chemical composition
Coral trees mainly contain diterpenoids, triterpenoids, flavonoids, sesquiterpenes, lignans and coumarins. Coral trees are widely used in greening because of their lush foliage, good shielding effect and pruning resistance. Red fruit is coral-shaped, gorgeous and lovely. Coral trees are often renovated into green walls, green doors and green corridors in formal gardens. In natural gardens, they are usually planted individually and in groups to decorate corners and make them easy to hide. Planting coral trees all over the wall of the garden boundary, replacing the dull background of decorative masonry and clay with its natural ecological modeling, can produce the effect of "the garden wall looming among the flowers", which not only appears natural and lively in appreciation, but also expands the sense of space of the garden. In addition, coral trees can be used to absorb toxic gases in the atmosphere because of their strong anti-toxic function.
Road greening
The general criteria for the selection of road greening tree species are: strong adaptability, long life, less pests and diseases, strong resistance to tobacco and wind damage, strong germination, pruning and shaping resistance, and controllable growth; This tree is clean, without thorns and pollution. Coral trees have good biological and ornamental characteristics, which meet the requirements of road greening. In particular, it has the functions of smoke prevention, wind prevention, dust fixation and noise reduction, and can improve the surrounding ecological environment and human settlement environment. Walking in a beautiful garden can make a hedge and organize people's flow. The leaf area index of coral trees is more than 10 times higher than that of Lagerstroemia indica. The leaves are funny, stable and plastic, tightly shaded, and can purify dust and tail gas, which is often used for urban traffic road greening or highway isolation belt. When used for road greening, it is often trimmed into various shapes to form beautiful scenery.
public green area
Coral trees are widely used in public green spaces. As a barrier, for example, coral trees and heather are combined into a high fence, which can be arranged in front of garbage dumps or toilets in parks or scenic spots to hide ugliness and beauty; Arranged in the middle of garden office area, staff activity area and tourist activity attractions to avoid visitors entering or disturbing, forming a barrier; Co-planting with other trees, shrubs and ground cover plants, defining the boundary of the courtyard, isolating it from commercial streets, parking lots, urban roads and highways, and enhancing the comfort and warmth of the courtyard. For example, in the building courtyard of Canberra, Australia, coral trees, eucalyptus trees and acacia trees form a plant wall barrier, which is extremely beautiful [; It can be used as the background of some architectural sketches and sculpture landscapes; Or cut into short hedges of various shapes to limit people's behavior or organize people's flow; It can also be used for building foundation planting or planting trees to decorate the corner.
Greening of industrial and mining enterprises
Coral trees not only have strong absorption capacity for a variety of harmful gases, but also have obvious adsorption effect on smoke and dust. According to the determination, the annual dust retention of coral trees is 4. 16t/hm2, which is much larger than that of evergreen plants such as Euonymus japonicus and oleander. In addition, because coral leaves are rich in water, contain less resin and are not easy to burn, they can be used as fire barriers between factories of industrial and mining enterprises and are ideal tree species for greening of industrial and mining enterprises at present.