Answer: Prevention and control methods: 1. Agricultural control. Timely cultivating and weeding grass, removing dense branches, and enhancing air and light transmission. After defoliating, clean the orchard and remove fallen leaves. 2. Chemical control. Focus on the protection of spring shoots, according to the rainfall, spraying from 10 to 15 days after flowering, spray 3 to 5 times, each interval of 15 to 20 days. The agents with better effects are: 40% Fuxing 4000-6000 times, 43% tebuconazole 4000 times, and Shigao (Bimimetazole) 1500 times.
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