How to Make Trees in High Density Apple Orchard

Since most of the apple orchard trees still use the basal three-branch evacuation layered shape, which is no longer suitable for planting high-density orchards, the tree shape must be modified by the spindle tree shape to make it an improved spindle tree shape. Adapting to changes in planting densities, this is a key technical measure to increase apple yield and quality. The specific reform measures are now described as follows:

1. Thinning of dense plants, the implementation of a reasonable close planting. For a closed orchard with a spacing of less than 3 meters, inter-plant thinning is performed first, and then the transformation is performed according to the modified spindle shape.

2. Open main branch angle to improve light transmission conditions. The erection of branches is an outstanding feature of the closed orchards, and increasing the angle of branches is the main technique for renovating such orchards. In the process of opening angle, it is necessary to reach the requirements of the corresponding tree indicators as much as possible.

3. Compress the branches and reduce the number of branches. The free-spindle-shaped or slender-spindle-shaped main branch should directly bear the result branch. When the sparse-layer sparse layer is modified to improve the spindle shape, stepwise compression is required. The original side branch should be changed to a large-scale branch group. As a result, the shoots were compressed into medium-sized shoots or dredged.

4. Remove too many large branches and keep them dry and strong. Timely sparse stems from excessively dense and round stems (more than 1/3 of the dryness) in the stems, which can open up the level, provide transparent illumination, and maintain the growth advantages of the central leadership to avoid the main branch. Long, make sure treeish middle ground.

5. Shorten the length of big branches and control crown width. The general branch is first compressed into large branches between the plants, and then the large branches located between the rows are compressed. The specific compression method is roughly divided into two types: First, for the branches that are extended too long and have a moderate growth, one-time retraction is in place; secondly, branches that are more prosperous and have weaker branches or smaller branches may be taken out. After urging or self-preparation of the girdling method before taking the first twigs, it should be retracted in place the next year. Avoid shrunk in the shooter year after year.

6. Mainly slow, uniaxial extension. Restraining is the primary principle of tree transformation. Only after successive years of pruning can we achieve the purpose of controlling the crown. The uniaxial extension is to control the grade and volume of the branching shoots on the stem, especially the apical branching amount, inhibit the epitaxial growth, and achieve high quality and high yield.

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