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What are the main points of shaping a peach tree with three main branches and two main branches?
(1) Three Branches of Natural Happiness Modeling Points

The stem height of seedlings is 50 ~ 60 cm, and there should be more than 5 complete buds as plastic bands within 20 cm below the incision. In the first year, three new shoots with horizontal azimuth of120 were selected as main branches, and the main branches should not face due south.

Pruning in the first year in winter: young trees grow for one year after they are fixed, and the main branches have been fixed after cultivation and pruning during the growth period. When pruning in winter, the main branches need to be shortened, and the length should be cut from 1/3 of the total length to 1/2 according to the growth potential of branches. Cut the buds and leave the outer buds, and leave the second and third buds on both sides. Keep the remaining branches as much as possible without affecting the growth of the main branches, and cut them lightly and short; Anything that affects the growth of the main branches should be thinned out.

In the spring and summer of the following year, when the extension branch of the main branch grows to about 50 cm, the core is picked at 30 cm to increase the number of branches of the auxiliary branch that promotes germination. External buds should be left in the terminal buds after enucleation, which is convenient for cultivating extended branches. After coring, the secondary buds germinate too densely and the dense branches should be sparse. When the remaining second tip grows to about 40 cm, the second tip is cored again.

Cutting in the winter of the following year: lengthen the main branches, cut short branches, and cut off 1/3 ~ 1/2 of the total length, and the cutting length is about 40 ~ 50 cm. At the same time, lateral branches are selected, the first lateral branch is 60 ~ 70 cm away from the main branch, and the branching angle between the lateral branch and the main branch is 60 ~ 70. Extending obliquely outward, the length of cuttings is slightly shorter than that of main branches. 2 ~ 4 fruiting branches can be left on each main branch and pruned according to the requirements of different types of fruit branches.

In summer, when the elongation tip of the main branch is 50-60 cm long, the core is removed, and the elongation tip and the second lateral branch of the main branch are selected from the secondary branches extracted after core removal. The second lateral branch is 30-40 cm away from the first lateral branch, which extends in the opposite direction to the first lateral branch and also grows obliquely outward. When the remaining branches grow to more than 30 cm, take some top cores to promote the formation of flower buds.

Pruning in the winter of the third year: after two years of peach planting, the growth potential turned strong and the branch growth increased. The length of the main branch extension branch should be slightly longer than that of the previous year. In principle, it is still 1/3 ~ 1/2 of the total length, and the actual length is about 60 ~ 70 cm. If the second branch was not cultivated when pruning last summer, the second branch should be selected when pruning this winter. The specific requirements are the same as last summer's pruning, but the pruning length is slightly shorter than the main branch. The position of fruiting branches should be appropriate, and it should be noted that large fruiting branches should not be equipped with two branches on the same branch segment of the main and lateral branches to prevent them from being too dense or too thin, weakening the growth potential of the top of the main and lateral branches and affecting the expansion of the crown. While preventing the growth potential of the top of the main branch from weakening, we should pay attention to prevent the crown from being strong due to the strong advantage of the top of the main branch, which will lead to the increase of the fruiting part of the fruiting branch. If the second and third bud branches under the cut are taken as the extension branches of the main branch, so that the main branch extends outward in a broken line shape, and the side branches are arranged at the protruding parts of the main branch, the shortcoming that the fruiting branches move outward quickly can be overcome.

Pruning in the fourth year: in the fifth year after planting, the winter pruning in this year is similar to that in the previous year. The tree planted for five or six years is about 3 meters high and has entered adulthood. Plastic pruning should keep the shape and structure of the target tree.

(2) The two main points of shaping happy modeling.

This tree shape is generally easy to form, the main branches are easy to maintain balance, and the crown is not closed, but the pruning of young trees in the first 1 ~ 2 years is slightly heavier.

The two main branches are naturally happy, and the main branches are arranged in opposite directions. The position of lateral branches is not strict. Generally, the first lateral branch can be cultivated at about 1 m from the ground, and the second lateral branch can be cultivated at 40 cm from the first lateral branch, in the opposite direction to the first lateral branch. Side branches of the same level on each main branch should extend in the same rotation direction. In the peach garden on the terrace in mountainous areas, the main branches should be on the terrace wall and under the terrace, and the lateral branches should be parallel to the terrace. The opening angle of the main branch should be 45 with the vertical line of the crown center, and the opening angle of the side branch should be 50 ~ 60.