大葱干尖已成为大葱优质高产的一大障碍,常造成品质下降、产量降低,直接影响菜农的经济效益。了解造成大葱干尖的种类,采取针对性防治方法十分重要。1灰霉病和霜霉病引起的干尖1.1症状由灰霉病引起的干尖,初在叶上生白色斑点,多由叶尖向下发展, Onion dry tip has become a green onion high yield and quality of a major obstacle, often resulting in decreased quality, lower yields, a direct impact on farmers economic benefits. To understand the types of dried onions caused by green onions, take targeted control methods is very important. 1 gray mold and downy mildew caused by dry tip 1.1 symptoms caused by gray mold dry tip, the beginning of white leaf spot on the students, mostly from the tip down development,