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韭菜灰霉病又称白色斑点病,是冬春保护地韭菜的主要病害。主要在叶正面或背面生成灰褐或白色小斑点,由叶尖向下发展,斑点扩大后呈菱形或椭圆形,逐渐连片,直到叶尖端5-6厘米全部枯干。湿度大时,表面密生灰色或灰褐色的绒生状霉层。该病大多在春节前后收获第二刀后严重发生。轻则减产20-30%,重则减产50%以上,病叶伴有霉味,品质下降。一、发生原因韭菜灰霉病的发生与栽培条
Leek botrytis, also known as white spot disease, is the main disease of chives in winter and spring protection. Mainly in the leaf front or back to generate gray brown or white spots, the downward development of the tip, the spot is enlarged diamond or oval, gradually contiguous, until the tip of the tip all 5-6 cm dry. Humidity, surface dense gray or taupe velvet layer moldy layer. Most of the disease was harvested before and after the Spring Festival, the second knife occurred seriously. Reducing the production by 20-30%, while reducing the production by more than 50%, the diseased leaves accompanied by musty, the quality declines. First, the occurrence of chives gray mold occurrence and cultivation