5～6月正值西瓜开花座果盛期,也是长江中下游地区西瓜枯萎病发生最严重的季节。枯萎病的发生造成西瓜减产,甚至绝收。因此,必须掌握枯萎病的发病规律,采取相应的综合防治措施。 1.危害症状 西瓜整个生育期都会发病,但结瓜期和西瓜膨大后期为发病高峰期,幼苗发病时幼 May to June is the peak watermelon flowering period, but also the middle and lower reaches of the Yangtze River watermelon Fusarium wilt occurs the most serious season. Fusarium wilt caused the production of watermelon, or even income. Therefore, we must master the incidence of Fusarium wilt disease, take the appropriate comprehensive prevention and control measures. 1. Harmful symptoms Watermelon throughout the growing period of disease will occur, but the fruiting period and watermelon swollen late peak incidence, the incidence of young seedlings