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六优1号是我院用六千辛 A 作母本,77302～1(浙江嘉兴市农科所选育)作父本配制而成的杂交粳稻新组合。1984～1985年参加南方稻区区试,单季稻亩产481.9～516.1公斤,比对照105增产18.15～25.44%。1984～1986年参加省区试,亩产分别为515.9公斤、484.8公斤和578.6公斤,比对照盐粳2号分别增产8.71%、7.08%和8.98%。1985～1986年参加省生产试验,亩产分别为493.1公斤和506.3公斤,比盐粳2号增产13.80%和12.46%。1986年全省试种近2万亩,单产稳定在450～550公斤。最近由江苏省扬州市品种审定委员会通过审定,并开始大面积生产。该组合具有较强的杂种优势,据1984年试验,平均优势30.6%,超亲优势26.81%,
Liuyou 1 is a new combination of Japonica hybrid rice made by our father with Liuqianxin A as the female parent and 77302 ~ 1 (selected by Jiaxing Agricultural Science Institute of Zhejiang Province) as our father. From 1984 to 1985, they took part in the southern rice area test. The output of single-season rice was 481.9-516.1 kg per mu, which was 18.15-25.44% more than that of the control 105. From 1984 to 1986, they took part in the provincial test and their yields per mu were 515.9 kilograms, 484.8 kilograms and 578.6 kilograms, respectively, which increased by 8.71%, 7.08% and 8.98% respectively over the control salt Jing 2. From 1985 to 1986, it took part in the provincial production test, yielding 493.1 kilograms and 506.3 kilograms per mu respectively, an increase of 13.80% and 12.46% over that of Yanjing 2. In 1986 nearly 2 million mu were planted in the province with a yield of 450-550 kg. Recently, Yangzhou City, Jiangsu Province, through the approval of species validation, and began mass production. The combination has strong heterosis, according to the 1984 test, the average advantage of 30.6%, super-advantage of 26.81%