1-4 year old apple tree The trunk-shaped tree structure of 1 to 4-year-old apple trees is cultivated according to the "trunk shape". When the apple tree is planted, the stem is fixed at a distance of 1 to 1.3 meters, and 8 to 10 full buds need to be left for 20-25 cm under the cut. Choose to leave 2 to 3 main branches. In principle, the main branches should not be short for 2 to 5 years after planting. Plan to cultivate 3 to 5 main branches each year. By the fifth year, select 10-20 main branches. The main branches are not opposite and do not overlap. The distance between adjacent main branches is maintained. Above 20-30 cm, except for the selected main branches and a small number of auxiliary branches on the main trunk, all the extra branches are removed. Remove competing branches, over-angled branches, over-strong branches and over-dense branches from the main branches in time. Keep more than 30 cm between the branches in the same position on the main branch, and leave no branches within 30 cm of the base of the main branch. 5-9 year old fruiting apple tree At the beginning of 5-9 years of birth, the apple tree should be transformed from a "trunk shape" to a "changing trunk shape" tree structure. The main task of this period is to remove the large auxiliary branches and correct the large lateral branches on the main branches. , Skirt branches and large branches on the back are transformed. The method is: firstly remove the lateral branches of the door and the large auxiliary branches, and then remove the excess lateral branches, so that at most 2 to 3 lateral branches remain on each main branch, and the base of the main branch is within 40-50 cm below the main branch. There are no strong and vigorous branches within 40-50 cm, and the spacing of the remaining lateral branches should be kept above 50 cm. In principle, the mopping skirt branches on the lower main branches are completely removed at one time, and the individual ones with retention value can be transformed into small fruiting branch groups by shrinking. The skeleton structure of the tree has been initially formed, and you should gradually settle down and be happy. 10-19 year old apple trees The 10 to 19-year-old apple trees transform from the main stem shape to the small crown and open shape, and cultivate into a "stem" shape or a multi-main branch open shape. The method is: gradually remove the temporary large branches and select the permanent main branches. Regarding the classification and pruning of temporary main branches and permanent main branches, the reshaping period should be carried out according to the principle of “controlling potential, more branches, appropriate thinning, light shrinkage, and less cuttingâ€. Pruning is the main step, removing 1 to 3 large branches every year, and completing it in 3 to 4 years. When thinning branches, try to avoid causing large wounds on the same part of the main trunk that year. According to the branch potential, orientation, angle and branch group configuration, select 3 to 4 permanent main branches, each main branch is transformed and cultivated to form 1 to 2 stable side branches, the first side branch is 1.5 to 2.5 meters away from the main stem , The second side branch is 0.3 to 0.5 meters away from the first side branch, and the middle and small fruiting branch groups are mainly on the side branches. Stable yield apple trees over 20 years More than 20 years of stable-yielding apple trees have been transformed and cultivated to complete the happy shape. It is necessary to maintain a stable tree skeleton and maintain the healthy growth of main branches and side branches. The three main branches have an angle of 120 degrees, and the lower main branch extends southward in the ***** direction. Each permanent main branch retains 1 to 2 relatively stable side branches. The side branches are inserted and distributed to avoid mutual interlocking and adjustment. Crown width, timely update the rejuvenated fruiting branch group to achieve the tree’s old branches not getting old and extend the fruiting life. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for handling. phone
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