近几年来,在湖北省选育和推广了许多油菜优良品种,对促进油菜生产起了重要作用。但是,由于林彪一伙反革命修正主义路线的干扰,有些地区良种提纯复壮工作跟不上去,致使良种混杂退化,甚至有的失去了原品种的典型特征特性。例如,有的地区“胜利油菜”田间纯度已降至60％,形态多种多样,生育性状参差不齐,产量和品质下降,已失去良种的作用。因此,必须重视油菜良种的混杂退化问题,加强对种子工作的领导,做好油菜良种的提纯复壮。确定当家品种坚持年年选种留种各种优良品种都有它的区域适应性。遵照毛主席 In recent years, many excellent varieties of rapeseed have been bred and popularized in Hubei Province, which play an important role in promoting rapeseed production. However, due to the interference of Lin Biao and a group of counterrevolutionary revisionist parties, the work of purifying and rejuvenating elite seeds in some areas can not keep up. As a result, the hybrids have been degraded and even the typical characteristics of the original breeds have been lost. For example, in some areas, the purity of “Shengli Rapeseed” has been reduced to 60% in the field with a variety of forms, uneven reproductive characteristics, declining yield and quality, and the loss of good seeds. Therefore, we must attach importance to the hybrid rapeseed degeneration, strengthen the leadership of the seed work, do a good job of rapeseed purification. Determine the type of species persist year after year to choose species to stay species of all varieties have its regional adaptability. Follow Chairman Mao