黄瓜疫病俗称死秧或死藤,是一种严重危害和难以控制的病害。无论是露地或保护地黄瓜受害都比较严重。温室、大棚温湿度管理不善,或露地夏、秋黄瓜浇灌过量,常造成大面积死秧、烂瓜。一、发病症状可为害茎叶任何部位及果实,幼苗期到成株期都可以染病。幼苗染病,开始在嫩尖上出现暗绿色、水浸状腐烂。成株期主要危害茎基部、嫩茎节部,开始为暗绿色水浸状,以后变软,明显缢缩变细,发病 Cucumber blight commonly known as dead seedlings or dead vine, is a serious hazard and difficult to control the disease. Whether it is exposed or protected cucumbers are more serious victims. Greenhouse, greenhouse temperature and humidity management is poor, or open summer, autumn cucumber excessive watering, often resulting in a large area of ​​dead seedlings, rotten melon. First, the symptoms can be harmful to any part of the stems and leaves and fruits, seedlings to adult stage can be infected. Seedlings infected, began to appear on the tender tip dark green, water-like decay. The adult plant mainly endanger the stem base, tender stem section, began to dark green flooding, later softened, conspicuously shrunken, the incidence