我院在给中国科学院石家庄农业现代化研究所繁殖大豆新品种时,采用如下收打技术,对保证种子质量,收到了较好的效果。一、适时收获。大豆收割既不能过早也不能过晚。早了粒嫩软,瘪粒多,影响种子质量;晚了要裂荚、落粒,严重减产。当大豆的豆荚变褐色,而里面的籽粒还稍软时即应收割。割后晒一两天豆粒就硬实了,这时再裂荚也不怕了,这就 When we gave a new breed of soybean to Shijiazhuang Institute of Agricultural Modernization, CAS, we adopted the following harvesting techniques to ensure good seed quality and received good results. First, timely harvest. Soybean harvesting is neither too early nor too late. Early soft and tender, shrunken tablets, affecting the quality of the seeds; later to crack pods, falling tablets, a serious cut. When soybean pods turn brown, and the grains are still slightly soft, they should be harvested. After cutting beans for a day or two on the hardened, and then cracked pods are not afraid, and this