Newly transplanted trees have weakened resistance and are susceptible to natural disasters, pests and diseases, and man-made damage to livestock and poultry, so it is necessary to take strict precautions. Next, the editor will tell you how to use fir stumps to maintain large trees:

1. Support: Due to the large crown, high center of gravity and small root system of large standard trees, they cannot be fixed by the tree itself and are easily blown down or tilted by the wind. Even if the tree shakes, the roots will easily shake, making the roots unable to take root or causing damage. Dew will cause the roots to rot. Therefore, after the planting of the big tree is completed, it is necessary to support it. The support of the big tree is usually made of fir wood piles, which depends on the standard and height of the tree. In this project, the fir wood piles used for the big trees are generally triangular or 4-cornered. Symmetrically supported, the bottom of the bamboo pole is fixed with short wooden stakes and supports to prevent it from sliding in the wind. The bamboo pole and the support part of the tree body are tied firmly with hemp rope. The supporting part of the tree should be wrapped with brown leather or straw rope to protect it from damage. After the bark is supported, shake the tree vigorously. The tree will be strong and will not shake.

2. Prevent diseases and pests: Adhere to the principle of giving priority to prevention and combining prevention and treatment. According to the characteristics of tree species and the occurrence and development patterns of diseases and pests, check frequently and do preventive operations. Once the disease occurs, it is necessary to prescribe the right medicine and prevent and control it in time.

3. Fertilizer: Fertilizer is helpful to restore tree vigor. In the early stage of transplantation of large trees, the root system has low fertility absorption, so it is advisable to use external fertilizer, usually once every half a month. Use quick-acting fertilizers such as urea, ammonium sulfate, and potassium dihydrogen phosphate. The fertilizer is prepared into a fertilizer solution with a concentration of 0.5 to 1 percent. Spray on the leaves in the morning or on cloudy days. Spray again in case of rainfall. After the root system sprouts, the soil can be fertilized. It is required to apply thin fertilizer frequently to prevent damage to the roots. .

4. Antifreeze: The branches of newly planted large trees have late root germination, short annual growth cycle, and little accumulation of nutrients. Therefore, they are not adequately arranged and are susceptible to low temperature damage. Antifreeze and heat preservation work should be done well. On the one hand, after autumn, It is necessary to control nitrogen fertilizers, increase phosphorus fertilizers and potassium fertilizers, and gradually extend the lighting time and increase the lighting intensity to improve the lignification degree of the tree and improve its own cold resistance. Secondly, before the cold wave of winter comes, the tree should be well insulated. Operation. You can choose to cover it with soil, cover it on the ground, set up wind barriers, build a plastic greenhouse, etc. for maintenance.