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甘藍蚜、桃蚜和棉蚜的有翅型与无翅型,均能传播大白菜病毒病,其中以甘藍蚜为最主要的传毒介体。一头带毒蚜可使80％的健苗发病;一头无毒蚜經吸毒一分钟的传病率为35％;健苗經一头有毒蚜传毒一分钟,就有10％发病。病毒系非持久性的,蚜虫一次吸毒后的传毒期限为25分钟左右。在烏魯木齐地区,有翅甘藍蚜全年中的迁飞高峯期,都是在7月下旬。証实了这时期与大白菜病毒病的流行,有极密切的关系。当年春、夏季播种的甘蓝和苤藍,尤其是晚甘蓝和晚苤蓝,是大白菜(包括冬蘿卜)苗期的初次毒源和蚜源。初步認为,能感染病毒的几种十字花科及藜科杂草,不是本病病毒和甘藍蚜的重要越夏寄主。
Cabbage aphids, peach aphids and cotton aphids winged and wingless, can spread cabbage virus disease, in which cabbage aphid as the main transmission mediator. A poisonous aphid can make 80% of the healthy seedlings disease; a non-toxic aphid by drug use for a minute the prevalence was 35%; health seedlings poisoned by a poisonous aphid a minute, there is a 10% incidence. The virus is non-persistent, and the duration of the poisoning of aphids after a drug addiction is about 25 minutes. In Urumqi, wintering cabbage aphid peak throughout the year, are in late July. Confirmed this period and the prevalence of cabbage virus disease, there is a very close relationship. The spring and summer sowing of cabbage and bluegrass, especially cabbage and eveninggreen blue, is the Chinese cabbage (including winter radish) seedling of the first virulent and aphid sources. It is initially believed that several cruciferous and Chenopodiaceae weeds that can infect the virus are not important hosts of the disease virus and cabbage aphid.