筑优五—2(筑紫晴A/反五—2)是我校水稻杂种优势利用课题组,于1982年育成的杂交晚粳组合。1983年和1984年在南方稻区单季杂交粳稻区域试验中,分别比对照鄂宜105增产11.9%和17.2%,两年平均折合亩产486.3公斤,比对照鄂宜105增产14.6%。1985和1986年在湖北省杂交粳稻单季晚稻区试中,分别比对照鄂宜105增产15.0%和9.8%,两年平均折合亩产560.2公斤,比对照鄂宜105增产12.4%。 Construction U-2 (Tsui purple A / anti-five -2) is our school rice heterosis utilization research group, bred in 1982 hybrid late japonica rice combination. In 1983 and 1984, the single cropping japonica rice trial in the southern rice area increased 11.9% and 17.2% respectively compared with the control Eyi 105, and the average yield per mu in two years was 486.3 kg and 14.6% higher than that of the control E-105. Compared with the control E-105 in 1985 and 1986, the yield of hybrid japonica rice in Hubei Province was 15.0% and 9.8%, respectively. The average yield per acre was 560.2 kg in two years and 12.4% higher than that of the control E-105.