中文摘要：

从治理结构视角出发，中间形式的农产品供应链组织可细分为与非资格伙伴的关系型治理、与有资格伙伴的关系型治理、正式的合同治理、关系型战略联盟和产权型战略联盟五种模式，不同的供应链组织模式对农产品质量安全的保障机制具有差异，紧密的合作关系有助于提高农产品质量安全。在农产品供应链合作中，正式的有法律强制效力的合同、信息共享机制及共同决策机制和非正式的信任、沟通交流等都对产品质量安全具有保障作用。虽然目前我国农产品供应链组织参与主体不断扩大，合作模式从松散逐渐向紧密趋势发展，但农产品供应链组织的发展还处于较低水平，应通过政府的大力支持、核心企业能力的提升、合作机制的改进推动其向高层次的组织模式发展。

英文摘要：

Based on the governance structure of relationships, the agricultural supply chain can be characterized into five types： a more stable relationship with partners, the partner of choice of non-contractual stable relationship, formal contractual relations, strategic alliances based on relationship and strategic alliances based on property rights. The quality safeguard mechanism of agricultural product is not same in different supply chain organization. Close relationship can improve the safety and quality of China＇s agricultural product. In cooperation of agricultural supply chain, formal mechanism and informal mechanism are all important to guarantee the product＇s quality and safety. Formal mechanism includes legally binding contract, information sharing mechanism and joint decision-making mechanism. Informal mechanism includes trust, communication and so on. Currently, the number of participants of agricultural supply chain organization is increasing, the relationship shows a close characteristic, but China＇s agricultural supply chain organization is still at a low level, we should promote it to a higher level through increasing the support of guvemment, enhancing core business capabilities and optimizing cooperation mechanisms.