Summer pear tree shaping and management basic knowledge
The plastic pruning of pear trees is an important measure in cultivation management and a very detailed work. Plastic surgery is based on the growth habits, growth and development rules, site conditions and other cultivation management characteristics of pear trees. Pruning is based on plastic surgery, continuing to cultivate and maintain high-yield tree structure, regulating the balance between growth and results, and maintaining pears. The tree is of high quality and high yield. Plastic surgery and pruning must be coordinated with the comprehensive management of soil, fertilizer, water and integrated pest management to fully exert its production increase.
Plastic surgery and pruning are indispensable technical measures in the cultivation and management of pear trees. They are also irreplaceable by other technical measures, but they are by no means omnipotent, nor unique. They must be treated correctly and applied in detail. If one-sided emphasis on the role of trimming, while ignoring other technical measures, or pruning and other technical measures against; over-emphasizing the tree shape, trimming for pruning; or not paying attention to pruning, can not fully play the role of plastic trimming, and Obtaining early fruit, high quality, high yield and high efficiency will lead to late results of young trees, low yield of large trees, poor quality and short economic life.
Lazhi: It is very important for the pears with higher growth habits. Generally, the branching angle is increased by pulling, supporting and hanging branches around July, and the angle required for cultivating the tree shape is adjusted. The pulling work of the main side branches must be timely, and it is not allowed to delay the season by mistake. Otherwise, the adjustment of the tree shape in the future is too large, and the tree shape cannot be standardized.
刈 刈 (peeling): generally carried out on the main branches, side branches and long branches. When the ring is ring, the spiral ring should be 2-3 turns. When stripping, the stripping width should be strictly controlled, and the xylem should not be damaged. The width should be within 1/10 of the diameter of the branches, and the width should not exceed 1.0 cm. It is carried out in May-July, and it is not good for wound healing. After peeling, it can be wrapped with a plastic film to facilitate healing. Ring stripping is extremely harmful to the tree. It is recommended to use ring cutting, smearing foliar fertilizer, no side effects on the tree body, and can play a role in promoting flowers and fruits.
In the pruning process of pear trees, regardless of the pruning method, it is necessary to notice its comprehensive reaction in order to achieve the intended purpose. Before pruning a pear tree, first observe the age and strength of the tree and how much it is spent, etc., in order to decide what kind of pruning method should be adopted. Under normal circumstances, for young trees and saplings and trees with a small number of flower buds, the amount of pruning should be light, while for mature trees and weak trees, especially for mature trees with a large amount of flowers, the amount of pruning should be appropriate. some.
Pear scab, black spot, round rot, pear net, pear leaf and hibiscus are the main pests causing early defoliation. In addition, one-time picking is one of the causes of early defoliation. Falling leaves in advance is the main reason for the secondary flowering of pears. In order to prevent secondary flowering, it is necessary to pay attention to picking fruits in batches; timely replenishing fertilizer after harvesting; strengthening pest control; and strengthening irrigation and tree cover in dry season.
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