大白菜是塔里木垦区冬、春季主要蔬菜。白菜霜霉病[PeronosPora Parasitica(Pers)Fr]是大白菜的重要病害,每年因此病减产1—3成,大流行时还可导致大面积失收。 多年来,我们通过逐年观察,对此病流行规律的认识不断加深,并通过试验,选出适合本垦区的农药品种和防治方法,在大面积应用中,取得了良好效果。 Chinese cabbage is Tarim reclamation winter and spring main vegetables. Cabbage downy mildew [PeronosPora Parasitica (Pers) Fr] is an important disease of Chinese cabbage, resulting in 1-3% annual reduction of disease, but also lead to large-scale loss during a pandemic. Over the years, through our annual observation, we have deepened our understanding of the epidemic laws and passed tests to select pesticide varieties and control methods that are suitable for the reclamation area. We have achieved good results in large-scale applications.