利用作物生长动态统计方法，计算和分析了５～９月气温和降水变化对东北地区水稻、玉米、大豆３种主要作物生产潜力的影响，建立了各站气温、降水与作物生产潜力的关系式，并用来评估气温和降水变化对当年作物产量的影响，还讨论了未来气候变化对东北地区作物生产潜力的可能影响． Using the method of dynamic crop growth statistics, the effects of air temperature and precipitation from May to September on the production potential of three main crops of rice, maize and soybean in northeast China were calculated. The relationship between temperature, precipitation and crop production potentials was established And used to assess the effects of changes in temperature and precipitation on the current crop production. The possible impact of future climate change on crop production potential in Northeast China was also discussed.