紫云英又称红花草子。其开花期较长,一般达四十天左右。因结荚成熟极不一致,所以掌握其结荚成熟期收获很重要,一般来讲;当黑荚率达百分之六十,中部呈黄荚,顶部偶育残花,少有嫩荚,即可收获。收时需拣晴天清晨,露水未干时进行。这样才不易破荚、落粒而损失产量。如果过早收获,则上中部结荚还青嫩,籽粒不充实,青籽、嫩籽多,品质会下降。如果收获期间田间落荚较多,还可用 Ziyun Ying, also known as saffron. Its flowering period is longer, usually up to about 40 days. Because of the extremely inconsistent pod ripening, it is very important to grasp the ripening of its pods. In general, when the black pod rate reaches 60%, the middle is yellow pod, reward. When it is time to pick sunny days, when the dew did not dry. This is not easy to break the pod, drop and loss of production. If premature harvest, then on the central pod also fresh and green, grain is not full, green seed, tender seed and more, the quality will decline. It is also useful if there are more pods in the field during harvest