保护地韭菜在栽培中常常会发生叶尖子枯的现象，既影响商品的食用价值，又降低其经济效益。其发生原因及防治方法如下：1、病害引起的干尖韭菜灰霉病是引起韭菜干尖的主要病害，秋末冬初韭菜扣棚之后，由于棚内生态条件适合发病，只要有病源，病情就很容易流行。初染病时叶尖呈 Protective leeks often occur in the cultivation of leaf tip withered phenomenon, both affect the edible value of commodities, but also reduce their economic benefits. Its causes and prevention methods are as follows: 1, the disease caused by dry tip of Chinese cabbage gray mold is the main cause of leek stem tip, late autumn and winter leek buckle shed, due to shed ecological conditions suitable for the disease, as long as the source of illness Very popular. The first tip when the tip was presented