我区自1976年开始试种黎优57杂交水稻以来,种植面积迅速扩大,到1982年种植17.2万亩,占水稻面积的54.6%。单产1100斤(表1)。八一公社杂交稻种植面积最大,1981年占水稻面积的65%,1982年增加到80%,连续两年5万亩水稻单产保持1100斤以上。黎优57增产潜力很大,1981年三洪四队种植22.8亩,每亩平均实产1620斤,1982年丰收五队种植40.72亩,每亩平均实产1543斤,还有很多单产1300～1400斤的高产实例。生产实践证明,多种杂交稻,种好杂交稻,是继续提高我区水稻产量的重要途径。根据黎优57的品种特性和我区无霜期较短,热量资源较少的特点,制定了以抗寒防低 Since 1976, Liyou 57 hybrid rice has been planted in our district since its planting area expanded rapidly. By 1982, it had planted 172,000 mu, accounting for 54.6% of the total paddy area. Yield 1100 pounds (Table 1). Bayi commune hybrid rice planted the largest area in 1981 accounted for 65% of the rice area, increased to 80% in 1982, two consecutive 50000 acres of rice yield to maintain more than 1100 pounds. Liyou 57 has a great potential for increase in production. In 1981, three squat teams planted 22.8 mu in 1981, producing an average of 1620 kilos per acre. In 1982, the harvest of the five corps was 40.72 mu, producing an average of 1543 kilograms per acre. There were also many plots of 1300 to 1400 Kind of high yield example. Production practice has proved that a variety of hybrid rice, good hybrid rice is an important way to continue to improve rice yield in our region. According to the characteristics of Liyou 57 and our district frost-free period is shorter, less heat resources, developed a low-cold