When is the jujube tree suitable for pruning? Jujube trees are usually trimmed in summer and winter. The purpose of pruning is to inhibit the excessive growth of trees, reduce the nutrient grab of waste branches and weak branches, and thus improve the yield and quality of thorn trees.
First, put the prepared loam into the pot, water it at the same time, keep moisture and stir. Then shake the flowerpot to make the soil surface smooth. Then the soaked jujube branches are cut into the soil, and one end of the inclined plane is inserted into the soil, and the depth of insertion into the soil can be 1/2 or 1/3 of the branch length.
The branch spacing is kept at about 3 cm, and it will take root and sprout in a few months after cutting. Therefore, flower friends need patience and careful care to cultivate jujube potted plants.
There are four main ways to prune jujube trees. If the branches and leaves are too dense, which affects the internal lighting and ventilation, you can properly thin the branches and cut off the dense branches and bifurcated branches.
If the new branches are not growing well, they can be shortened appropriately to promote the emergence of new branches and increase the number of branches. If the old branches droop or grow poorly, they can shrink at the branches to help them regain their vitality. If the growth is uneven, the branches can be pulled apart at a certain angle, so that the new branches have enough growth space. The following is the introduction of pruning methods.
1. Thinning refers to thinning too dense branches, mainly cross branches, overlapping branches, drooping branches and 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.
2. In order to restore growth, when the middle and lower branches are bald and the top growth is weakened and drooping, the pruning method of retraction can be adopted.
3. 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.
4. After sprouting in spring, the bud is smeared, mainly for some jujube trees that grow too fast and the jujube heads germinate too hard. After the jujube heads with large growth space are erased from the base, they are placed for a long time.
5. 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 rootstocks, reduce flower and fruit drop, and improve yield and quality.
Pruning skills of jujube trees are mainly pruned in winter, and can be slightly pruned according to the situation of plants in summer. When pruning, it is necessary to remove more cores and control the height of plants, which can promote the results. In addition, branches with abnormal growth, such as excessive growth and dryness, should also be cut off in time.
How can jujube trees grow fast by pruning? If the first half of the new branch is thick and the back is gradually dry, it needs to be cut short. Short cutting can promote new shoots, increase the number of branches and make them grow more luxuriantly.
How to prune jujube trees before they reach full bloom? It is necessary to core the jujube head and the secondary branches on the jujube head to prevent the jujube head from consuming too much nutrition, promote the differentiation of flower buds and the development of flower organs, avoid the phenomena of bud drop, flower drop and fruit drop due to insufficient nutrition, and improve the fruit setting rate.
At present, the main measures to improve the fruit setting rate of jujube trees are: girdling in full bloom, girdling on trunk or big branches, and the width of girdling mouth is1/8-110; At flowering stage, gibberellin was sprayed with the concentration of 1-1.5g/100 kg of water every 2-3 days.
Foliage fertilizer can be used alone or mixed with gibberellin, such as 0.3% borax and 0.2% potassium dihydrogen phosphate. It would be better to pollinate with bees if possible.
Matters needing attention in jujube pruning have been reshaped in the fruiting period, and the vegetative growth and reproductive growth are basically balanced. During this period, the pruning of jujube trees should not only keep the growth of main branches and prolong branches, but also focus on cultivating various fruiting base branches and branches to make them bear normal fruits, so that the yield of jujube trees will increase year by year and enter the full fruit period.
In order to create a good group structure of jujube orchard, jujube trees are allowed to overlap 10 ~ 15 cm, and ventilation and light transmission zones with the width of 1 ~ 1.5 m must be left between rows to ensure good ventilation and light transmission of the whole orchard.
Attention should be paid to adjusting the subordinate relationship of each branch in the crown, ensuring the ventilation and light transmission of the crown, maintaining a high effective leaf area, and promoting high yield and high quality of jujube trees.