1, young mango trees are mainly applied with nitrogen and phosphorus fertilizers, and appropriate potassium fertilizers are applied. The general mixing ratio is 1: 2: 1. After mango is planted, it is fertilized once a month, and urea 100g or compound fertilizer150g is applied to each plant, but it is furrow fertilization. Results Fertilization types, dosage and fertilization period were different between trees and young trees.

2. After the young mango trees are trimmed, when the height of the seedlings is 80-90 cm, they begin to be trimmed. The pruning steps of young trees are: fixing the trunk, cultivating the main branch, cultivating the auxiliary main branch and adding the auxiliary branch. In order to lay a good tree structure in the future and maintain the rationality of the crown. Results Short pruning and thinning were the main pruning methods. Before flower bud differentiation, pruning and dewatering methods are adopted to remove over-dense branches, weak branches in shade, branches with diseases and insect pests, cross branches, overlapping branches and over-flourishing branches, so as to increase the light transmittance of the crown and promote flower bud differentiation.

3. Flowers should be thinned in time, and early flowers should be picked. Each mango should keep 70% of the terminal buds, and other inflorescences should be removed from the base. You can also cut off the flower branches at the base of the inflorescence. The flowering period of mango is earlier than that of common fruits, and the flowering period of mango is1-February. When mango flower buds begin to differentiate into buds, potassium fertilizer should be applied mainly. By spraying chemicals, the flower bud differentiation time can be advanced to10-1month of last year. In September, flower-promoting fertilizer can be applied, mainly potassium fertilizer. It can also be sprayed evenly on leaves and leaf backs by topdressing outside the roots to promote flowering.

4. Fruit hanging management When the fruit begins to swell, the fruit is hung up, the drooping branches are propped up with bamboo poles or pulled up with ropes, so that the fruit leaves the ground and the fruit is distributed as evenly as possible on the crown.

5, fruit bagging after the second physiological fruit drop, a comprehensive fruit thinning work, before bagging, fully spray 1 times of pesticides and fungicides, chemicals should be sprayed on the fruit, after the liquid medicine is dry, cover the fruit with a special paper bag for mango and tie the bag mouth tightly.