1. Choose high-quality varieties with strong disease resistance, such as "Kangtai" grape varieties, which are not only cold resistant, but also resistant to downy mildew and powdery mildew.

2. Disease control: Spray control should be carried out at the initial stage of the disease, and the medicament can be 500 times of dijunling wettable powder, 600 times of thiophanate-methyl wettable powder and 800 times of carbendazim wettable powder. According to the condition, the patients were treated once every 7 ~ 10 day and 2 ~ 5 times.

3, combined with bagging to prevent rotten fruit. Bagging grape fruit can reduce the harm of pests and diseases, and reduce fruit cracking and rot. Bagging should be done immediately after ear shaping, and bactericidal pesticides should be sprayed once before bagging.

4, combined with summer pruning to prevent rotten fruit: summer pruning should be carried out in time, remove too many dense branches and long branches, and carefully prune and top the fruiting branches to prevent imbalance between vegetative growth and reproductive growth.

5, combined with soil testing formula, scientific fertilization to prevent rotten fruit: generally apply farmyard manure in autumn. According to the results of soil testing, chemical fertilizer and bio-organic fertilizer were added in the spring and summer of the next year, which made the soil rich in organic matter, loose and fertile, and more suitable for root growth and development.