1, spring and autumn pruning

When pruning pear trees in spring, it is necessary to cut off the branches that are weak, suffer from pests and diseases and cannot bear fruit, and keep the branches that are vigorous to promote the centralized distribution of nutrients. In autumn, cut off the branches and leaves that are not growing well, turn yellow and dry, and it is best to use sterilized sharp scissors when pruning to ensure the smoothness of the incision.

2, summer pruning

The climate in summer is hot, and too closed environment is easy to breed bacteria, which will affect the growth of pear trees. During cultivation, horizontal branches, upright branches and branches of diseases and pests can be cut off to improve the air permeability between plants, and the thin and dense flower buds can be erased to avoid excessive consumption of nutrients.

3, winter pruning

When the temperature is low in winter, pear trees will go into dormancy, and the consumption of nutrients will be reduced. At this time, dead branches, useless branches and dense branches should be cut off to reduce nutrient consumption, and properly cut off vigorous branches, which is beneficial to pear trees to store nutrients and survive the winter smoothly.

Matters needing attention in pruning branches of pear trees:

65438+ Pay attention to cultivating lateral branches to enlarge the crown. The long branches on the crown can be properly used or cut off from the base to prevent disturbing the tree shape.

Prune different main branches, usually by rotating the same main branch. For better ventilation and light transmission, the main branches corresponding to different trees should be as consistent as possible in the cultivation direction. The first lateral branch on the main branch should be slightly away from the main branch, so as not to form a "door side", and opposing branches are not allowed to appear, which will weaken the growth of the main branch.

2. Pear trees like light more than apples and are more sensitive to light intensity. Generally, when the light intensity is above 60%, it is easy to form full flower buds, and when the light intensity is below 30%, it is difficult to form flowers. When the canopy is closed and the light is insufficient.

Fruiting branchlets, especially branchlets, are prone to aging or death. It is not advisable to leave too many or too few branches when pruning. Considering the planting density and the angle of main branches, the number of main branches can be appropriately increased and the distance between layers can be appropriately reduced in the young tree period; With the growth of tree age, the interlayer distance of main branches should be appropriately increased, and attention should be paid to adjusting branches and branches of various parts of the tree.

3. Pear trees have stronger budding ability than apples, but weaker branching ability than apple trees. When pruning, there are also differences in the number of main branches, the length of short nodes, the degree and method of branch group cultivation and pruning.

For varieties with strong branching ability and budding ability, pruning should be properly thinning branches, less short cutting and light retraction to avoid stimulating too many new branches, and the number of main branches in the whole tree should be less; Varieties with strong germination and weak branches can be released slowly, cut lightly and cut short, with few branches, and the number of main branches of the whole tree can be properly reserved.