The growth and development of cherry trees have certain rules, but under the influence of cultivation conditions and artificial conditions, it is not appropriate to adopt a model for pruning. The method and degree of pruning should be determined according to the biological characteristics of varieties, different growth and development stages and the specific conditions of trees in order to achieve the best pruning effect. (2) Overall consideration and reasonable arrangement.
Choosing a suitable tree skeleton according to planting density requires long-term planning and consideration of reality. One-sided pursuit of a certain tree shape is not appropriate, but tangible, intangible and flexible. Specific plants or branches should be handled flexibly, and a tree structure with high and stable yield should be constructed, so that the master-slave relationship is clear and the organization is clear, and the early yield cannot be affected, and a high-yield tree should be constructed, so that the growth and fruit are balanced and reasonable. (3) The branches are open to promote flowering.
After the branch opening angle, the branch potential is weakened, that is, vegetative growth is transformed into reproductive growth, which is conducive to early flowering. The main branch opening angle makes the tree grow moderately, which is beneficial to high and stable yield. Summer pruning can take measures such as pinching, twisting, picking and cutting to promote the increase of branches and the formation of flower buds and improve the early yield. (4) light cutting, light and heavy combination.
The growth and fruiting of sweet cherry are different in the annual growth cycle and the whole life cycle. The purpose and method of pruning are also different. Therefore, according to the growth and development characteristics of sweet cherry in different periods and the specific situation of the tree body, pruning should be based on light pruning, with light and heavy, with light and heavy, combining light and heavy, regulating the growth potential of the tree body, solving the relationship between growth and fruiting, maintaining a long economic fruiting period, and achieving the purpose of strong, high-yield and high-quality trees.