Notes on farm‐retail price transmission and marketing margin behavior
指出完美价格传导的弹性等于1的定义与Gardner模型不一致，并分析了绝对营销价差与相对营销价差对零售需求、投入供给和技术变化的不同反应，为农业经济学研究提供参考。
Abstract Perfect farm‐retail price transmission sometimes is taken to mean an elasticity of price transmission (EPT) equal to 1. We show that this definition is inconsistent with Gardner's (1975) model. We also show that the absolute marketing margin (defined as the difference between the retail price and farm price) responds differently to shifts in retail demand, input supply, and technical change in the marketers’ production function than does the relative marketing margin (defined as the ratio of the retail price to the farm price). The empirical implications of these results are discussed in some detail.