韭菜发霉病又称白色斑点病，是冬春扣棚韭菜的主要病害。1．症状韭菜发生灰霉病，叶正面或叶背面最初生成浅灰褐或白色小斑点，由叶尖向下发展．斑点扩大后成椭圆形或棱形，病班相互融合成大片，致使韭叶干枯。湿度大时，表面密生灰褐色霉层。病叶有时也不产生白点．而由收获对 Leek moldy, also known as white spot disease, is the main disease chives spring and winter buckle shed. 1. Symptoms of chives gray mold disease, the leaf front or the back of the leaf initially generated light gray or white spots, the downward development of the tip. Spots expanded into an oval or prism, disease classes merge into large pieces, resulting in dry leaves leek. Humidity, surface gray-brown moldy layer. Sick leaves sometimes do not produce white spots. By harvest