甘蓝是山西省晋中蔬菜主要栽培种类之一。年种植面积10万hm2左右,仅寿阳县的旱垣甘蓝就占到全市的50%,成为当地种植业结构调整和农民增收的新亮点。但是,随着面积的扩大以及连作,甘蓝黄叶病随之发现,并呈逐年加重趋势。一般地块发病率15%～20%,连作3年以上的地块可达50%,减产幅 Cabbage is one of the main cultivated vegetables in Shanxi Jinzhong. Annual planting area of ​​about 100,000 hm2, only Shouyang County accounted for 50% of the city’s cabbage, becoming a new highlight of the local planting structure adjustment and peasant income. However, with the expansion of the area and continuous cropping, yellow leaf disease of cabbage was discovered subsequently, and showed a trend of increasing year by year. The general block incidence of 15% to 20%, even for more than 3 years of land up to 50%, cut