1. Fruit farmers must not blindly prune fruit trees, but should follow the three principles of "pruning by trees, shaping by branches, making overall plans, combining length with length, giving priority to lightness and combining lightness with lightness". Among them, "pruning by trees and shaping by branches" means pruning by combining the initial tree requirements of the orchard with the specific conditions of different plants, so as to achieve a tangible and immortal situation; "Overall consideration and combination of length and length" means that all factors such as plants and fruits should be taken into account when pruning fruit trees. Pruning should take a long-term view, so you don't have to save time and labor. Instead, young trees are pruned mainly to promote growth and shaping, while fruit trees are pruned mainly to grow and bear fruit. "Give priority to light and combine light with light" means that when pruning, especially when pruning young trees, the pruning amount should be reduced to avoid the phenomenon of plant growth inhibition caused by excessive pruning.

For most fruit trees, pruning is usually carried out in winter and summer of the year. According to phenology, it is pruning in dormancy and pruning in growth. Among them, pruning in dormant period is mainly to cut off or shorten some unnecessary branches, residual diseased branches and dead branches on the tree, and at the same time, select backbone branches, central branches, main branches and auxiliary main branches in order to make plans for establishing high-yield trees. Pruning in growth period is mainly to inhibit the excessive growth of new shoots, promote the formation of flower buds, improve the ventilation and light transmission conditions of trees, improve the utilization efficiency of light and bear high-quality fruits.

3. Fruit farmers should observe the growth of trees as a whole when pruning, and then follow the principles of top-down, outside-in, and coarse-to-fine. Don't directly see the fruit trees, regardless of the basic growth of fruit trees and the needs of tree body shaping, only meet the needs of ventilation and light transmission, which will easily lead to the disorder of orchard trees and seriously affect the field management in the later period.

4. After pruning, the wound should be smeared with Bordeaux solution, sulfur mixed stock solution or 0.0 1%-0. 1% naphthylacetic acid in time to avoid wound infection and bacterial invasion, which will have adverse effects on tree growth and even yield. If this operation is not handled properly or is not carried out at all, it is easy to cause xylem rot, transport tissue destruction, abnormal water and nutrient transport, weak growth, and even death due to poor wound healing.

5. Fruit farmers should first disinfect pruning tools such as branch shears and hand saws when pruning; After pruning, the remaining branches should be taken out of the orchard in time, especially those infected with diseases, and then buried or burned in appropriate places.