Selection and cultivation of (1) trees. Cherry trees are clustered, naturally happy and scattered. The shaping and pruning methods of natural joy, which are popularized and applied in production, are introduced as follows; The completed cherry seedlings were used to build gardens. When shaping, the stem height should be 40-50 cm, 5-6 full buds should be left under the incision, and 3-4 branches with staggered growth and uniform distribution should be selected as the main branches. When the new bud grows to about 40 cm (mid-to-late June), leave 30-35 cm for coring, and generally you can develop skills above 10. In the spring of the following year, the extension branches of the main branches were cut into 40 ~ A0 cm long, and then the shaping was completed by pulling and coring. For varieties with strong drought, they can stay for 2 ~ 3 years, pay attention to strong control, and then sparse after the tree is stable.

When shaping young cherry trees, we should strive for low stem and short crown, that is, the stem height should not exceed 30 cm, the crown height should be kept at 2.5 meters and the tree height should not exceed 3 meters, which is convenient for close planting. The plant spacing can be 3× 4m or 2.5× 3.5m, and 55-76 plants can be planted per115 hectare (per mu). In shaping and pruning, it is mainly to grasp the branches and slow down the flowers. Because young trees grow vigorously and erect, they are not easy to open. Branching can increase the number of branches and slow down the growth, which has obvious effect on early fruiting and high yield. Generally, branches should be carried out in time after the juice begins to flow in the second and third spring after planting. Too early branches are hard and easy to split, and too late (such as after mid-May) has no obvious effect on the formation of flower buds. The suitable angle of branch pulling is 60 ~ 80 degrees. For the flourishing Naong variety, you can pull the branches many times. Be careful not to grind the bark when pulling branches, otherwise it will easily cause gum flow and affect the growth of young trees.

(2) Picking the core in summer, adding branches and expanding the crown. 1-3-year-old cherry saplings, which can quickly increase the number of branches and expand the crown in summer. For the purpose of crown expansion, when the branch length is about 40 cm, leave 30-35 cm for coring and pick it 1 ~ 2 times a year; For other branches, when the new shoots grow to 10 ~ 15 cm, 5- 10 cm can be left for coring, which can not only increase the number of short branches, but also continuously core the strong branches on the back, and cultivate stable fruiting branches. According to the experiment, in the early stage of coring (early May), there were more short branches and foliage branches, and the number of flowering was also more. When the coring period is late (early June), there are more medium and long branches. Usually not in late July.

For the cultivation of branches before fruiting, Naweng varieties use different types of flagella branches to form knots, while Dazi varieties can cultivate various types of branches by moderate light cutting or coring. After 4 ~ 5 years, the fruits gradually increased and the trees became slack. Generally, in summer, you don't have to cut the dormancy period to pick your heart. Otherwise, it will easily lead to vigorous branch growth and closed crown, which will affect early fruiting and high yield.

(3) thinning transverse branches, retracting and renewing weak branches. Pruning the fruit rhyme of big cherry should be carried out according to the variety, tree potential and growth stage. For example, the branches of Naweng varieties are retracted, and they don't shoot branches, or even middle and long fruiting branches, which makes the short fruiting branches and bouquets shrink less and less, and the yield is getting lower and lower, especially for some weak trees, because of the heavy retraction, the death of flagella groups is accelerated, and the large purple varieties have too many short branches, which will cause vigorous growth. Therefore, it can be used to slow down first, so that after the tree is relaxed, the branches will retract slightly. The same variety should continue to be released slowly when it is growing vigorously, so as to alleviate the tree vigor. Some trees have been seriously weakened, and the slow-release branches can be properly retracted, renewed and rejuvenated. Trees in full fruit period, except big purple varieties, are suitable for not cutting.

Natural slow release.

Pick the heart.