The requirements for tree shape are few backbones and poor level. It is necessary to give priority to the middle stem and promote more branches. Only by promoting more branches can we achieve strong branches, multiple branches, low level and high level difference. It usually takes two years. The way to "promote" is pruning and fertilization. That is, on the basis of strengthening the management of soil, fertilizer and water, with the help of the vigorous growth of young trees, pruning and promoting branches are implemented and realized.

1, fixed stem. Generally 60-

80cm

About, the seedlings with branches should be particularly heavy and cut short to make them "a stick". Don't fix the stem too high, unlike apples and peach trees, because the top advantage of big cherry is particularly strong.

2, winter scissors. Pruning in winter should not be done too early. Generally speaking, winter pruning should be carried out after the beginning of spring. There are three key points:

First, determine the height of the middle trunk, which is usually cut in winter. The specific height depends on the growth of orchard trees, which can be high or low.

Second, the lateral branches on the middle trunk are heavily trimmed, that is, they are trimmed very short. Be sure not to cut it too long. Don't trim it, lest it cause a wound. The purpose is to increase the number of branches and provide conditions for throwing.

Thirdly, for stems cut into sticks, it is necessary to practice every three buds, or carve buds where branches are needed. Go deep into xylem.

3. Prune in summer. Pruning in summer is also pruning in growing season. Young cherry trees are particularly vigorous, with obvious natural growth stratification. It is necessary to combine winter and summer, break stratification, control the horizontal growth of trees, promote vertical growth, and make them into spiral structures.

Generally, the above-mentioned process of promoting branch formation takes two years to complete in field production, but if it is cultivated in a small area, manpower and material resources can be completed in one year. The specific measures are no different, except that the summer pruning in the second growing season mentioned above should be implemented in the first year of planting.

Step 2: Promote flowering and fruiting.

The so-called flower promotion is to implement all technical measures to promote flower formation and make it enter the fruiting period ahead of schedule. It is necessary to promote pruning, promote drug use and control fertilizer and water. One is to cut the branches extending from the trunk short when the buds are full. The second is to implement the bud carving work. According to the different purposes of bud carving, it can be divided into: seeking branch carving and seeking flower carving. The purpose of seeking a branch carving is to let it branch out, and it will be separated by three buds for a while. Mainly on the extension branches of the middle trunk. Seek flower carving, carve more, advocate bud carving. The more buds, the more growing points, the more dispersed the growth force, and it is not easy to grow long branches, but easy to grow short branches. The third is to pull the branches. In winter pruning, only the extension branches of the middle trunk are cut short, and all other side branches are thrown away. Pull the branches when the sap is flowing, not too early, it will break easily. Straighten, not bend. Otherwise, it will form a "bow sculpture" situation. The fourth is summer pruning. On the basis of winter pruning, it is very important to do a good job of pruning in the growing period. There are two main points in summer pruning: timely pit removal: the combination of reasonable bud carving and timely pit removal is the most effective technical measure to promote the flowering of big cherry. Appropriate cycle shortcut: This is a shortcut for about 40 ″ re-coring. Generally, it is carried out on the extension of new branches in the middle trunk.

Step 3: Stabilize high yield.

It is to stabilize the fruiting part, stabilize the growth ability, adjust the balance between vegetative growth and reproduction, and achieve the goal of high quality and high yield. When pruning, keep the angle, length and thickness of various branches. Make it clear outside, make it clear inside. In other words, it is enough to leave less heads in the peripheral extension, and a stick can extend 20-30㎝. In this way, the clustered fruiting branches in the inner chamber can be kept stable, ventilated and transparent, vigorous in growth, strong in continuous fruiting ability, high in quality and high in yield.