Xuesong information

cedar

Alias: Cedar, Himalayan Cedar, Himalayan Cedar

Family: Pinaceae

Genus: Cedar

Latin name: Cedar Deodara (Roxb. )g.don。

Cedar is the national tree of Lebanon.

summary

There are 4 species of conifers belonging to Cedar, Pinaceae, among which 3 species are from China Mountain and the other is from West Himalaya. In English, some evergreen conifers with fragrant, red or reddish wood are also called cedars. Giant cypress, North American cypress and some juniper (called red cypress) are similar to cedar wood and are used to make boxes, pencils, wardrobes and so on. The oil extracted from it is also used in cosmetics. Atlantic Cedar (C. atlantica), short-leaved Cedar (C. brevifolia), Himalayan Cedar (C. deodara) and Lebanese Cedar (C.Li Bani) are all real Cedar. They are all tall trees with spreading branches and irregular crowns. The bark of young trees is dark gray, smooth, brown when mature and cracked into scales. The leaves are acicular triangle, tough, scattered along long branches, and densely clustered at the top of short branches. Ye Sucun 3? 6-year-old, 2 resin channels per leaf, female cone green or purplish, barrel-shaped, with resin, inserted on short stalks; Wood scales are covered by overlapping width and width, and each scale has a claw-like protrusion. Cypress wood is light and soft, with resin, which is not easy to get wet. It is an important building material in the country of origin. Aromatic oils can also be obtained by distillation. Many species of Himalayan cedar and Atlantic cedar are common ornamental plants in North America, especially along the Pacific coast and the Gulf coast. It is difficult to distinguish the four species of cedar, and interspecific hybridization can occur. Therefore, some experts think that these four tree species may all be geographical varieties of Lebanese cedar.

Distribution of leaves and cones of Cedar in Li Bani in Lebanon

Native to the western Himalayas, from Afghanistan to India at an altitude of1300-3300m; China was introduced from 1920, and now it is cultivated in major cities in the Yangtze River basin. Cedar can grow well in Qingdao, Xi, Kunming, Beijing, Zhengzhou, Shanghai and Nanjing.

morphological character

Evergreen trees, with spreading branches, irregular whorls and slightly drooping branchlets. The bark is grayish brown, which splits into scales and peels off when it gets old. Leaves are spirally scattered on long branches and clustered on short branches. The leaves are needle-shaped, hard, tapering, light green to blue-green. Dioecious, sparse and identical, with a single branch at the top. The cones are oval to oval-ovoid, and the seed scales and seeds are scattered at the same time after maturity, and the seeds have wings. The flowering period is from June 10 to June 1 1, and the flowering period of male cones is about10 days earlier than that of female cones. The cones matured in the second year (10).

Ecological habit

Originated in Himalayan region, it is widely distributed in Bhutan, Nepal, India and Afghanistan, and its vertical distribution height is 1300-3300m. The tropical climate from warm temperate zone to Central Asia with annual precipitation of 600- 1000 mm grows best in the middle and lower reaches of the Yangtze River in China. Strong cold resistance, large seedlings can withstand short-term low temperature of -25℃, but in hot and humid climate conditions, they often grow poorly. I prefer light, but my childhood is a little covered. Big trees need enough light, otherwise they will grow badly or wither. The requirements for soil are not strict, and both acidic soil and slightly alkaline soil can adapt. Deep, fertile and loose soil is most suitable for its growth, and it can also adapt to sticky loess and barren dry land. Drought resistance, water resistance and moisture resistance. Shallow roots and poor wind resistance. The resistance to sulfur dioxide is weak, and high concentration of sulfur dioxide in the air often leads to plant death, especially when new buds germinate in April-May.

Most cedars have the peculiar smell of males and females. In addition, due to the unexpected flowering period, the natural pollination effect is poor. In order to get full seeds, artificial pollination is needed.

Edit this section landscape application:

Cedar is a world-famous ornamental tree species, with tall and beautiful trees. Indian folks regard it as a sacred tree. It is most suitable for solitary planting in the center of lawn, building hall, square or both sides of main building, and at the entrance of garden gate. The big branches at the lower part of its trunk spread out from near the ground, which is not bitter for many years and can form a lush and majestic crown. In addition, it is also very spectacular to plant on both sides of the garden road to form a tunnel.

Propagation and cultivation

Generally, it is propagated by sowing and cutting. Sowing can be carried out in the middle and late March, and the sowing amount is 75 kg/hectare. You can also sow early to increase the disease resistance of seedlings. Choose sandy loam with good drainage and ventilation as seedbed. Soak the seeds in cold water for 1-2 days before sowing, and then dry them before sowing. After 3-5 days, the seeds began to germinate for about 1 month, and the germination rate reached 90%. Pay attention to shading at seedling stage to prevent the harm of Rhizoctonia solani and cutworms. Annual seedlings can reach 30-40 cm high and can be transplanted in the next spring. Cutting propagation can be carried out in spring and summer. Spring should be before March 20, and summer is best in late July. In spring, cutting off the annual thick branches of young mother trees and treating them with rooting powder or 500 mg/L NAA can promote rooting. Then insert it into sandy loam with good ventilation, water it fully, and build a double-layer shade shed for shade. In summer, semi-lignified branches should be selected as cuttings. In addition to strengthening shading, plastic film should be covered to keep humidity. Callus can be formed 30-50 days after transplanting. At this time, 0.2% urea and 0. 1% potassium dihydrogen phosphate solution can be used for external fertilization.

Breeding seedlings can be transplanted after 1-2 years in bed. Transplantation can be carried out in February-March. Plants need to carry earth balls and erect poles. The plant spacing is from 50 cm to 200 cm, and gradually increases. Topdressing for 2-3 times during the growth period generally does not require shaping and pruning, but only sparse dead branches and densely planted weak branches in the canopy. Botrytis cinerea can be controlled by spraying benadryl or zineb, and scale insects, moths and butterflies can be controlled by spraying omethoate and trichlorfon.

The original evergreen tree is 60-80m high and 3-4.5m in DBH. The trunk ends are straight, the big branches rotate irregularly, spread flat, the twigs hang down, and the lower branches cling to each other, forming a tower-shaped crown. The bark is gray-brown, smooth when young, and cracked into scales when old. The leaves are needle-shaped, blue-green, 2.5-5 cm long, closed at the top, spirally scattered on long branches, dioecious on short branches, rarely coextensive, and solitary at the top of cones. The female cone was purple at first, and then turned pale green; Male cones are almost yellow. The flowering period is10-1month, but the male cone blooms about 7- 15 days earlier than the female cone. The cones are oval, erect and mature in the second year. It needs a mild and cool climate and deep and well-drained soil in the upper layer. I like sunshine, but I am also quiet, shade-tolerant, in acidic soil and slightly alkaline.

Sexual soil can adapt and grow on cohesive loess and barren dry land; However, in waterlogged depressions or places where the groundwater level is too high, it will grow poorly or even die, and it is a shallow-rooted tree species. Easy to be blown down by the wind. Young leaves are extremely sensitive to sulfur dioxide and have weak resistance to tobacco damage. Seedling growth is slow. Usually, male plants bloom after the age of 20, and female plants bloom and bear seeds after the age of 30. Because of the different flowering periods, the natural pollination effect is poor. It is usually necessary to collect and store pollen in advance, and artificial pollination can be carried out when the female Qionghua is mature to obtain more high-quality seeds. Usually propagated by sowing or cutting. Sowing can be done in late March, and the sowing amount is about 5 kg per mu. It will germinate and be unearthed in about 15 days. The seedlings need a shade shed. Cuttings are usually carried out in spring and autumn. Soaking the base of cuttings with 500PPm NAA for 5 minutes can promote rooting. After insertion, a 1-2-layer shading shed should be built, covered with plastic film and strictly shaded. About 30 ~ 50 large leaves form callus after insertion. At this time, 0.2% urea solution and 0. 1% potassium dihydrogen phosphate solution can be used for root fertilization. Propagation seedlings can be transplanted in seedbed 1-2 years later. For leaf transplantation in February and March, the plant needs to bring a ball and erect a pole. The row spacing of the first transplanted plants is about 50 cm, and the row spacing of the second transplanted plants should be expanded to 1-2 meters. Top dressing should be applied 2-3 times during the growth period. Generally, there is no need to trim branches, just remove diseased dead branches and weak branches in the dense crown. Diseases and insect pests are prone to occur at seedling stage, especially Rhizoctonia solani and cutworms. Other pests include grubs, giant bag moths, Dendrolimus punctatus, Dendrolimus punctatus, red wax scale, termites, etc. , to control in time. There are 4 species belonging to the same genus * * *; Cedar is produced in China; Short-leaf chicory, Atlantic chicory and Lebanese chicory are produced abroad. The latter two have been introduced and cultivated in Nanjing, Hangzhou, Lushan and other places for many years. Cedar is one of the world-famous ornamental trees in gardens. It has strong dust-proof, noise-reducing and sterilization capabilities, and is also suitable for greening trees in industrial and mining enterprises.

Lebanese cedar (C. Li Bani) is an evergreen conifer introduced from Japan, which is dioecious and has different flowering periods. It has become a world-famous ornamental tree species because of its tall and beautiful shape. Cedar is cold-resistant and drought-tolerant, and has strong adaptability to soil. As long as the drainage is good and there is no air pollution, it can grow well, be easily transplanted and have a high survival rate.

Additional remarks

Cedar, golden pine, Aralia elata, the master of the world and Japanese golden pine are also called "the five largest garden trees in the world", and are called "the king of plants" or "the holy tree" in the Bible.

Edit this Duan Xuesong essential oil.

fir wood

Latin scientific names of Cedar: (Sabina vulgaris) Junipers Virginia Pencil Cypress, red)； Sabina vulgaris; Atlantic Cedar (Cedar) (white)

Family name: Berberidaceae; Pinaceae Pinaceae

Plant species: trees

Location of extraction: wood

Extraction method: distillation

Volatility: slow

Attribute: masculine

Origin: North America, Morocco

Traits:

1. Red cedar: colorless and transparent, woody, somewhat similar to sandalwood, but dry; 2. Bai Xuesong: yellow and sticky, with the fragrance of resin, faint turpentine flavor, similar to sandalwood flavor.

Gas smell

Wood, a bit like sandalwood, but drier.

Waiguan

Virginia Cedar is a tall redwood, native to North America. Another Atlantic cedar is produced in Morocco, but the curative effect of the essential oil produced by these two trees is not much different.

chemical composition

Alcohol-cedrol

Sesquiterpenes-juniperterpenes and cedrene

Apply history and related myths

Cedar is a Semitic language, which means spiritual strength, and it is also a symbol of the eternal belief of Semitic people. One of the earliest aromatic substances used by human beings is often used as incense in temples, which gives people a mysterious impression. This oil was widely used by ancient Egyptians, especially when making mummies. Egyptians made coffins and masts out of cedar wood. Cedar was once used to build temples and other large buildings, but now it is mostly used to make small objects, such as boxes and pencils, because cedar will deform under certain conditions. Due to overuse, some cedar varieties used in antiques (Lebanese cedar, a close relative of Atlantic cedar) are now very rare.

In the East, when there is no sandalwood essential oil, people use cedar to treat gonorrhea. In North America, it is used to treat bronchitis, tuberculosis and skin diseases.

Mithvidat is a century-old medicine for detoxification, including cedar. Cedar is now the main raw material of perfume.

work efficiency

Antibacterial, astringent, diuretic, softening, expectorant, bactericidal, insecticidal, calming and nourishing.

Psychotherapy effect

The soothing effect of cedar can calm nerves and anxiety, and it is also helpful for meditation.

Physical efficacy

It is more suitable for treating chronic pain than acute symptoms. It is a regulator of glands and nervous system, so it can restore the body to normal state and keep the internal environment constant.

Its main function is in the respiratory tract. Because of its antitussive and expectorant properties, it can improve bronchitis, cough and runny nose. More phlegm can be treated with cedar because it has the effect of "dryness".

It is also very important for reproductive and urinary system, such as cystitis, especially burning pain. Cedar can help and regulate renal function.

In addition, it can also relieve the pain of chronic rheumatism and arthritis.

Skin curative effect

Its astringent and antibacterial properties are most beneficial to oily skin, and of course it can also improve facial blisters and acne skin. It can also help to eliminate scabs, pus and some chronic diseases, such as eczema and psoriasis. Excellent conditioner can effectively resist scalp seborrhea, dandruff and baldness, and it has obvious skin softening effect when used in harmony with cypress and frankincense.

Essential oil suitable for mixing with it

Benzoin, bergamot, cinnamon, cypress, frankincense, jasmine, juniper, lavender, lemon, bodhi flower, orange flower, rose and rosemary.

Matters needing attention

High concentration may irritate the skin, and it is best not to use it during pregnancy.