用不同注量的快中子照射大豆风干种子的试验表明,快中子对大豆的M_1代的苗高、成株率和孕性有明显的损伤效应,而且对M_2的叶绿素和株高、孕性、熟期等农艺性状均有诱变效应。不同品种对快中子的辐射敏感性不同,九农9号较吉林18敏感。试验还表明,快中子是大豆的良好诱变源。 The experiment of irradiating soybean dry seeds with different fluence of fast neutrons showed that fast neutrons had obvious damage effect on seedling height, adult plant rate and pregnancy of M_1 generation of soybean, but also had significant effect on M_2 chlorophyll and plant height, Sexual, mature and other agronomic traits have mutagenic effects. Different varieties of fast neutron radiation sensitivity is different, nine farmers 9 than Jilin 18 sensitive. Experiments also show that fast neutrons are a good source of mutagenesis for soybeans.