For young cherry trees in the third year, the main pruning task is to finish crown shaping in spring. Based on the principle of restraining the strong and helping the weak, restraining the former and promoting the latter, the uniaxial elongation pruning method was used to cultivate the large bearing branches with uniaxial elongation and the bearing branches with multiple uniaxial elongation on the main branches, so as to realize early fruiting and high yield. Attention should be paid to maintaining the master-slave relationship, balancing the tree potential, adjusting the composition and distribution of branches, and distinguishing the opening angle of main branches. Summer pruning of three-year-old cherry trees should be in early July. This time is a key turning point in the development of the big cherry tree. We should seize the opportunity to finish summer pruning as soon as possible to reduce the ineffective consumption of nutrition.

Three-year-old trees, after pruning and adjustment in spring, will grow some new branches with different lengths on both sides and the top of the main branch in summer, and several branches with upright backs will be born in important parts of pruning ... In order to expand the crown, pruning methods should be adopted to remove strong branches and leave weak branches at the top of peripheral branches. Pruning method should be adopted to remove the big branches and keep the branchlets on both sides of Okumo, and the vertical branches on both sides of the main branch should be removed by more than 25 cm. Sparse some new branches at the top of the crown periphery, leave a new strong branch running on one head as an extension branch, and leave a strong branch at the top of all the main branches on the second floor, so as to promote the formation of scale as soon as possible with the advantage of including a large crown at the top, and complete the goal of three-year tree formation.