The summer is the period when the pear tree has the largest amount of vegetative growth and the fastest fruit development. It is also the period when the pear tree is most affected by the external conditions. In this season, the pears have higher requirements for fertilizer and water conditions, and they are prone to diseases and insect pests. The level of management and the quality of technical measures will have a major impact on the yield and quality of pear fruit. I. Soil and Fertilizer Water Management 1. Soil management. Summer temperatures are high, soil moisture is high, and pears are prone to weeds. Usually, weeds should be hoeed in time after heavy rain or after irrigation. Conditional orchards can be used to cover grass orchards, that is, after the wheat is harvested, wheat straw is used to cover the tree trays of the fruit trees. Each grassland covers 1,000 to 1,500 kilograms of grass, and the thickness of the grass cover is approximately 20 centimeters. Cover the grass with sporadic cover soil to prevent fire. 2. Fertilizer management. In late May to early June, flower buds were topdressed with a special application of phosphorus and potassium, supplemented with nitrogen as a special fertilizer for fruit trees. The strain applied 1 to 1.5 kilograms and was immediately watered after fertilization. Can also be sprayed on the tree 1 to 2 times amino acid compound fertilizer. In July, after the early maturing varieties were harvested, a quick-release nitrogen fertilizer was applied immediately to supplement the nutrition of the resulting tree. For late-maturing varieties, phosphorus and potash fertilizers should be topdressed at this time. After the fruit is harvested, it is generally followed by a quick-acting nitrogen fertilizer. Pest control 1. Pear locust. It is mainly to spray medicine on trees. (1) May spray 10% imidacloprid wettable powder 5000 times liquid or 25% enemy kill 2500 times liquid, 20% cypermethrin 2500 times liquid. (2) Protection and introduction of natural enemies, such as ladybugs, grasshoppers, and flies. 2. Pear borer. (1) In the orchard, black light or hanging sweet and sour cans are used to trap adult insects. The proportion of sweet and sour liquid is 5 parts of brown sugar, 5 parts of wine, 20 parts of vinegar and 70 parts of water. (2) Trapping with sex traps. Generally, 15 individual traps are hung per acre. When the density of insects is high, it is necessary to spray the long-term special insecticide and then hang it. (3) In the peak period of adulthood, the drug can be used in a timely manner. The agent can be used with 5% A. verrucite 5,000 times, or 25% of mothcism 3000 times. 3. Pear scab. (1) Strengthen cultivation management and increase organic fertilizer to increase tree vigor and improve disease resistance of trees. (2) Spray pesticides in time according to pear condition and rainfall. The first general spraying was in mid-May (the initial stage of disease), the second in mid-June, the third time in late June to early July, and the fourth time in early August. The available agents are 1:2:200 times Bordeaux fluid, 50% carbendazim wettable powder 800 times, 50% thiophanate-methyl 800 times. Second, the purpose of summer pruning summer shear is to control the tree vigor growth, promote flowering, improve ventilation and light conditions. 1. Normal result tree. Strictly control the back branches of the backbone branches and peripheral dense branches and Wang shoots. Comprehensive application of topping, folding, thinning, pulling branches and other methods. In order to promote flowers, the main lateral branches of the saplings and the rearing branches may be cut. 2. Prosperous fruitless or less fruit trees. To strengthen the promotion of flowers, the main use of pull branches, topping, ring cutting and thinning techniques. In particular, the main branch should be pulled apart so that the main branch's waist angle can be increased by 50 degrees to ease the tree potential, increase light, and promote flowering. Bagging At present, pear pest control fruit bags are divided into single-layer bags and double-layer bags. Using a single-layer bag, the result of the fruit recovery and bag unfolding is pale green, and it turns bright yellow after storage, and it is suitable for green varieties with lighter fruit spots, easily peeled skin and easily discolored after picking. Using a double-layered bag, the fruit is light yellow or white in appearance, suitable for large and deep fruit spots, and with a brownish brown variety. Sacking is generally performed 25 to 50 days after flowering. Generally, bagging should be completed before the beginning of June. In order to prevent pests from invading fruit after bagging, insecticides and pesticides should be sprayed 5 to 7 days before bagging. Usually 70% thiophanate-methyl 800 times plus 20% of 10% cypermethrin or 4% avermectin 4000 times spray. If the bagging work is still not completed after 10 days of spraying, the unspoken tree should be sprayed again.