In the process of landscaping maintenance and management, trees are easier to prune than shrubs, but the following issues need to be paid attention to: \x0d\ 1. The importance of tree pruning. Because trees have relatively low pruning requirements, many people think that trees can be pruned or not. This understanding is wrong. Just because the requirements are low doesn't mean it's unimportant. Garden trees not only have ecological benefits, but also have a beautifying effect. Beautiful tree shapes generally require proper pruning to form. In the process of growing year after year, trees will inevitably suffer from wind, rain, lightning, diseases, insect pests, Various injuries such as man-made destruction will inevitably produce dead branches, dead branches, disabled branches, diseased branches and other unstable branches. If there is any disturbance, these branches are likely to fall, causing damage to people's lives and property. In addition, garden trees growing in complex urban environments will inevitably conflict with surrounding trees, traffic, buildings, overhead pipelines, etc. The general way to resolve these conflicts is to prune garden trees. In addition, ground municipal construction often damages the root system of trees, which also requires pruning the above-ground parts of the trees to maintain the balance between the above-ground and underground parts of the trees. Therefore, tree pruning is important. \x0d\ 2. Standardize operations. The most commonly used technique in tree pruning is the removal of large branches. Large branches are relatively large and heavy. If not performed properly, the bark will be torn and the operator will be injured. Therefore, it is necessary to carry out standardized operations in accordance with the "three sawing method". The "three-saw method" is to first pull the first saw from bottom to top on the branch to be sawed about 20 cm to 25 cm away from the last saw kerf as a preliminary cut, until it is as deep as 1/3 of the diameter of the branch or until the saw is started. ; Then, pull the second saw from top to bottom about 3 cm to 5 cm in front of the prepared incision to cut off the branches; finally, saw off the stumps on the outside of the branch collar. ?\x0d\3. Tree structure. The main functions of garden trees are to provide shade and absorb toxic and harmful substances. Practice has proved that when the crown height ratio of a tree reaches more than 2/3, the tree structure is the strongest, the tree grows the strongest, and its ecological functions can be maximized. However, for street trees, they often conflict with traffic, overhead pipelines, buildings, etc. Therefore, the tree crown can be smaller, but the crown height ratio cannot be less than 1/2. Therefore, when pruning trees, it is not the higher the better, but the lower the better without hindering the passage of vehicles and people. \x0d\ 4. Safe pruning. Generally, trees are relatively tall, and pruning often requires the use of mechanical equipment such as high-branch chainsaws or climbing operations. The surrounding environment is also complex, such as high-voltage wires above and frequent human activities around them. Therefore, when performing pruning operations, you must pay attention to eliminate all possible safety hazards and ensure that "two no harms and one no harm" are achieved during the operations, that is, no harm to yourself, no harm to others, and no additional damage to the trees. This requires that unrelated personnel around the tree be evacuated before pruning the tree. If there are high-voltage lines around, the power department must be contacted. The power department is required to cut off the power and cooperate with the operation. When pruning, the operation must be strictly in accordance with technical requirements.