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1技术原则选用高效、低毒、低残留农药。以预防为主,综合防治、绿色环保的植保防治原则。2田间调查分析我县严重影响打瓜的病害主要有枯萎病、疫霉病、炭疽病、白粉病、细菌性角斑病、病毒病。我县主要有的是枯萎病,白粉病.2.1枯萎病2.1.1症状该病害由半知菌镰刀菌属致病。打瓜播种出苗期可以引起烂种、烂芽和立枯病。幼苗生长期可以造成死苗,开花结果期间,早晨正常,下午萎蔫,青枯死亡。该
1 Technical principles Use efficient, low toxicity, low residual pesticides. To prevention, comprehensive prevention and control, green protection principles of plant protection. 2 Field Survey and Analysis My county seriously affect the fight melon diseases are wilt, Phytophthora, anthracnose, powdery mildew, bacterial angular leaf spot disease, viral disease. Fusarium wilt and powdery mildew are mainly found in our county .2.1 Fusarium Wilt 2.1.1 Symptoms The disease is caused by Fusarium spp. Fight melon planting seedling can cause rotten, rotten buds and blight. Seedling growth season can cause dead seedlings, the flowering period, normal morning, afternoon wilt, wither death. This