Winter trim of chestnut tree
Chestnut tree pruning in winter is best from the latter half of the fall to the first half of the spring. First, the trimming of young chestnut trees Sapling pruning, to master the "preferably hibernation pruning, light should not be heavy, less sparse not cut" principle. Cut off all the lateral branches below 50 cm in diameter during the winter cut, and remove the dense branches, slender branches, overlapping branches, and cross branches in the tree branches. At the same time, select the remaining branches to adjust the distance between the branches. And direction, nurturing the main branch, the extension branch of its backbone branches can be put for a year, two years short cut. Second, chestnut pruning During this period of pruning, the pests, stems, stems, round stems, cross branches, overlapping branches and slender branches in the beak should be cut off to enhance the ventilation and light transmission in the canopy, and the concentrated nutrients should be used to thicken the results. For the extension branches of the apical branch and the stem branch, a short cut of 50 cm should be reserved to promote lateral branching, increase the number of resulting mother branches, increase the area of ​​results, and at the same time allow the control of the rate of movement of the crown. The leggy branches in the tree twigs or in the middle and lower branches of the tree branches can retain part of them, and they can be transformed into the resulting mother branches. This will not only increase the area of ​​the result, but also avoid the "emptiness" in the crown. For too intensive results, the mother branch should be appropriately sparsely or partially short-lived to make new branches. Before the canopy is connected, the projected area per square meter of the crown can retain about 15 result branches, and after the canopy connects, about 13 result branches can be retained, and the branch distance is about 40 cm. For excessively prosperous results, branches can be appropriately shortened so as to promote the extraction of new shoots in the lower part. The results of aging have been shown to be appropriately retracted in order to trigger new shoots and cultivate into fruiting branches. Third, the pruning of the old chestnut tree For those severely aged chestnut trees, they can be dug to refill the seedlings. If the base of the chestnut tree can be germinated, excellent seed grafting can be carried out. After cultivating the mature material, the aging tree is sawn, and the new seedlings or grafted seedlings occupy the space without being empty. ". For chestnut trees that are not very aged, this period can be preceded by the removal of dead branches and diseased branches and branches, the use of leggy branches and thin and thin branches, the old branches that retract to the strong branches, and new branches that will be extracted in the coming year. Select the shoots with good growth direction and robust growth to cultivate them into the backbone branches and the result branch groups. The transformation of aging trees should not be rushed, should be carried out in batches and in batches, and be gradually adjusted so that their branches are evenly distributed and the growth is good and the purpose of restoring normal results is achieved. It is worth noting that pruning must be combined with the improvement of soil and fertilization in winter in order to receive immediate results and do more with less.
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