纵向关联市场间的价格传递

Price Transmission in Vertically Related Markets

本文运用均衡移动模型研究农业生产者与食品零售商之间的纵向价格传递关系。模型建立在如下假设之上：即农产品（食品）营销企业在零售环节拥有寡占卖方力量、在农产品收购环节拥有寡占买方力量、营销企业所需要的农产品投入与其他营销投入之间存在一定替代关系并拥有规模报酬可变的技术。结果表明，市场力量和规模报酬对价格传递的影响十分复杂，一方面取决于农产品供给函数和食品需求函数的具体形式，另一方面还取决于外生冲击作用下农产品收购环节与食品零售环节市场力量变化的相对幅度。

This paper models the vertical relation between retailers and suppliers in the food industry whereby retailers exercise the seller＇s power in their relations with consumers and the buyer＇s power in their relations with producers. The degree of price transmission, relative to the perfectly competitive benchmark, both from the farm to the retail sector assuming a supply shock and from the retail to the farm sector assuming a demand shock has been evaluated.