京郊近年随着种植制度的改革和早熟绿豆品种的出现,夏播绿豆的面积在逐年扩大。 一般于麦收后6月下旬播种,7月下旬至8月上旬开花,此时正值高温多雨,利于绿豆生长发育和花荚形成。8月下旬雨季末期,阳光充足,绿豆进入荚粒期,需水量减少。9月上旬气候逐渐凉爽,进入籽粒成熟期。 In recent years, with the reform of the planting system and the emergence of early maturing mung bean varieties in the suburbs of Beijing, the area of ​​summer sowing mung beans has been expanding year by year. It is generally sown in late June after wheat harvest and from late July to early August when the temperature is high and rainy, which is conducive to the growth and development of mung beans and the formation of flower pods. Late in the rainy season in late August, sunny, green beans into the pod grain period, reducing water requirements. In early September, the climate gradually cooled and entered the grain ripening stage.