abstract
Lishui has a beautiful environment and rich landscape resources. With the economic development in recent years, urban and rural ornamental greening is becoming more and more important. Coupled with the accelerating pace of urban and rural construction in Lishui City, it has promoted the rapid development of landscaping. How to choose green varieties with strong adaptability and high ornamental value has become a new problem in landscaping work. Investigation on ornamental trees can not only clarify the types of ornamental trees in Lishui city, improve their ornamental value, but also make urban and rural greening trees more beautiful.
Keywords: ornamental trees in Lishui City
After investigation, the main tree species are Ginkgo biloba, Cinnamomum camphora, Magnolia grandiflora, Ficus, Sapindus mukoraiensis, Magnolia grandiflora, Cedar, Poplar and so on.
3. 1. 1 Ginkgo
Ginkgo biloba is also known as Ginkgo biloba, Gongsun Tree and Duck Foot Tree. Its family and genus belong to Ginkgo biloba. Deciduous trees, diameter at breast height 4 meters. The bark of young trees is nearly smooth, light gray, and the bark of big trees is grayish brown, with irregular longitudinal cracks, long branches and short distances, and slow growth. Leaves alternate, scattered radially on long branches, 3-5 clusters on short branches, slender petiole, fan-shaped [ 1]
3. 1.2 Cinnamomum camphora
Cinnamomum camphora belongs to Cinnamomum camphora. It is an evergreen tree of Lauraceae. As high as 50 meters and hundreds of years old, it is a towering old tree and an excellent landscaping tree. [ 1]
3. 1.3 Magnolia grandiflora
The family and genus of Magnolia grandiflora is Magnoliaceae. Also known as Magnolia grandiflora, the crown is conical, the leaves are thick leathery, oval or inverted oval, the surface is dark green and shiny, and the back is densely covered with rust-colored fluff.
3. 1.4 banyan tree
Banyan tree is also known as banyan tree, mature tree and banyan tree. Ficus is an evergreen tree, belonging to Ficus of Moraceae, with a height of 20-30m and a DBH of 2m. The crown of the tree has been greatly expanded. [1] Among more than 300 kinds of landscaping and street trees, banyan is a common and familiar tree species.
3. 1.5 Sapindus indica
Sapindaceae and genus belong to Sapindaceae. Sapindus mukoraiensis is a deciduous or evergreen tree with a height of 25 meters. Branches spreading, branchlets glabrous, densely covered with many lenticels.
3. 1.6 Washington Palm (ia Filifera Linden, Washington. Wendland)
Palma is an evergreen tree with a height of 28 meters. The trunk is thick and straight, slightly enlarged near the base. Dead leaves drooping under the canopy.
3. 1.7 Magnolia grandiflora
Magnolia is also called magnolia, magnolia and so on. Families and genera are deciduous trees of Magnoliaceae, and the height of trees is generally 2-5 meters or as high as 15 meters. The flowers are white, big and fragrant, the first leaves are open, and the flowering period is about 10 days.
3. 1.8 Cedar
Cedar, also known as Cedar, is the general name of Cedar in Pinaceae. Its genus and species are similar in cone shape and are closest to Chinese fir. An evergreen tree with a pointed crown, with large branches extending and slightly drooping branchlets. The leaves are needle-shaped, hard, grayish green or silvery gray, scattered on long branches and clustered on short branches. [1] Cedar is a world-famous ornamental tree species, which is widely used in landscaping.
3. 1.9 Populus alba
Poplar is a deciduous tree of Salix in Salicaceae, that is, the height of deciduous poplar is 15~30 meters, the crown is broad, the trunk is white, the bark is white to grayish white, and the base is often rough. Branchlets covered with white fluff.
Ornamental green shrubs mainly include osmanthus fragrans, small wax, safflower, Euonymus japonicus, Euonymus japonicus in Phnom Penh, rhododendron, pyracantha fortunei, and yellow heart in Yunnan.
3.2. 1 osmanthus fragrans
Osmanthus fragrans belongs to Oleaceae. Osmanthus fragrans leaves are opposite, leathery, and inflorescences are clustered in leaf axils. The flowering period is from September to 10 and the fruiting period is from March to April of the following year. Osmanthus fragrans adapts to the vast subtropical climate.
3.2.2 Small wax (Ligustrum lucidum)
Small wax alias: rhubarb, rhubarb, Euonymus japonicus, belonging to Ligustrum of Oleaceae, semi-evergreen shrub, generally about 2 meters high, up to 6-7 meters; Branches densely pubescent. Leaves are thinly leathery, elliptic to elliptic-oblong, 3-7 cm long, pointed or obtuse at the top, rounded or broadly cuneate at the base, and pubescent at the lower part, especially along the midvein.
3.2.3 Acer truncatum
Red gooseberry belongs to Aceraceae of Hamamelidaceae, and it is a variety of red gooseberry. Evergreen shrubs or small trees. Bark is dark gray or light gray-brown, much branched. The shoots are reddish brown and densely covered with stellate hairs. Leaves leathery alternate, ovoid or oval.
3.2.4 Euonymus orientalis
Buxus buxus is an evergreen shrub with many branches and dense clusters. Leaves are long, oblanceolate, rectangular, oblanceolate or obovate.
3.2.5 Euonymus Phnom Penh
Buxus Phnom Penh belongs to Euonymus, a variety of Euonymus macrophylla. Evergreen shrubs or small trees. The leaves are opposite, ovoid to obovate, with sharp tips, golden yellow leaves and fine serrations. The leaves are light green and clean, with yellow and white stripes, beautiful and elegant. It is an ideal material for hedges and bonsai, and is suitable for the layout of doorways and central flower beds.
3.2.6 rhododendron
Rhododendron, alias Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron, Rhododendron and its branches, bracts, flower stalks and flowers all have brown flat coarse hairs. The leaves are papery, ovoid, 2-6 cm long, 1-3 cm wide, sharp, wedge-shaped at the base, rough hairs on both sides and dense back.
3.2.7 Pyracantha fruit. (Maxim. ) Li. )
Pyracantha fortunei, also known as fire fruit and military food, belongs to the evergreen shrub Pyracantha fortunei of Rosaceae. The lateral branches are short spines; Leaves obovate, long 1.6 ~ 6 cm, compound corymbose inflorescence, flowers 10 ~ 22, diameter 1 cm, white; Flowering in March-April; The fruit is nearly spherical, with a diameter of 8 ~ 10 mm and a spike shape. There are more than 20 fruits per ear10, ranging from orange to crimson, which is deeply loved by people. [3] It starts to turn red at the end of September and can be kept until the Spring Festival. It is an excellent flower viewing plant in spring and an excellent fruit viewing plant in winter. Suitable for small and medium-sized potted plants, or clustered and planted alone on the edge of grass in gardens.
3.2.8 Huang Xin
Huang Xin, Yunnan, also known as Jasmine Plum, Ying Chun Ye, Ying Chun Yunnan, Golden Belt, etc. It belongs to the genus Jasminum of Oleaceae, which is an evergreen semi-vine shrub with soft branches, long branches hanging in an arch shape and green branches in a quadrangular shape. The leaves are opposite, and three leaflets form compound leaves. The middle is larger, the leaflets are ovoid to oblong, and the length is 1 cm to 3 cm, and the tip is sharp, smooth and hairless. Flowers solitary in leaf axils, single or double, yellow corolla, saucer-shaped, petals 6-lobed. [2] It likes warm, humid and sunny environment, is not cold-resistant, avoids drought, grows well in fertile soil with deep soil layer, and should grow near the water. The beautiful plant shapes, green branches and bright yellow flowers in Sun Wong, Yunnan, give people a dazzling feeling. If different binding styles are applied, the decorative effect will be better. Commonly used as large and medium-sized potted plants, placed in several shelves, countertops and other conspicuous places in the living room; It can also be planted by the pool and rockery in the courtyard, and it is also suitable for hanging cultivation in flower fences or sloping highlands, and the effect is also good.