There are two kinds of jujube pruning, winter pruning and summer pruning. Winter pruning is generally carried out in the dormant period, and the best pruning time is in early spring. Summer felling is generally carried out in May-June in the north, and may be advanced in the south. Whether in winter or summer, the pruning methods of jujube trees mainly include thinning branches, retracting, cutting short, smearing buds and removing stones. The following is a detailed introduction.

1. refinement

Thinning refers to thinning branches that are too dense, mainly cross branches, overlapping branches, drooping branches and diseases and insect pests. The purpose is to reduce the excessive consumption of nutrients in the tree, improve the ventilation and light transmittance of the crown, promote the growth of the plant and make it blossom and bear fruit. When thinning branches, attention should be paid to making the incision smooth, neat and smooth.

retract

In order to restore growth, the pruning method of retraction can be adopted when the middle and lower parts of annual branches are bald and the top growth is weakened and drooping. The operation is very simple, raise the angle of the branches and cut off the healthy branches and buds with strong vitality and upward growth. This is to restore the natural growth of branches and enhance the overall growth of trees. When the secondary branches appear at the lower edge of the incision, they can be cut off from the base to promote the appearance of new jujube heads.

reduce the hours

Short cutting is to cut off the extended branches and secondary branches of the annual jujube tree head. This measure is to stimulate the germination of the main bud, proliferate new branches, enhance the tree potential, and make the main bud sprout new jujube heads. When cutting short, we should follow the principle of "removing the weak and retaining the strong" and the law of "cutting once and cutting twice", and the first secondary branch must be thinned to stimulate the germination of the main bud.

Wipe the bud

After germination in spring, the buds are smeared, mainly for some jujube trees that grow too fast and germinate too many jujube heads. After the jujube heads with large growth space are erased from the base, they are properly put into long-term treatment.

Pick your heart

Picking is to remove a part of the top of the new jujube head during the growing season of jujube trees. Its purpose is to cultivate fruiting branches, increase the number of jujube trees, reduce flower drop and fruit drop, and improve yield and quality. Coring methods are divided into repeated coring and light coring. Re-coring is to cultivate lignified jujube hanging. For some dwarf varieties, lignified jujube hanging is an important fruiting branch. The lignified jujube hanger originated from the two hidden buds at the bottom of the jujube head. In spring, when the head of new jujube grows to about 15~20 cm, the first branch is removed to promote the germination of the following two hidden buds, thus forming wood.