How to trim soft jujube for 2 years

To determine the amount of buds left: winter pruning can leave more buds and fewer branches, leaving 5-9 fruiting mother branches per square meter. Deal with the trunk: remove the curved, weak, aging and poor growth trunk year by year, and slowly cultivate a new trunk, not excessive pruning at one time, so as not to affect the yield. Pruning: leave the branches, remove the outer branches, and cut off the dense branches, overlapping branches, withered branches, dry stakes and so on. Pull the branch and tie the vine: pull the branch flat on the shelf surface, and then tie it tightly to the steel wire.

First, determine the amount of shoots left.

If the yield per mu is calculated according to 2000 kg per mu, the plant spacing is 2m, the row spacing is 4m, and the average yield per plant is 20 kg, it is estimated that about 50 fruits per kg, plus accidental loss of 10%, can retain 200,350 flower buds. Winter pruning can leave more buds than branches, each mother branch according to 6-8 flower buds for pruning, it is necessary to keep 12-18 mother branches, that is, about 5-9 fruiting mother branches per square meter.

Second, deal with the backbone

The main results are as follows: 1. For the multi-trunk tree, the trunk of bark injury, diseases and insect pests, bending and poor growth can be removed year by year to avoid affecting the yield and should not be removed excessively at one time.

2. The main branches of the main branches which are seriously moved out, weak and aging should be pruned properly.

3. If the trunk does not grow well, the middle and lower branches can be cultivated and used for replacement. After the new trunk is hung with fruit, the old trunk can be removed. Generally, it can be sawed off immediately after fruit picking, so as to prevent the wound in spring from causing bleeding.

3. Pruning

The main results are as follows: 1. in general, the annual fruiting mother branch should be far away from the main bare leg branch. if there is a mother branch at the same time, we should choose to leave the positional branch, remove the outer branch, remove the outer branch outside the two-frame wire, grow curved curly branch, thin and weak branch, ultra-short branch, and cut off the over-dense branch, overlapping branch, withered branch, dry pile and so on.

2. The mother branch should be kept with good maturity and full buds. For selection and comparison during re-pruning, the mother branch can be protected by 10-20% more.

Fourth, cutting shoots and leaving buds

After pruning, the selected fruiting mother branches can be processed. Generally, the full buds of spring and summer shoots are all dry, necrotic buds, sprouting buds, non-full buds and autumn buds are all cut off, and the buds under blind nodes can be cut off slightly in autumn. The buds under blind nodes should be retained with good quality. According to the principle of leaving fewer branches and more buds, strong fruiting branches can retain about 12-15 full buds, and the golden mean can retain about 8-12 buds. It is better for weaker mother branches to retain about 6-8 buds.

5. Re-cutting

By comparing the selected fruiting branches, only the good fruiting mother branches are retained, and other undesirable, missed and inappropriate weak branches can be re-cut.

Sixth, pull branches and tie vines

The main results are as follows: 1. In order to avoid plant injury caused by the loss of branches during vine binding, all branches should be arranged according to a certain proportion and spacing. When straightening the strapping, the branches should be stretched flat on the shelf surface, and then tightly tied to the steel wire.

2. If there is a tree whose branches move out of the heart, the branches can be cross-tied. In order to fix them not to be blown away by the wind, the branches can be tied up repeatedly for 5-10 times according to different conditions.