粮食贸易是市场参与各方和学术界共同关心的焦点话题之一。我国粮食生产不具有明显的比较优势,因此,一般认为加入世贸组织以后粮食进口将快速增加。但迄今为止,国内粮食市场并没有受到国际市场的严重影响,这一事实产生的部分原因可能是粮食流通体制改革和农业税改革,但农村劳动力、灌溉、播种面积等准固定投入的粘滞性也可能发挥了重要作用。文章分四个部分从这一角度解释我国粮食市场供给稳定的内在原因。 Food trade is one of the key topics of common concern to all parties involved in the market and academia. China’s grain production does not have obvious comparative advantages. Therefore, it is generally believed that food imports will rapidly increase after China’s accession to the WTO. However, so far, the domestic grain market has not been seriously affected by the international market. Part of the reason for this may be the reform of the grain circulation system and the reform of agricultural tax, but the stickiness of fixed inputs such as rural labor force, irrigation and sown area May have played an important role. The article divides four parts from this point of view to explain the inherent causes of the stable supply of grain in our country.