(1) can control the branching height of branches.
(2) Convenient hoisting and transportation.
(3) Reducing the consumption of water and nutrients in leaves is beneficial to improve the survival rate.
Disadvantages are: the recent greening effect is poor, and it usually takes more than two years to become a crown. Root-cutting and crown-shrinking method: the camphor tree to be transplanted is transplanted by root-cutting and crown-shrinking method. When pruning, keep the basic skeleton of the tree, and the range of root cutting is 5 times the diameter of the trunk. Saw off the thick roots, spray 0. 1% NAA on the roots, and then cover the soil. After two years, transplant as needed.
Its advantages are:
(1) The survival rate of transplanting is high, and the trees recover and grow quickly.
(2) The greening effect is also good. Disadvantages are: long cycle and high input cost. Crown transplantation: Crown transplantation is basically to maintain the original crown for transplantation, and it is often needed for the immediate landscape and specific requirements. Transplanting technology is difficult, especially for trees with DBH above 15 cm, lifting equipment must be used. Before digging, the crown should be trimmed again, the weak branches should be removed, and 50% of the leaves should be kept to reduce the transpiration loss of water and nutrients. The diameter of the soil ball is 8 times larger than the diameter of the trunk, and then the soil ball is wrapped and transplanted.
Technical measures of Cinnamomum camphora transplantation;
1. Spray 0. 1% NAA or rooting powder on the roots before planting to promote the growth of new roots.
2, wound repair, prevent decay, you can use 0. 1% mixture of naphthylacetic acid and lanolin to smear the wound.
3. Apply decomposed organic fertilizer at the bottom of the tree hole, replace the loose soil in the hole and supplement nutrients.
4. When planting, it should be shallow and not deep. According to the groundwater level, it is appropriate for the soil ball to be exposed to the surface of 1/2- 1/4. If it is too deep, it will rot easily.
5. Irrigation and plastic film mulching. Apply fine soil to make it close to the soil ball, pour water on it, and then cover the root surface with plastic film to prevent water evaporation or excessive water infiltration into the root, resulting in rotten roots.
6. Dry and package the film. Blow-dry with straw rope, then wet thoroughly and water, and then blow-dry with film, which can not only keep the trunk moist, but also prevent the trunk from evaporation of water and the sun from burning the bark. But don't burn the bark with rotten straw ropes.
7, canopy spray, supplement leaf moisture. For trees with a crown, a spraying device can be installed at the top of the crown to spray leaves on sunny days.
8. Build a shade shed. For trees with transplanted crowns, considering the excessive evaporation of water in leaves, a shading shed is set to reduce the light intensity, thus reducing the evaporation of water.
9, foliar fertilization, supplement root nutrients. Spraying 0. 1% urea on the leaves after the new leaves germinate and leathern is beneficial to the growth of new leaves. Register a foreign company, but don't spray it in autumn.
10, plastic trimming. After the new branches germinate, they are trimmed, the weak branches are cut off, the strong branches are kept, the new branches are cultivated, and the adventitious buds germinated on the trunk are immediately erased.
The above technical measures for transplanting Cinnamomum camphora should be used dialectically according to the actual situation, and can also be used to transplant trees of other tree species, but they must be used reasonably according to the biological characteristics of different tree species. In short, in order to ensure the survival rate of tree transplantation, the principle of "three-point planting and seven-point cultivation" should be implemented.