The management of cherry trees in summer mainly includes the following three points: pest control. Diseases and insect pests will do harm to the overall growth of cherry trees, lead to tree weakness, and then affect the yield of cherry. The diseases of cherry trees mainly include gummosis, bacterial perforation, brown spot and early defoliation. The main pests are red spiders, scale insects, red-headed beetles, spider mites, leaf rollers and so on. Control methods of main diseases of cherry trees: bacterial perforation damages cherry leaves, which usually occurs in the middle and late May. Drought develops slowly in summer, and infection often breaks out in rainy season, resulting in a large number of cherry leaves falling off. Chemical control: In addition to spraying 5 times of Bordeaux mixture or 1: 1: 100 times before cherry germination, spraying 1: 2: 200 ~ 400 times of Bordeaux mixture or 0.2 ~ 0.3 times of Bordeaux mixture before rainy season. Spraying once every 15 ~ 20 days, and spraying continuously for 2 ~ 3 times. It can be used alternately with 800 ~ 1000 times of 50% chlorpheniramine wettable powder or 800 times of 70% thiophanate-methyl wettable powder after rain.

Control method of main pests in cherry: mites can spray 20% pyridaben EC 2000 times. Caterpillar and leaf roller can be sprayed with 2.5% beta-cypermethrin EC 1500 times, or 20% deltamethrin EC/3,000 times and 2.5% deltamethrin EC/2,500 ~ 3,000 times, or 25% diflubenzuron SC 1000 times. Summer pruning. The main goal of pruning cherry trees in summer is to cultivate high-yield tree types, and comprehensively use methods such as pulling branches, twisting branches, cutting short, slowly releasing and retracting, engraving buds, and removing stones. Adjust the angles of backbone branches and upper branches of backbone branches, adjust the distribution of organic nutrients, balance tree nutrition, coordinate the relationship between tree growth and fruiting, improve the ventilation and light transmission conditions of trees, and increase the number of fruiting branches.

In the physiological differentiation stage of cherry flower buds, summer pruning can balance the tree potential, promote the transformation from vegetative growth to reproductive growth, and promote the differentiation of flower buds and the formation of fruiting branches. Water and fertilizer management. It is suggested to apply about 4 kg of bio-organic fertilizer or 50 kg of decomposed farmyard manure to top-dressing the big cherry after harvest, and water it in time after fertilization. At the same time, 0.3% urea, potassium dihydrogen phosphate and medium and trace element fertilizer are added when spraying, which effectively promotes flower bud differentiation.