关键词: AM菌根, AM菌根, 设施蔬菜, 连作障碍

Abstract:

It is necessary for developing modern agriculture to build social service system. With the rapid development of urban agriculture, many initiative models of social service system of urban agriculture spring up in Beijing, such as the town integrated service center, public procurement, the financial cooperation, the linkage of institute and administrative division, the promotion of excellent talents, the promotion of specialized cooperative organization, the promotion of leading company in industrialization, the promotion of specialized market. The article analyzes the concept and feature, mode of operation, great value of these models, in order to provide experience for Beijing and other provinces.