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大豆是短日照和喜温性较强的作物。对光、热、水、肥的反应敏感。一个大豆品种的生产和产量,受地域性及年度间自然条件变化的限制很大,其适应的积温相差不超过200℃。超越此限往南或往北推移,均会造成
Soybeans are short-day and more thermophilic crops. Sensitive to light, heat, water and fat. The production and yield of a soybean variety are greatly limited by the changes in the region and the natural conditions during the year, and the accumulated accumulated temperatures differ by no more than 200 ° C. Beyond this limit to move south or north, will result