在良种选育中普遍感到种子粒重有明显下降的趋势,我们在开展激光育种中,对千粒重的影响进行了探索,初步获得了结果.一、激光处理实验选用双丰一号(晚粳)作为试验品种,分七种不同处理能量进行干种子照射,见表1所示.激光处理后当年播种,自播到收共137天,当代(L_1)结果见表2所示.从表2可看到,激光处理的比对照(CK)成苗率 In seed breeding, it is generally observed that there is a significant drop in seed weight, we explored the effect of 1000-grain weight in carrying out laser breeding, and initially obtained the results.Firstly, we chose Shuanfeng No.1 (late japonica) As the test varieties, seven different treatments were used for dry seed irradiation, as shown in Table 1. The seeds were sown and sowed for 137 days after laser treatment, and the results of contemporary (L_1) are shown in Table 2. From Table 2, See, laser-treated controls (CK) as seedlings