When will the apple tree be pruned

Many people must have eaten apples. People often say, "an apple a day keeps the disease away from me." it can be seen that eating apples has a lot of benefits to people's health. In the north, many people will grow apples. To know that apples want to grow well, they must prune their branches, which will greatly increase the economic life of apple trees.

When will the apple tree be pruned

Winter is the dormant period of apple trees, the focus of orchard management is winter pruning, combined with winter cutting off diseased branches, insect branches, scraping off thick, old bark, in order to reduce or eliminate overwintering diseases and pests.

Tips on pruning Apple trees

The main results are as follows: 1. For the upper and lower weak apple trees, the lower branches of the crown can be extended with competitive branches to maintain a small angle and promote the growth of the lower branches. The middle and upper branches increased the extension angle, and the lower branch was selected as the extension branch to balance the tree potential.

2. For the apple trees that are weak at the top and strong at the bottom, the branches extend at large angles, the back branches take the lead, weaken the growth potential, the upper branches extend at small corners, and the upper branches take the lead to promote vigorous growth.

3. For young apple trees and primary fruit trees, weak branches should take the lead during pruning in order to control the vegetative growth of trees, increase nutrient accumulation and promote flower formation. The measures of river closure such as ring cutting can also be carried out to promote flowers in the auxiliary branches.

4. After the apple tree enters the full fruit period, due to a large number of fruit, the tree is very easy to weaken, so the techniques of truncation and retraction should be adopted in pruning to strengthen the vegetative growth and prevent the tree from weakening. The tree can also be strengthened by keeping an appropriate amount of flowers.

5. The cross branches in the apple tree should retract one branch and put one branch long. when the rows cross, the two lines should be retracted, so as to set aside the working path and improve the ventilation and light transmission conditions.

Apple tree shaping and pruning index

1. Tree height: the height of the dwarfing trunk is 0.8 to 1.0 meters, the tree height is 3.0 to 3.5 meters, the tree trunk is 1.0 to 1.5 meters high, and the tree height is 2.5 to 3.0 meters. There is no handover between plants, and the operation channel of 1 to 1.5 meters between rows is retained, and the crown coverage rate is 75%.

2. The number of branches: the number of branches retained per mu of apple trees after cutting is about 80,000, of which the proportion of medium and short branches accounts for 70%, and the percentage of top flower branches accounts for about 30%.

3. Branch group: at the initial stage of happy shape, small and medium-sized branches were mainly cultivated, with emphasis on all kinds of oblique or inferior branches on the main branch, and then cultivated into a drooping large three-dimensional fruiting branch group year by year. The spindle-shaped branchlets are born in the state of the branch group and open at an angle.

The benefits of apple tree pruning

The main results are as follows: 1. Advance the fruiting years and prolong the economic life. Pruning of apple trees can effectively regulate the growth and extension direction of branches, improve the light conditions of trees, accumulate and distribute nutrients, and shorten infancy, so it can regulate the growth and development of fruit trees and promote flowering and fruiting.

2. Improve the light condition of the tree. Shaping and pruning can improve the efficiency of photosynthesis of fruit trees, such as selecting suitable tree shape, opening the angle of backbone branches, properly reducing the number of backbone branches, reducing tree height and canopy thickness, etc., can improve light conditions, increase effective leaf area, and then through reasonable application of fertilizer and water, improve leaf quality and leaf photosynthetic efficiency, prolong photosynthetic time, can increase the accumulation of photosynthetic products, which is beneficial to flowering and fruiting.

3. Improve the nutrition of trees. Shaping and pruning can improve the metabolic ability and nutrition of trees. The content of nitrogen and water in the tissue of the pruned part was much higher than that of the unpruned, while the content of starch and sugar in the pruned branch was lower than that of the control. This shows that pruning changes the nutritional composition of fruit tree branches, and this change is beneficial to flower bud formation and early yield.

Apple pruning can be done in any season, but winter pruning is the best choice. This will not only reduce the incidence of insect pests in the coming year, but also improve the growth of apple trees in the second year. There are also many tips for pruning apple trees, and we should follow the principle of weakening but not weakening when pruning.