How to preserve the fruit of longan trees?

How to preserve the fruit of longan trees? What do longan trees need to pay attention to? Netizens with longan planting experience are also invited to help introduce that because the physiological fruit drop will occur in the whole process of longan fruit development, the physiological fruit drop height of longan tree can reach more than 50% of the total fruit number, so the planting network has sorted out the methods of longan tree fruit protection. the following detailed lists are listed for netizens' reference. The period and reason of longan fruit drop: the first fruit drop of longan was 14 days after female flower fade, and the young fruit began to merge into small and large fruits, which was mainly caused by poor pollination and fertilization. The second fruit drop of longan is 35 ~ 40 days after female flower fade, which coincides with the rapid development of seed embryo and the growth and decline of new and old nutrition organs in the fruit. The reason for fruit drop is due to the imbalance of nutrition and endogenous hormones caused by the disintegration of nucellus cells and endosperm. The third fruit drop of longan is about 75 days after the female flower fade. The reason is that the fruit drop is in the stage of rapid development of longan pulp and needs to consume a lot of nutrition. if the fruit is large and the tree is weak, the fruit drop in this period will be more serious. Longan fruit preservation method: method 1. Timely ear thinning is one of the conventional measures for longan fruit protection when there are a large number of female flowers and hanging fruit. If less than 70 grains per panicle after the first peak of physiological fruit drop and less than 50 grains per panicle after the peak of the second physiological fruit drop, there is no need to harvest and thinning fruit.  method 2. After the end of the first physiological fruit drop, the fruit trees should be replenished in time. Generally, before the peak of the third physiological fruit drop, soil fertilizer can be applied for 2 times. It is better to apply rotten bran water and fertilizer, and compound fertilizer or phosphorus and potassium fertilizer can also be applied. At the same time, in the whole process of longan fruit development, extra-root topdressing should be carried out every half a month, and foliar fertilization can be combined with disease and insect control.  method 3. Compound fruit protectants such as "Guoteling No. 1", "Litchi fruit protectant" and "Lilongbao" can effectively fill the nutritional consumption and maintain the balance of endogenous hormones during longan fruit development, and significantly reduce fruit drop during the second and third physiological stages.  method 4, in case of dry weather, it is necessary to irrigate the soil and spray clear water on the crown, especially in the middle and later stages when the fruit grows the fastest after the pulp grows, the demand for water is greater. Method 5. For example, young longan trees and young fruit trees can be cut and bound around to protect fruit, which can be carried out after the female flowers have withered, but it is not suitable in areas with dry climate or insufficient water resources. Scientific planting method of  longan tree control method of longan gall mite