Apple tree pruning time in winter is generally suitable from mid-January to early March. Prematurely, shears are prone to frost damage and form dry piles; too late will weaken the tree. The winter cut of the apple tree not only must be fine, but also according to certain procedures. In order to achieve the desired purpose, the branch can be kept intact.
First, determine the pruning plan based on tree vigor. Before each tree is cut, a reasonable pruning plan should be determined according to the species, age, density, body structure, growth potential, and amount of results.
In general, the branches are cut first, then the auxiliary branches are cut, and finally the sequence of cuts is checked. When starting shearing, start with the main branch of the base and extend the head to cut from the full shoots. Attention should be paid to the position of the cut. Auxiliary branches are reserved for each side branch according to spatial orientation. Remove upright branches, leggy branches and competing branches on the back, and arrange the result branches. After cutting, trim another main branch.
Second, trim to 5 to see. In winter pruning of apple trees, the degree of pruning and the amount of pruning should be determined according to the condition of the tree body, natural conditions, and site conditions. Generally, “five views†should be performed.
(1) Look at the age of trees. Saplings and early fruit trees should have a small amount of pruning, and the degree of pruning should be light. Attention should be paid to the cultivation of tree types and fruiting branches. In the fruit period, trees should be properly cut and the rotation should be taken care of; the senescent tree should be cut and renewed. .
(2) Look at the amount of flower buds. The amount of fruit trees with a large amount of flower buds should be larger and the degree of pruning should be increased. Strictly control the total amount of flower buds and the proportion of flowers and leaf buds, and the ratio of flowers and leaf buds is generally 1:20. For young trees with fewer flower buds, flower buds should be lightly cut, and branches and branches without flower buds should be renewed.
(3) Look at the tree. Strong wang trees should be lightly trimmed to stand upright and strong branches, leaving lateral branches and mean tree branches, in order to ease tree vigor, and then promote the formation of flower buds; weak trees to prune, cut off weak branches and drooping branches, update the aging results Zhizu group .
(4) Look at the variety characteristics. The varieties with strong sprouting ability and strong branching ability, such as Fuji and Guoguang, are likely to cause canopy closure, poor light in the inner canopy, and a large amount of pruning.
(5) See cultivation management conditions. Trees with good soil, fertilizer, and water management, and trees with strong trees should be lightly pruned; on the contrary, trees with poor slopes and poor management should have more pruning, and the degree of pruning should be heavier and less sparse.
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