according to the growth characteristics of hazelnut, it can take the early trunk shape and the late open shape.

The main purpose of early plastic surgery is to enlarge the crown, increase the number of branches, and form a tree structure that can bear a certain yield, so as to lay the foundation for future results; Pruning is to adjust the relationship between growth and fruiting, and cultivate enough robust fruiting mother branches through pruning every year to lay the foundation for fruiting.

1. Strong branches and strong buds bear fruit.

The difference between hazelnut trees and other fruit trees is that most flower buds are formed on long branches, and the stronger the tree, the more flower buds there are. Therefore, the purpose of hazelnut pruning is to cultivate enough long branches every year.

2. Basal branch dominance.

naturally growing hazelnut trees tend to be shrub-like, mainly because the basal branches and lower branches have strong growth ability, which leads to weak apex. Therefore, in pruning, we should pay attention to raising the angle and thinning the branches to avoid restraining the former and promoting the latter.

3. Hazelnut sap flows early.

because of the early sap flow period of hazelnut tree, the pruning period should be earlier than other fruit trees. The best pruning period of fruit trees is before the sap flows in spring.

4. Corylus heterophylla has strong light preference.

Due to the strong photophobia of hazel tree, the branch density is too high, which is easy to cause the branch in the inner hall to die, and the bearing part moves outward.

5. Hazelnut trees are badly hurt.

when trimming, it should be noted that the number of large saw cuts should not be too much. The big branches that should be thinned should be carried out in a planned way in different years.