Strengthen field management, keep air and light in the park, cut off branches near the ground, reduce moisture and mutual sickness. Breeding disease-resistant and insect-resistant varieties, and attention should be paid to cultivating disease-resistant varieties. Combine pruning, remove diseased branches and diseased fruit, and reduce the initial source of infusion.
Spray 3 to 5 times of Baume degree lime sulfur before germination, spray Bordeaux mixture for 1 to 3 times in growth phase, or spray 50% thiophanate-methyl wettable powder 800 times; spray 0.4% copper oxalate, spray multiple times ( Once in half a month, good results can also be achieved.
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