The tree culture structure at each stage of the apple tree is different. In order to cultivate the happy-shape tree structure, it is necessary to change from the main body shape to the main trunk shape to the small crown girdle shape before finally transforming into a happy shape. How to train these four stages of the specific shape of the tree, Northwest Agriculture and Forestry University College of horticulture Apple expert Liang Jun for the majority of fruit farmers with scientific guidance.
1-4 years old apple tree
The primary tree structure of 1-4 years old apple trees is cultivated according to the “main trunk shapeâ€, and the apple trees are planted in the year from 1m to 1.3m, and the plasticity of 20-25cm under the shearing needs to retain 8-10 plump buds. Leave 2-3 main branches selected. 2-5 years after planting, the trunk should not be short in principle. Each year, 3 to 5 main branches are planned to be cultivated. In the 5th year, 10 to 20 main branches will be selected. The main branch is not opposite and does not overlap. The spacing between adjacent main branches is maintained. More than 20-30 centimeters, in addition to the main branch of the main trunk and a small number of auxiliary branches, the excess branches are all removed. On the main branch, the competition branches, angle branches, over-strength branches and over-tight branches were eliminated in time. The distance between the same branch on the main branch is kept at 30 cm or more, and no branch is left in the base of the main branch within 30 cm.
5-9 year old beginning result apple tree
The results of the 5-9-year-early birth of the apple tree evolved from the “main trunk shape†transformation to the “change main trunk shape†tree structure. The main task of this period was to eliminate large auxiliary branches, and to establish large lateral branches on the main branch. , Skirts and back branches are modified. The method is: first, sparse the lateral branches of the door and the main branches of the Dafu, and then remove the excess lateral branches so that each main branch retains at most 2-3 lateral branches and the main branch base is within the range of 40-50 cm below the main branch. Within 40-50 centimeters, strong branches are not left, and the remaining lateral branches are maintained at more than 50 centimeters. The mop skirts on the lower main branch are completely removed once in principle, and individual reserving values ​​can be reverted to small branches. The skeleton structure of the tree has been initially formed, and it should gradually fall over and be happy.
Age 10-19 Apple Trees
In the 10-19 year-old apple tree, transforming from the main trunk shape to the small crown crown shape transforms and transforms into a "dry" shape or a multi-branched shape. The method is: Gradual removal of temporary large branches, elected to retain the permanent main branch. In the classification and trimming of the temporary main branch and the permanent main branch, the modification period should be based on the principles of “controlling potential, multiple branches, appropriate sparseness, light reduction, and small cutsâ€. The temporary main branch should be controlled before being eliminated. The potential is pruned mainly, removing one to three large branches each year and completing it in 3-4 years. When the branches are dredged, they should avoid causing large wounds and concurrence on the same part of the trunk. According to branching position, orientation, angle and branch configuration, 3-4 permanent main branches are selected and each main branch is transformed and cultivated to form 1-2 stable lateral branches. The first lateral branch is 1.5-2.5 meters away from the main trunk. The second lateral branch was 0.3-0.5 m away from the first lateral branch, and the middle branch and the small branch were mainly on the lateral branch.
More than 20 years of stable production of apple trees
More than 20 years of stable production of apple trees have been transformed and cultured to complete the happy shape, to maintain a stable tree skeleton, and maintain the strong growth potential of the main branches and lateral branches. The main branch has three included angles of 120 degrees, and the lower main branch preferably extends toward the south. Each permanent main branch retains 1-2 relatively stable lateral branches. The lateral branches are inserted in an empty position to avoid intertwining and adjust the crown amplitude. Update the branches of the rejuvenation results to reach the old branches of the tree and extend the result years.
Air Dryer,Desiccant Air Dryer,Industrial Hot Air Dryer Machine,Industrial Air Dryer
Hangzhou Zhongju air separation equipment manufacturing Co., Ltd , https://www.hzzjkfzz.com