conditions, and improve the level of agricultural knowledge and professional skills of farmers.

探究农业生产性服务对粮食安全的影响，有助于加快农业现代化发展。基于粮食供给安全、粮食获取安全、粮食稳定安全和粮食可持续安全4个子系统，构建粮食安全评价指标体系，利用熵值法测算中国30个省份粮食安全水平，采用空间计量模型实证分析农业生产性服务对粮食安全的空间溢出效应和区域异质性。研究发现：农业生产性服务对粮食安全具有显著的正向空间溢出效应，即农业生产性服务不仅能提高本地区的粮食安全水平，也能够改善邻近地区的粮食安全水平。分区域看，粮食主产区和粮食产销平衡区农业生产性服务有助于提高粮食安全水平，而粮食主销区结果并不显著。控制变量中，农村人力资本能够显著提高粮食安全水平。因此，应大力发展农业生产性服务，注重区域粮食产业协调发展，因地制宜发挥各产区优势，提高农户农业知识和专业技能水平。