1. When pruning mulberry trees in spring, it is necessary to cut off the xylem at the top of branches, which can reduce the consumption of water and nutrients, ensure the healthy growth of branches, ensure high cold resistance when growing in low temperature environment, and improve the germination rate and fruit yield in spring.

2. When the temperature rises slowly, the buds on the branches should be removed randomly to avoid the phenomenon that the plants grow too densely and too thinly. When this happens, it will not be conducive to the growth of mulberry lateral branches and the development of young buds, greatly reducing the speed and quality of fruit ripening.

3. The length of mulberry branches should be controlled in autumn to ensure the integrity, symmetry and natural umbrella shape of the tree. When the branch length is greater than 150 cm,13 of the branch length, preferably the incomplete xylem part, and 130 ~ 150 cm,16 of the branch length.

4. Mulberry can't be pruned on a large scale in winter, which will lead to the phenomenon that the wound can't be completely healed, and it is easy to be infected with germs and cause plant death. It is necessary to cut off rotten, withered, forked and insect-infested branches in time to reduce the harm of pests and diseases and avoid excessive loss of nutrients.