本项目主要研究近年来我国粮食收储制度改革对关联市场价格及其传递机制的影响，并对未来政策变化的价格传递效应进行动态模拟，在此基础上提出完善粮食收储制度、合理调控粮食相关产品价格等方面的政策建议。具体而言，首先，综合考虑买方和卖方市场力量以及规模经济，并结合我国粮食产业的结构特点，构建一个多部门、多环节的均衡移动模型，以刻画在不同收储制度下我国粮食及其关联市场的价格传递机制。其次，根据计量方法和均衡移动模型的需要，构建一个涵盖周度、月度、季度和年度的开放性多频数据库，使之能用于粮食及相关产业的价格传递问题研究。同时，对数据库进行实时更新，免费向社会公开发布。最后，采用适当的计量方法进行实证分析，厘清在不同类型收储制度下我国粮食市场价格的传递机制，以及收储制度改革对关联市场价格及其传递机制的影响，并对未来政策变化的价格传递效应进行模拟预测。

This projects intends to study the effect of purchase and storage institution reform for China's grain industry on the price and its transmission mechanism in grain-related markets, and then to conduct dynamic simulation on the price transmission effect of future policy changes. On this basis, policy suggestions on perfecting purchase and storage institution of grain, and rationally regulating grain and related products prices will be presented. Specifically, first, according to the structural features of China's grain industry, we intend to construct an equilibrium displacement model incorporating multi-sectors and multi-links, as well as oligopsony power, oligopoly power and scale economy. The price transmission mechanism of China's grain and its related markets will be depicted through this model. Second, based on the requirement of econometric approaches and equilibrium displacement model, we are about to build an open and multi-frequency database which covers weekly, monthly, quarterly and annual data. The database will be updated on time and released to the public freely. Finally, appropriate econometric approaches will be employed to distinguish price transmission mechanisms under different types of purchase and storage institutions of China's grain industry, and to investigate the influence of purchase and storage institution reform on price and its transmission mechanism in related markets. What's more, we will simulate and forecast the possible policy changes and the corresponding price transmission effects.