Pruning techniques for apple trees

1 control of excessive trees. Excessive growth, branch growth advantage, resulting in relatively nutrient deficiencies of flower bud differentiation. Unfavorable to flower bud formation. For this type of branches in the transformation, mainly to "slow", extended branch long, generally cut in weak bud, increase the main branch angle, branch thinning on the back side, under the left group, multi branch group, the backbone of branch ring cutting and other measures to control the transport of nutrients, promoting flowering.
2 pruning of weak trees. When the tree growth is too weak, it can be implemented on the basis of water and fertilizer management to stimulate the growth rate. Extension branches should be cut in the middle, full of buds, take strong branches to take the lead, and gradually raise the extension angle, less stay back branches, in order to weaken the growth of branches, should be left behind and on both sides of the branch group, to promote growth.
3 pruning of crown trees. A large fruit branch, a small branch appeared solution of partial crown growth: one is in the lower branches, thinning, thinning in the upper part of branches: two is widening the branch angle, elevation angle: three is the largest number of small fruit, fruit is four less branchlets; big direction is less in the direction of fertilization, branchlets more fertilizer, no way to cut cut with large tree reconstruction.
4 bare branches. The apple tree in some branches for a few years do not cut, often uniaxial extension, few branches, forming a large section of the flowering branches bare, due to poor performance, nutrient limited area and fruit growth dysplasia. For this kind of branch, when cutting, if there is a space to do it, the bud will be stimulated by girdling. Grow the needed branches or shrink back in time, stimulate the branches and cultivate good branches to enlarge the large area. If there is no space, should be immediately thinning to improve the tree body ventilation and light conditions.
Treatment of 5 strong, lower and weak trees. When pruning, the lower branches of the tree crown can be extended by the competition branches, and the extension branches keep small angle extension, and promote the growth of the lower branches. In the upper branch increase extension angle, choose to stay back under the branch extension branch, in order to balance growth.
6 treatment of weak and strong branches. The lower branch of the large horn extends, and the back branches take the lead, weakening the growth vigor, and Kobe Mie's small angle extends, and the back branches take the lead and promote the growth of wang.
7 flower pruning. At the beginning of the seedlings and fruiting apple trees, the pruning should be in weak branches to take the lead, to control the growth of tree nutrition. Increase nutrient accumulation and promote flowering. Can also support branches, the implementation of ring cutting and other closure measures to promote flowers.
8 measures to prevent weak trees. Apple is in the full fruit period, as a result, tree pruning should be easily weakened, with short cut, retraction technique. In order to strengthen nutrition growth, prevent growth weak. Leave the flowers can also be adequate measures to strengthen vigor.
Treatment of 9 intersecting branches. In the tree, the crossing branches are retracted. Put a long one, and the two lines should be retracted in order to leave the work lane and improve the ventilation and light transmission conditions. When the cross branch was not more than 10%, the growth rate was not affected, and more than 10% should be retracted.
Treatment of 10 parallel branches. The apple tree saplings and early for parallel branches, should try to pull to use, in order to increase tree branches, in the full fruit period of apple trees in no space? Case should be sparse one, put a tree, to improve ventilation and light conditions.
Treatment of 11 nutrient branches. Support branch trees should be taken at early growth stage, and pressure to promote flower district, to increase the amount of the tree. Results immediately after retraction to avoid back bare, develop into compact fruit set.
12 the inner bore is too dense, the result sticks, the group handles. According to the principle of combining zoom thinning, thinning dense and disordered branches, retraction of high and thin pendulous branches, the branch group, a uniform distribution of compact, light on the biennial support branch, but excessive thinning, thinning a gate or before the promotion, concentrated nutrients, the years of flowering. A single erect leggy branches, space can be flat, don't pull down, and his branches, ease the apical dominance, no space from the base of thinning. The growth of moderate golden level drooping branches can be a small amount of "live hat" concentrated nutrition. Cut the mouth at the mouth of the sprout, there is time to stay straight, no empty, all can be sparse.

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