The best time for the transplanting of camphor trees is the budding period, which is when the survival rate is the highest, that is, 10-15 days before and after Qingming. Now we will introduce the transplantation methods and technical measures of camphor trees as follows. First, the transplantation method 1. Drying method: Transplanting by cutting dry method is usually applied to large trees with a diameter of 10cm or more. Because it grows in situ all the year round, the root system is widely distributed and deep, and the canopy crown is large and difficult to transplant. Its advantages are: (1) It can control the branching height of the branches. (2) Lifting and transportation are convenient. (3) Reducing the consumption of water and nutrients in leaves will help improve the survival rate. The disadvantages are: the tree is not beautiful in a short time, and the greening effect is poor. It usually takes more than 2 years to form the crown. 2. Root-reduction method: The root-removing and crown-reduction method is to remove the roots of the sweet-stemmed trees that are planned to be transplanted in situ. When pruning, maintain the basic skeleton of the tree. The root cut range is 5 times the diameter of the trunk, saw the rough roots, spray 0.1% naphthalene acetic acid solution at the root, and then cover the soil. After 2 years, it is transplanted as needed. The advantages are: (1) The survival rate of transplanting is high, and the trees recover quickly. (2) The greening effect is also better. The disadvantages are: long cycle time and high input costs. 3. Transplanting with crown: The transplanting method with crown is basically to maintain the original canopy for transplanting, often for the sake of immediate sight and specific requirements must be transplanted with the crown. The technical difficulty is high when transplanting, especially the big trees with a diameter of 15 cm or more must use lifting equipment. Before the excavation, the tree crown should be cut to remove weak branches, retain 50% of the leaves, reduce the loss of water and nutrient transpiration, and the diameter of the earth ball should be more than 8 times the diameter of the trunk, and then soil ball dressing and transplanting. Second, transplanting technical measures 1. Apply 0.1% naphthalene acetic acid solution or rooting powder to roots before planting to promote new root growth. 2, wound repair, to prevent decay, can be used 0.1% naphthalene acetic acid and lanolin mixture smear wound. 3, the bottom of the tree cave decomposed organic fertilizer, loose soil inside the hole to supplement nutrients. 4. When planting, do not light deep, shallow, according to the situation of the groundwater level, with soil ball exposed surface 1/2-1/4 is appropriate, too deep is easy to rot. 5, irrigation, film. Apply fine soil to paste with earth ball, pouring large water, then cover the surface of the root to prevent evaporation of water or excessive water infiltration into the root, causing rot. 6, around the dry, wrapped around the film. Dry the ropes with straw ropes, then wet them, drench them, and dry them with a thin film. This will keep the trunks moist and prevent evaporation of water from the trunks and sun damage. But do not rot grass rope and burn the bark. 7, canopy spray, add leaf surface moisture. For large trees with crowns, sprinklers can be installed at the top of the canopy and foliar sprays on sunny days. 8, take a shady shed. For trees transplanted with crowns, taking into account the excessive evaporation of leaf surface water, take a shading shed, reduce the light intensity, thereby reducing the evaporation of water. 9, foliar fertilizer, supplement the root nutrients. After the new leaves germinate, the leaves are sprayed with 0.1% urea solution to supplement the deficiency of nutrients in the roots, which is beneficial to the growth of the new leaves. But avoid spraying in the fall. 10, plastic trim. After the new shoots are germinated, prunes are trimmed, weak branches are cut, stout branches are kept, new shoots are cultivated, and adventitious buds germinating on the trunk are instantly wiped off.
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