Summer pruning is also called growing season pruning. It is an important part of the annual pruning of apple trees. It occupies a very important position in the annual pruning of fruit trees. The main pruning methods include ring cutting, ring stripping, twisting, topping, pulling branches, and thinning. Branches and autumn hats and so on. However, improper pruning will cause adverse effects on fruit trees. Therefore, the following five principles must be followed in summer pruning:
1. The objects should be clear: the main objects of apple tree pruning in summer are let-to-grow trees, young and vigorous trees, and non-fruiting trees of suitable age. Trees that are difficult to produce flowers and trees that are too weak are generally not pruned in summer.
Second, the time should be appropriate: the apple tree should be pruned in summer to grasp the timing. Missing the opportunity will not only fail to receive good results, sometimes the opposite result will occur. Generally, the effect of girding and girding is from the end of May to the beginning of June. Topping and twisting should be carried out from late May to early July. It is better to pull branches and thin branches from the beginning of autumn to Bailu. It is better to cut with a hat in the first half of August.
What problems should be paid attention to when pruning apple trees in summer
3. The amount of pruning should be appropriate: As the summer pruning of apple trees will damage or cut off some branches and leaves, it will reduce the photosynthetic area and weaken the growth of fruit trees. Therefore, the amount of pruning should be light, and under the premise of improving ventilation and light transmission, cut as much as possible, so as not to stimulate the growth of the tree or not to weaken the vigor of the tree excessively, so as to avoid adverse effects on the growth and results of the tree.
Fourth, to promote flower bud differentiation and improve fruit quality as the ultimate goal: pay attention to improving the canopy microclimate, ensuring good ventilation and light transmission conditions, after cutting the branches are dense and moderate, and the arrangement is even and reasonable, and the light can be transmitted to the inner chamber and the lower layer to achieve the upper The degree of not covering the outside and not covering the inside, in order to achieve the purpose of promoting flower bud differentiation, avoiding "big and small years" and improving fruit quality.
Summer pruning of apple trees
V. Depending on the tree and local conditions: Determine the appropriate pruning method and degree of pruning according to the age, vigor, variety characteristics, natural conditions, pruning purpose, etc. of the apple tree, or promote flowers and fruits, or promote growth and momentum, or improve fruit quality, Ultimately achieve the goal of high quality, high yield, stable yield and strong trees.
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