冬大豆一般在冬季播种,初春开花,清明前后收获。粤西地区多是冬大豆——早稻——晚稻;冬大豆——早稻——秋甘薯;冬大豆——早稻——秋花生等一年三熟制。适期播种,就能使一年三熟,熟熟高产。播种过早,冬大豆开花期容易受到低温寒潮的影响,导致落花落荚,降低产量;播种过晚,则冬大豆收获过迟,推迟了早稻插秧季节,不利于熟熟高产。大豆 Winter soybean sowing in the winter, early spring flowering, before and after harvest. Most of western Guangdong are winter soybeans - early rice - late rice; winter soybean - early rice - autumn sweet potato; winter soybean - early rice - autumn peanut and other year three cooked. Appropriate sowing, you can make three crops a year, cooked high yield. Early sowing, winter soybean flowering susceptible to cold and cold temperatures, resulting in falling pods, reduce production; sowing too late, the winter soybean harvest was delayed, delayed the season of early rice transplanting, is not conducive to mature and high yield. Soy