Litchi bagging integrated fruit protection technology is a technology that has been popularized in the litchi production in our province in recent years. Over the years, we have carried out bagging and fruit preservation on sorghum litchi, which has been effective. The main points are summarized below. 1, cultivate healthy spikes. In order to reduce costs and improve efficiency, it is necessary to cultivate healthy spikes. Robust fruit spikes are fruit spikes with robust results, moderate numbers of fruits, and relatively compact fruits. Mainly adopt the following methods to cultivate healthy spikes: (1) After picking fruit, timely fertilize, reasonably pruning, and prevent and control pests, cultivate 2-3 times of robust autumn shoots, where only one shoot is left for the last shoot, making it become robust. Result mother branch. In the middle and late 211 months, when the last shoot was old, the ring cut the winter shoots. When the spikes were 2-4 cm long, the large branches were subjected to spiral girdling (circumcision 1-1.5 laps, stripping mouth width of about 0.2 cm, and the pitch is about the diameter of the girdling branches), which promoted the formation of short spikes. 3 For each mother branch, only one short and strong spike is left, and all the others are removed. When the flower ear grows to more than 12 centimeters, a short cut of about 10 centimeters (with 3-5 lateral spikes per flower spike) is reserved. 4 Through the series of measures such as bee pollination, artificial pollination, and fly pollination, the fertilization of female flowers is good. 5 The tree with unfavorable fruit setting, timely shaking off residual flowers, applying water and fertilizer in time when drought, spraying organic leaf fertilizer, and promoting regeneration of flowers (fruit growers are also known as pan-flowers), so that fruit set. 2, bagging operation. 1 bagging material: Litchi special fruit bag made of non-woven fabric. When the bagging period is about 20 days after the female flower has been fetched, the bagging starts when the size of the young fruit is divided and the color of the small fruit is changed from yellowish green to cyan. 2 Remove the dead leaves on the leaves that are too large, too small, pests and fruits, and preserve the fruits of relatively uniform size. Spraying a mixture of insecticidal bactericide and foliar fertilizer, available 25% of insecticidal double 500 times +90% of trichlorfon 800 times +58% of thiram Mn-Zn 600 times +0.3% of urea +0.3% of dihydrogen phosphate Potassium. Then, cover the entire ear with a bag of preserved fruit and tie it tightly. When the fruit is mature and harvested, the fruit bag should be taken off together with the ear, and the fruit bag should be removed and used again for the next time. 3 According to the speed of bagging, spraying in batches in a planned manner and in batches, the liquid medicine should be bagged as soon as possible after drying, and the plants that have not been finished within 5 days should be sprayed and then bagged. 4 Do not put the leaves or branches into the bag when bagging; ensure that the bag is fully opened and the inner wall of the bag is separated from the small fruit; in the process of fruit development, if the bag is damaged, it must be replaced immediately. 3. Strengthen the management of fertilizer and water in fruit trees during fruiting period. After bagging, the fruit set-up rate is increased, and the fruit is relatively large. If the supply of fertilizer and water is insufficient, the fruit is small and the commodity value is reduced, so the supply of fertilizer and water must be strengthened. It is advisable to apply the decomposed bran water when the flower spikes are about 4 cm or so, and then apply it every other month or so until it is harvested. At the same time, once every 7-10 days spray foliar fertilizer (green Wang k, potassium dihydrogen phosphate, etc.). 4, to prevent bat harm. When the fruit is nearly mature, the bat will bite and protect the fruit. In severe cases, the whole lychee tree's preserved fruit bag was bitten and the fruit was bitten. Preventive measures: 1 Regular inspection, found that the rupture of fruit bags, timely replacement. 2 Nylon screens were hung around the orchard and within a certain distance from the park. When the bats flew into the mesh, they were caught in the wire and could not escape. 3 Using the bat’s habit of being afraid of light, combined with hunting and killing insect pests such as Helicoverpa zea, the electronic moth killing lamp is used to illuminate the tree top at night to drive off bats.