In the apple tree pruning, the selection of the tree pattern should be targeted. For the newly-built orchard, a modern cultivation method of high spindle is adopted. For the old closed orchards, they must also make up their minds to reform. The renovation of apple closed parks mainly adopts the principles of thinning, lifting, falling heads, removing large branches, and removing large lateral branches on large branches, transforming apple trees into high-efficiency and energy-saving trees. The three main branches of Qiaohua densely planted evacuated layered and spindle-shaped apple trees. The crown must be remodeled after 10 years of life, which also conforms to the growth law of Qiaohua rootstock apple trees. Shut-down cluttered tree shape changed to high light efficiency tree shape to move major surgery to solve the excessive problems of the backbone branches. Many fruit farmers are reluctant to give up. The first reaction is distressed, and they can't do anything. In fact, this is a failure to understand the growth laws of fruit trees. The concept of high-spindle apple orchard management is more scientific. For the renovation of closed parks, the original temporary plant should be cut in accordance with the situation, and the problem should be solved in one go. The permanent transformation of the permanent strains is mainly focused on plastic surgery and plastic surgery. The tree tree transformation is divided into three steps: The first step is to dry out: The major branches of the base are sawn year by year, and the final dry height is raised to 1-1.5 meters. The second step is to drop the head: The falling head should be carried out in different years. The final height of the tree is controlled at 2.5-3 meters, which is convenient for field operations such as picking and fighting drugs. The third step sparse branches: the main branch to maintain uniaxial extension, focus on sparse removal of the major branch selected to stay on the main branch, where the thickness of more than 1/3 of the main branch of the lateral branches to be gradually removed, re-cultivation of the results, completely resolve the competition Branch problems. In the transformation of trees, attention should be paid to solving the problem of separation between the main and the subordinates, cutting off the retrograde branches, and solving the problem of tree disorders. The main branches should be properly left with some golden mean branches to prevent day burns. For the long drooping result, the branch group is retracted and rejuvenated. After the transformation, the result position adopts three shifts, that is, there must be a result branch in the current year, a result branch in the next year, and a result branch in the third year. Take the way to prepare for the branch to achieve the results of rotation, to avoid the size of the year, to ensure high yield and quality year after year. Great changes must be done in time to protect the wounds, and the cut kerf area with a thickness of more than 3 cm needs to be applied with fruit tree wound healing agents. The last-integrated tree shape maintains 4-6 large branches and each large branch retains 20-30 small result branch groups. The entire transformation takes 2-3 years to complete. The output is affected in the first two years after the change, and the output is basically maintained afterwards. The original level, but the quality will be greatly improved. Unwrinkled Smooth Film Dressing Frame,I.V. Transparent Dressing,Record Label Transparent Film Dressing,Breathable Waterproof Transparent Dressing Zhende Medical Co.,Ltd , https://www.zhendemedicals.com