上海是我国重要的粮食主销区。近年来,随着人口变动、城市规划调整和产业结构高度化发展,粮食的自给率不断下降,对国内、国际粮食市场依赖逐步加深,粮食市场份额占有不断出现新情况。了解和分析当前上海粮食市场份额的现状及其变化趋势,有利于在国家宏观调控下,放开主销区粮食收购、粮食市场和粮食价格,为粮食主产区腾出更大的市场空 Shanghai is an important grain sales area in China. In recent years, with the changes in population, urban planning and industrial restructuring, the self-sufficiency rate of grain has been declining, the dependence on domestic and international grain markets has been gradually deepened, and the market share of grain has been constantly emerging. To understand and analyze the current situation of the grain market in Shanghai and the trend of its changes is conducive to opening up the grain purchasing and grain markets and grain prices in the main sales areas under the national macroeconomic control so as to make a bigger market for the major grain producing areas