1. Strengthen orchard management. During grape growth, pay attention to orchard drainage, timely topping, cutting sub-tips, strengthen ventilation and light transmission, reduce the humidity of orchards, and increase the organic fertilizer properly to promote the tree vigor to grow robustly and improve the disease resistance of plants to reduce the disease. occur.
2. Insist on the use of protective agents before the onset of disease prevention. Before the onset of the disease, Bordor's solution, mancozeb, and other protective agents can be used to prevent and timely spray the new high-fat membrane 800 times, which can prevent the virus infection of the leaves, enhance the lush foliage, photosynthetic product accumulation and directional transport.
3.Discover the lesions in time with the epidemic spot 3000 times liquid plus a new high-fat membrane 800 times liquid treatment, when the disease is heavy with good Lectra 3000 times plus a new high-fat membrane 800 times spray, continuous use 2-3 times, the key spray cloth The middle and lower blades work well.
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