中国粮食生产效率空间溢出网络及提升路径

现有研究普遍关注粮食生产单元自身资源禀赋以及功能属性,对于经济主体相互作用所产生的外部性研究十分有限。为此,本文在空间引力模型的基础上着重分析网络外部性对粮食生产效率的影响,并以此为逻辑起点进一步探讨网络提升路径以及各空间单元在整体网络中的综合定位与潜力。结果表明,中国粮食生产网络空间溢出效应显著,对粮食生产效率具有明显的促进作用,其实质是规模经营思想在空间维度的扩展,符合近带动远辐射规律,且交通基础设施的互通互联与人口流动是实现网络空间外溢的主要路径。同时,整体网络中共存在4种潜在节点,包括核心控制型、局域核心型、潜力型以及边缘型。未来应充分发挥核心控制型节点的辐射带动作用,加强东西轴带的空间交互影响,实现农业资源技术的跨地域流动与互补。

Spatial spillover networks and enhancement paths of grain production efficiency in China

Existing research has generally focused on the resource endowments and functional attributes of grain production units, with limited studies on the externalities arising from the interactions of economic agents. Therefore, this paper focuses on the impact of network externalities on grain production efficiency based on the spatial gravity model and takes network externalities as a logical starting point to further explore the network enhancement path and the comprehensive positioning and potential of each spatial unit in the overall network. The results show that the spatial spillover effect of China's grain production network is significant and has an obvious promotional effect on grain production efficiency, which is, in essence, the expansion of the idea of scale management in the spatial dimension, consistent with the law of near-driving and far-radiation, and the interconnection of transportation infrastructure and population movement are the main paths to realize the spatial spillover of the network. Additionally, there are four types of potential nodes in the overall network: core control type, local core type, potential type, and edge type. In the future, it is necessary to give full play to the radiation-driven role of core-controlled nodes, strengthen the spatial interaction between the eastern and western regions of China, and realize the cross-regional flow and complementarity of agricultural resources and technologies.