由于世界各国普遍重视本国的粮食安全问题,国际粮食贸易量占全球粮食产量的比例并不高。对多数国家来说,国内粮食市场与国际粮食市场存在一定程度的分割,其价格的形成具有一定的独立性。根据世界主要粮食生产 Due to the fact that countries in the world generally attach importance to the issue of food security in their own countries, the share of international food trade in global food production is not high. For most countries, there is a certain degree of division between the domestic grain market and the international grain market, and its price formation has certain independence. According to the world’s major food production