Winter cut vine notes

Due to grape injury in early spring, it is necessary to carry out plastic trimming of grapes in areas where it is necessary to keep the area cold and buried. However, in the production, improper winter shearing often causes adverse effects on the trees. Shear should pay attention to the following points:

Protect the cut-off buds and cut them at 3 to 4 cm on the cut-off buds. If the internodes are short, cut them in the previous section of the cut-off buds. Clipping should be smooth to prevent cracking, so as not to affect the germination of buds.

Branching sprigs can be removed from the base when they are sparsely branching, short piles should be left in the sparse branches, and short piles should be cut in the second year. At the same time, avoid contiguous wounds, so as not to affect the smooth flow of tissue.

When avoiding drooling on the main vine, avoid mouth-to-mouth injury as much as possible.

Reasonably determine the length of the cut-off length must be fully mature, there is space for the site, the branch should be appropriate to stay long enough to complete the plane as soon as possible. The varieties with high growth rate and low basal shoot bud rate should be pruned with medium-length shoots, moderate growth or weak growth, and varieties with high seed setting rate at the base should adopt medium and short shoots for pruning.

If single branch updating is adopted for branch regeneration, the winter shear is the result of pruning the short shoot of the resulting parent branch without leaving a reserve branch, and the result of the upper branch is obtained in the second branch of the resulting mother branch in the second year and the lower part of the inflorescence is removed. Prepare the branches, remove the branches that have been produced during winter cutting, and prune the short shoots on the preparation branches. If branch updating is used, one result is left for each result site and one for the upper part is still pruned by the middle and long tips, and the lower branch is left for 2 to 3 buds.

Note that the perennial dendrite renewal is a perennial vine with a weaker apex and still has a better result area at the back, and it retracts to a strong, growing branch; for perennial branches with a nice branch at the front and a bare back, vines are updated and new plants are cultivated. Result; for perennial vines that grow weakly. If there is the ability to produce results, when the base is not replaced by sprouts, it can be used in combination with the method of shortening and erecting the vines on the old vines to help the weak vines turn stronger and balance the tree vigor; if there is no result for the perennial old vines, Ability should be completely removed.

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