Reasonably prune, keep the tree shape beautiful, strengthen water management, prevent soil freezing, reasonably fertilize, supplement nutrients to prevent pests and diseases, and ensure tree health. As winter approaches, big trees in northern my country begin to enter a dormant period. During this season, the growth of big trees The growth rate is slowing down, but the maintenance work cannot be relaxed. Correct tree maintenance methods in winter can not only help trees survive the winter safely, but also lay a solid foundation for growth in the coming year. This article will give you a detailed introduction to the methods of maintaining big trees in winter and help you take good care of these "lungs of the city". Reasonable pruning to keep the tree shape beautiful The first step in maintaining large trees in winter is reasonable pruning. Through pruning, sick and weak branches, crossed branches, inward branches, etc. can be removed to make the tree shape more beautiful, and it is also beneficial to the photosynthesis of the tree. Ventilation and light transmission, when pruning, the following points should be paid attention to: 1. pruning time: It is best to carry out during the tree's dormant period, generally from December to February of the following year.
2. Trimming tools: Use sharp scissors or saw to avoid damaging the tree bark.
3. Pruning method: Starting from the top of the crown, pruning down layer by layer to keep the tree symmetrical. Strengthen water management to prevent soil freezing. Big trees require relatively little water in winter, but soil freezing will lead to insufficient water supply and affect tree growth. Water management should be strengthened when maintaining big trees in winter. Specific measures are as follows: 1. Watering: Before the soil freezes, ensure that the soil is moist to help the trees absorb water.
2. Antifreeze: When the soil freezes, cover the trunks and roots with mulch such as straw and straw mats to prevent freezing damage.
3. Thawing: After the soil is thawed in spring, the cover should be removed in time to avoid affecting tree growth. Reasonable fertilization and supplementation of nutrients Big trees grow slowly in winter, but certain nutrients still need to be supplemented. During the maintenance of big trees in winter, the following fertilization measures can be taken: 1. Fertilization time: Generally carried out during the tree's dormant period, and the best fertilization time is From December to February of the following year.
2. Fertilization types: Choose compound fertilizers rich in nitrogen, phosphorus, potassium and other elements to promote tree growth.
3. Fertilization method: Spread fertilizer evenly around the trunk, then turn the soil and mix well. Prevent pests and diseases and ensure the health of trees. Although large trees grow slowly in winter, they may still be affected by pests and diseases. During the maintenance of large trees in winter, attention should be paid to the prevention of pests and diseases. The specific measures are as follows: 1. Clean the crown: Remove dead branches, fallen leaves, etc. within the crown to reduce the breeding of pests and diseases.
2. Chemical control: During the dormant period of trees, pesticides with high efficiency and low toxicity can be used for control.
Biological control: use natural enemy insects and other biological control diseases and insect pests, reduce the use of chemical pesticides.
The maintenance of big trees in winter is an important and meticulous task. Only by mastering the correct maintenance methods can we ensure the safe winter of trees and lay a solid foundation for growth in the coming year. I hope this article can provide useful reference for readers and jointly protect our Big trees, let them add green to our living environment. According to the "China Urban Greening Report", my country's urban green coverage rate has reached 40%, of which big trees play an important role. Let us work together. Contribute to urban greening.