上世纪40年代,西方经济学界有几篇文章,探讨农产品市场价格的形成。农产品中大半是人民大众的生活必需品,其需求有一定的刚性,当市场上供不应求,就会涨价;供过于求,就会跌价。农产品的生产周期长,其供给在短期内缺少弹性,涨价,其供给不能立即增大;跌价,供给也难立即减少。农产? In the 1940s, there were several articles in western economics circles discussing the formation of market prices of agricultural products. Most of the agricultural products are necessities of life for the general public. Their demand has a certain rigidity. When the demand exceeds supply in the market, prices will rise. If the supply exceeds the demand, the price will drop. The production cycle of agricultural products is long, and its supply lacks flexibility and price increases in the short run. Its supply can not immediately increase. It is also hard to immediately reduce its supply and demand. Farm produce?