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What are the tree shapes suitable for pear protected cultivation? How to cultivate?
In order to improve the utilization efficiency of greenhouse and heating cultivation, close planting is generally adopted. Because of the influence of greenhouse and greenhouse coverage on illumination, the tree structure should be as simple as possible, generally adopting Y-shape or heart shape.

Y-shape can adopt 1.5m high plant spacing and 3.5 ~ 4m row spacing. The trunk is 70 ~ 80 cm high, and there is no central trunk. There are two main branches, and the height of the tree is 2.5 ~ 3 meters. There are no auxiliary branches on the main branches, which directly bear branches. During plastic surgery, the stem height is 80 ~ 100 cm, and the main branches are light and short, mainly on both sides. Strictly control the number of branches on the back, retract and update branches in time after the results, and the longest branch group should not exceed 50 cm.

Hi-shape is a single-layer hi-shape, with a plant spacing of 2m× 4m. Close planting is planned, and thinning will be carried out if it is too close. The trunk should not be too short, otherwise the fruit will press down after the branches bear fruit, and the lower part will be poorly ventilated and light-permeable, and the lower part of the fruit will rot easily. Generally, the trunk is 70 ~ 80 cm, leaving 3 ~ 4 main branches, the base angle of which is 45 ~ 50, and the sharp angle is small to maintain its growth potential. Extending diagonally between rows. The height of young trees is 80 ~ 100 cm. After the stem is fixed, many auxiliary branches are reserved, and all other branches are reserved except the main branch.