黄瓜枯萎病又叫萎蔫病、蔓割病、抹脖子,主要为害黄瓜。该病由于具有发病快、病害重、传播迅速等特点,一旦发生常引起全株枯死,因而能造成绝产,经济损失巨大。该病在温室和大棚黄瓜栽培中为害最为严重。因此,认识及预防黄瓜枯萎病的发生具有重要的意义。1 病害症状该病症状特点主要是叶片急性凋萎和导管变色,在黄瓜苗期及成株后均有发生。苗期病菌先侵染子叶,使其萎蔫,然后侵染茎基部,使其呈黄褐色水渍状软腐, Cucumber wilt disease, also known as wilt disease, vine cut disease, wiping the neck, the main damage cucumber. The disease has the characteristics of quick onset, heavy disease and rapid spread. Once the disease has caused the whole plant to die, it can cause junk and huge economic losses. The disease in greenhouse and greenhouse cucumber cultivation is the most serious. Therefore, to recognize and prevent the occurrence of cucumber wilt disease is of great significance. 1 disease symptoms The symptoms are characterized by acute leaf wilting and catheter discoloration, both in cucumber seedling and adult have occurred. Seedling bacteria invade the cotyledons first, making it wilting, and then infiltrating the base of the stem, making it yellow brown water-like soft rot,