"Pruning in summer", also known as pruning in the growing season, is an important part of the annual pruning of apple trees. It occupies a very important position in the annual pruning of fruit trees. Its main methods of pruning are circumcision, girdling, tipping, topping, and pulling. , thinning and autumn hats. However, if it is improperly pruned, it will cause adverse effects on fruit trees. Therefore, the “pruning in summer†must grasp the following five principles: The subject must be clear that the main objects of “summer pruning†are indifference trees, juvenile trees, age-inefficient trees, and flowering difficulties. The varieties, too weak trees generally do not carry out "summer pruning". Time should be suitable for the "summer pruning" to grasp the timing. The missed opportunity not only fails to achieve good results, but sometimes results in the opposite. General ring cutting, girdling works best from late May to early June. It is advisable to pick up the heart and twist the tip from late May to early July. Pulling branches and thinning branches will be better during the period between Liqiu and Bailu. It is better to wear a cap and cut it in mid-August. The amount of pruning should be appropriate because the “summer pruning†should create wounds or cut off some branches and leaves, which will reduce the photosynthetic area and weaken the growth potential of fruit trees. Therefore, the amount of pruning should be lighter. It is advisable to lightly cut under the premise of improving ventilation and light transmission so as not to stimulate prosperous growth or to weaken the vigor without excessively impairing tree vigor so as to avoid adverse effects on tree growth and results. To promote flower bud differentiation and improve the quality of fruit for the ultimate purpose of improving the microclimate of the tree crown, ensuring good ventilation and light transmission conditions, cutting the branches densely and moderately, uniformly and reasonably arranged, the light can be transmitted to the medial malleolus and the lower layer, not to cover Underneath, the extent to which it does not cover the interior, in order to achieve the purpose of promoting flower bud differentiation, avoiding "years of size" and improving fruit quality. It is necessary to determine suitable pruning methods and pruning degree, or to promote flower growth, or to promote long-term growth, or to improve fruit quality, and ultimately to achieve high quality and yield, depending on the conditions of the tree, according to age, tree vigor, variety characteristics, natural conditions, and trim purposes. The purpose of stable production and strong trees.
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