1983年利用160Gy~(60)Coγ射线照射大豆品种合丰25(合交77-153)风干种子,于1986年获决选品系克辐8305-2,并先后通过产量鉴定、省区域试验、生产试验和大面积高产示范栽培,1992年初经省品种审定委员会审定推广,命名为丰收22号。该品种具有早熟、高产、抗逆性强等特点,生育日数116d左右,一般产量为2529～2784kg/hm~2,比标准品种增产11.5％。1994年种植面积达13.3万hm~2左右。 In 1983, 160Gy ~ (60) Coγ-ray was used to irradiate soybean variety Hefeng 25 (TCD 77-153) to air-dry the seeds. In 1986, it was selected by Ke-tong 8305-2 and passed the test of output identification, Experiments and large-scale high-yield demonstration cultivation, early 1992 approved by the Provincial Variety Commission validation, named harvest on the 22nd. The variety is characterized by early maturity, high yield and strong resistance. The number of days of birth is about 116 days, and the average yield is 2529 ~ 2784 kg / hm ~ 2, which is 11.5% higher than that of the standard varieties. 1994 planting area of ​​133,000 hm ~ 2 or so.