Tree use
Commonly used greening tree species are osmanthus fragrans, osmanthus fragrans, Lagerstroemia indica, Ginkgo biloba, cherry blossoms and banyan trees.
Trees are mainly used as street trees in street greening, and their functions are mainly to shade pedestrians and beautify street scenes in summer. Therefore, when selecting varieties, we mainly start from the following aspects:
(1). The plants are neat in shape and have high ornamental value (or flowers, leaves, exotic fruits, bright flowers, or long flowering period). It is best that the leaves change color in autumn and branches can be seen in winter.
(2) strong vitality, few pests and diseases, easy management, low management cost, and no peculiar smell of flowers, fruits and branches;
(3) Trees germinate early and shed leaves late, which is suitable for normal growth in this area. In the late autumn defoliation period, the leaves can fall off in a short time, which is convenient for centralized cleaning;
(4) The trees on the street have neat crowns, high enough branching points, stretched main branches, and an included angle of not less than 30 degrees with the ground, and the leaves are tight and shady;
(5) It is easy to propagate, survive and resume growth after transplantation, and it is suitable for transplanting big trees;
(6). Have certain anti-pollution and anti-smoke ability;
(7). Trees have a long life and their growth rate will not be too slow. There are cedar, juniper, juniper, tamarind, balsam tree, locust tree, acacia tree, Luan tree, weeping willow, steamed bread willow, Eucommia bark, Fraxinus mandshurica and so on.