1. Winter pruning: generally, winter pruning is carried out after fruit harvesting and tree growth recovery. It mainly carries out coping and windowing treatment on the crown that is too high and too dense, pruning overlapping branches, and pruning pests, weak branches, decayed branches and dead branches. 2. Pruning in summer: Pruning in summer is generally carried out about 8- 10 days before the release of autumn shoots (if the fruit trees are weak, the pruning time should be 5-7 days in advance). The retraction method is mainly used to cut off weak branches and old branches, weak fiber branches and pests.

First, the time and method of citrus pruning

1, winter scissors

(1) Pruning of citrus trees in winter is generally carried out after fruit harvesting and tree vigor recovery. Pruning objects are mainly fruit trees after harvest, and young trees and frozen trees are generally not pruned or less pruned.

(2) Pruning citrus trees in winter mainly deals with coping and opening windows for the crown that is too high and too dense, and cuts off overlapping branches. In addition, it also needs to cut off diseases, insects, weak branches, rotten branches and dead branches. If it is a mid-late maturing variety, it is necessary to cut off fruit branches, long branches and riding branches.

2. Summer scissors

(1) Pruning of citrus trees in summer is usually carried out about 8- 10 days before the release of autumn shoots, because the temperature at this time is very suitable and the physiological functions of the trees are active, and a large number of strong autumn shoots can be pulled out about 7- 10 days after pruning. If it is a weak fruit tree, the pruning time is 5-7 days in advance.

(2) Pruning of citrus trees in summer is generally combined with pruning of big branches to reshape the crown. Retraction is mainly used to cut off the tips of weak branches and old branches, and to cut off weak fiber branches and diseased branches.

(3) If it is a fruit tree with a large amount of fruit, the fruiting mother branches and fruit branches with less leaves are generally cut short. If it is a fruit tree with a small amount of fruit, the thick spring shoots around the crown are generally cut by one third and the summer shoots by one fifth.

Second, the six taboos of citrus pruning

1 to avoid uneven pruning. In the process of pruning citrus trees, only balanced and symmetrical pruning can keep the fruit trees in a robust growth trend and achieve the purpose of increasing production.

2. Avoid stubble. In the process of pruning, leaving oblique stubble on citrus trees will increase the difficulty of fruit tree recovery, resulting in a large number of fruit trees losing water. Once it encounters rainy weather for a long time, the pruning place is easy to be infected and rotted.

3. Avoid not turning on the lighting route. After pruning citrus trees, it is necessary to ensure that light can shine into the crown to meet the lighting needs of the inner and lower branches.

4. Avoid untimely disinfection. After pruning citrus trees, the pruning place should be disinfected in time, and the cut branches should be taken out of the orchard for centralized treatment.

5, avoid not combining the tree potential. In the process of pruning citrus trees, it is necessary to determine the pruning degree according to the growth of fruit trees. If it is a robust fruit tree, cut it again properly. If it is a weak fruit tree, cut it less or not.

6. Avoid not strengthening management. After pruning fruit trees, water and fertilizer management should be strengthened to promote wound healing.