枯萎病又称蔓割病、萎蔫病，是西瓜最主要的病害，自苗期至伸蔓、结瓜期都可发病，以结瓜期为最重，一旦发病．轻则减产20％－50％，重则绝收，严重影响生产c随着复种指数提高，西瓜枯萎病发生越来越重。一、病害症状发病初期，中午气温升高时，从干部叶片开始，似失水状萎蔫， Fusarium also known as spore disease, wilt disease, is the most important watermelon disease, since the seedling to reach Man, melon can be the onset of disease, the most important period of fruiting, once the disease. Light cut 20% -50%, while the total income, seriously affecting the production of c With the multiple crop index increased, watermelon wilt disease more and more serious. First, the early onset of disease symptoms, noon temperature rise, starting from the leaves of cadres, it seems like watery wilting,