大量的生产实践证明:杂种优势利用是提高农作物产量的重要途径之一,特别是玉米、高粱等杂交种的推广,进一步推动了其它作物杂种优势利用研究。四川农科院在白菜型油菜雄性不育杂种的研究方面取得了一定的进展,目前,不少单位正在开展甘兰型油菜杂种优势利用的研究工作,为了配合甘兰型油菜杂种优势利用的研究,我们在毛主席无产阶级教育革 A large number of production practices have proved that the utilization of heterosis is one of the important ways to increase the yield of crops, especially the popularization of hybrid maize and sorghum and further promote the utilization of heterosis in other crops. Sichuan Academy of Agricultural Sciences has made some progress in the study of male sterile hybrids of Brassica campestris. At present, quite a few units are carrying out research on heterosis utilization of Brassica napus. In order to cooperate with the utilization of heterosis in Brassica napus We are Chairman Mao proletarian education leather