Spindle-shaped operation is simple, and the fruiting period is early. 1 year the stem is fixed at 80 cm ~ 100 cm. After the stem is fixed, the bud is carved to promote the development of the main branch. Cut 2 ~ 4 buds in winter and pull branches at 60 ~ 70 in autumn. In the second year, the buds were carved on the main branches about 30 days before germination, and they were carved continuously for 2 years to form flower buds. After 2 ~ 3 years of plastic culture, the height of the tree is 2.5 ~ 3 meters, and the trunk is evenly planted with 12 ~ 15 main branches, the thickness of which is lower than that of the trunk 1/3.

2 natural happy pruning

It is suggested that the stem should be fixed 60 cm ~ 80 cm earlier, and then the buds should be carved to promote the development of 3 ~ 4 main branches. The branch opening angle is 70 ~ 80 in autumn, and flower buds can be formed as early as possible before the main branches germinate in the next year.

Sparse branches

The pruning of young trees is mainly based on crown expansion and branch addition, but the excessively dense cross branches should be properly thinned out, the peripheral branches should be stretched by uniaxial stretching or light shearing, and the competitive branches, strong branches and oblique branches should be cut off or thinned out. At the early stage of fruiting, slow growth should be given priority to to promote the formation of fruit branches. However, the auxiliary branches that are too dense and too large should be properly shrunk and thinned, and short branches and fruit branches should be used to balance the tree potential; In the full fruit period, trees are mainly rejuvenated. After fruit picking, the big branches, dense branches and bare branches should be thinned out, the tree structure should be adjusted, the old, weak and short branches should be thinned out, and the strong branches should be selected to prolong the full fruit period.

4 Pull branches, take branches and carve buds.

Cherry blossoms should be plucked in summer and autumn, with the opening of main branches being 70 ~ 80 and the opening of secondary branches being 80 ~ 90. For strong and vigorous branches and bare-legged branches, sprout in spring to promote the growth of branches, sprout the upper and sunny sides of branches, and cultivate fruiting branches.

Step 5 Pick the core and twist the tip

Taking advantage of the early maturity of big cherry buds, timely pinching and twisting tips can control vigorous growth, promote branch growth, increase the number of short branches, relieve tree vigor and bear fruit early. Generally, 1 coring is carried out from late May to mid-June, and the second coring is carried out in early July. If the purpose is to promote flower bud differentiation, when the spring shoots grow to 15 cm ~ 20 cm, 5 ~ 6 large leaves can be left for pinching or twisting to improve the flower formation rate.

6 retraction

For trees with strong external strength and weak internal strength, strong internal strength and weak internal strength, with many short branches and few middle branches, uniaxial slow release should be adopted respectively to recover the dominant strong branches in the internal room; Cut off the middle trunk branches to reduce the number of peripheral branches; Recover the slowly expanding branch at the appropriate branch; If there are too many internal short branches and the density of flower buds is too high, they should be cut short at the leaf buds above the flower buds of mixed branches to promote the growth of the front branches and improve the fruit setting rate. Don't cut the flowers together, so as not to grow branches and become dead branches after fruiting.

7 girdling

The girdling of big cherry has a strong timeliness, and it is carried out within 10 days from before flowering to after flowering. According to the observation of several large cherry orchard, the degree of girdling can be slightly heavier than that of apple girdling, and the number of short branches and bouquets of trees increases obviously after girdling, whether on the trunk or the main branch.