First, spring pruning

1. Branching thinning: For navel orange trees with too many strong branches in autumn shoots of the whole fruit tree, thinning, overlapping and dense branches, thinning some strong branches and thinning some weak branches to ensure the balance of tree potential. Sparse some slender branches and weak branches of weak trees, reduce nutrient consumption and restore tree vigor. Sparse inner chambers and long branches that have no room to develop or affect the balance of trees.

2. Retraction: Retract drooping branches, improve the position of bottom branches, retract "cluster branches" and "broom branches", reduce invalid flower branches and enhance tree potential.

Second, pruning in late spring

Trees with too many shrinking flowers remove some flower branches, and trees with too few sparse flowers remove too many spring shoots to ensure the balance between reproductive growth and vegetative growth.

Third, summer pruning

Erase the summer buds and put the autumn buds uniformly. In the middle and late July, the strong branches that have been smoothed for many times can be thinned, leaving strong branches with short pruning heads. Weak trees with a small number of strong branches can retract some strong flowers and strong fruit branches, promote strong autumn shoots, and release them in early and middle August in combination with rainfall.

Fourth, trim the big branches.

Pruning large branches is mainly a method of pruning navel orange trees that have not been pruned for many years or have insufficient labor and good moisture. The specific approach is:

1, thinning or retracting the drooping branches with too low position;

2. Drain the 1-2 trunk branches in the upper part of the crown, so that light can enter the tree;

3. If the crown is high, the side of the crown is closed and the light is poor, you can sparse 1-2 branches (side branches or large branches) on both sides to let the light enter the crown.