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我省的粳型杂交水稻自一九七五年三系配套以来,经过三年时间的试种,收到了较好的效果,一般亩产较常规品种增加百斤左右,有些地方甚至高达2—3百斤。今年全省已发展40多万亩。各生产单位普遍反映杂交水稻生理机能旺盛、光能利用率高、穗大粒多等特点,构成了明显的杂种优势。但目前应用的杂交水稻也存在着结实率偏低、抗病性较差、生育期长等缺点。为了进一步发挥杂交水稻的增产作用,积极选育理想组合是三系育种的重要任务。我们认为今后的选育工作应在早
Japonica hybrid rice in our province has received good results after three years of mating in 1975 after three years of mating. Generally, the yield per mu is about 100% more than the conventional varieties, and in some places up to 2- 3 pounds. This year the province has developed more than 40 million mu. The production units generally reflect the physiological functions of hybrid rice, light utilization, high spike large grain and other characteristics, constitute a clear heterosis. However, there are some shortcomings such as low seed setting rate, poor disease resistance and long growth period of hybrid rice. In order to further enhance the yield-increasing effect of hybrid rice, it is an important task of three-line breeding to actively select the ideal combination. We think breeding work should be early in the future