The main methods of pruning apple trees

Strong branches can be circumcised several times at intervals, leaving 8-10 cm between each channel. The girdling must be carried out during the active period of the formation of the tree. During this period, it can be exfoliated and it is easy to tear off the girdling bark. The new shoots start to grow until the second year. This period of time is not exfoliated. In order to promote the formation of flower buds, girdling is best performed during the physiological differentiation of flower buds, from late May to mid-June in Beijing, Tianjin, Shandong, and Hebei. The girdling after spring budding to flowering is beneficial to the improvement of fruit setting rate and flower bud differentiation, and the girdling after flowering is only conducive to flower bud differentiation. Of course, any growth season girdling will have an inhibitory effect on the growth of new shoots on the ring. During the growing season, girdling was early, wounds healed slowly, girdling was late, temperature was moderate, and healing progressed quickly. Pulling the branches at the opening angle: When the new shoots are planted in the year, it is best to carry out the shoots in the autumn, and the base angle is 80 to 90. The second year old shoots are best carried out after the budding in the spring. Not too thick shoots, with double-stranded 12-gauge wire, a cypress wood hook, a cypress wood cymbal, a wooden structure to pull the shoot tip, a hibiscus hitting the soil, and a wooden rake that is solid enough not to encounter irrigation and rainfall When the ground collapses, do not interfere with orchard operations. Branching branches: In winter, the branches of other trees are used as sticks, and the branches that will open the corners are outwardly supported. The sticks are held up against the center to support the branches. Both sides of the stick should be cut into flat duck bills and avoid hurting the center and the branches. The second year should be withdrawn (has no effect). With open angle clips: when the branch open angle, can use open angle clip (made with 8-10 wire "W" shape) to open the shoot tip pinned, removed after the angle fixed. This method is very simple and rapid, suitable for young shoots of young trees. Pendants: For 1-2 years, branching angles, use hanging gongs (can be made by yourself, with iron wire on the bricks, cast cement blocks, etc.) to drop the branches, according to the tension of the branches to prepare the size of the condolences or loading soil The plastic bags fall from the middle and late May and reach the open angle effect in the autumn. You can also change the condolences to another branch and use them again. Litchi is also called taking branches. Repeatedly for a certain period of time, the fingers of the branch are gradually moved from bottom to top to bend the xylem, and the skin is not lacerated. Litchi can change the opening angle and orientation of branches. The main object of litchi is to cultivate new shoots of auxiliary branches and spindle extension branches, and to extend the new shoots beyond the height of the tree or the crown. The new shoots in the late mid-August litchi can promote the shoots to be full or form flower buds, multi-year, short branch and top flower buds. Branches of 1-2 years from the middle to late May to the beginning of June and the second to the eighth month of litchi in 1~2 years can promote the development of its branches and 1/3 of the branches to form the top flower buds; in early June and early July And in early August, 3 litchis; can make more branches and about 1/2 of the branches to form the top flower buds.

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