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通过在吐鲁番地区葡萄白粉病发病规律研究,摸清葡萄白粉病发病规律,明确病害流行的主导因素,进行高效低残留农药的筛选试验,为葡萄白粉病的防治提供技术保障。在定点对葡萄白粉病发病时间、发生规律、筛选药剂进行试验。结果表明,葡萄白粉病初期发病为6月开始发病,7月下旬和8月上旬发病达盛期,9—10月停止发病,其中三唑酮和甲基硫菌灵对葡萄白粉病防治效果较好。因此,加强葡萄防病栽培技术的应用,在葡萄白粉病发生初期采用三唑酮、多菌灵、甲基硫菌灵、多抗霉素等高效低毒农药进行统方统治,喷药3次,间隔7 d/次,可以有效控制葡萄白粉病。
Through the research on the pathogenesis of Gramineae powdery milky disease in Turpan, the author found out the rule of grape powdery mildew, identified the dominant factors of disease epidemic, carried out the screening test of high efficiency and low residue pesticides, and provided technical support for the prevention and control of grape powdery mildew. In the fixed-point of the incidence of grape powdery mildew, the occurrence of law, screening agents for testing. The results showed that the initial incidence of grape powdery mildew was onset in June, late July and early August reached its peak, and the incidence was stopped from September to October. Triadimefon and thiophanate-methyl were superior to grape powdery mildew control it is good. Therefore, to strengthen the application of grape cultivation techniques, grape powdery mildew in the early stages of the use of triadimefon, carbendazim, thiophanate-methyl, polymyxin and other high-effect low-toxicity pesticides for the common rule, spraying 3 times , Spaced 7 d / time, you can effectively control grape powdery mildew.