国内玉米市场自1 998年国家取消了玉米定购价,并从2 0 0 2年开始除东北地区以外的其他地区玉米均取消了国家保护价。虽然,2 0 0 2年以及2 0 0 3年东北地区仍然执行玉米国家保护价政策,但由于保护价玉米区域范围逐渐缩小,且保护价玉米收购数量也在逐年减少。因此,当玉米市场价格 The domestic corn market has canceled the purchase price of maize since 1998, and the state protection price has been lifted from 2002 except for the northeast region. Although the policy of national protection price of maize in Northeast China was still implemented in 2002 and 2003, due to the shrinking of the protection price corn area and the decrease of the purchase price of the protection price maize year by year, So when the corn market price