Toona sinensis, also known as Toona sinensis flower, Toona sinensis head and Toona sinensis bud, belongs to Toona sinensis family. Originally from China, it is a perennial woody vegetable. It is mainly distributed in Shandong, Anhui, Henan, Hebei, northwestern Guangxi, southern Hunan, Sichuan and other provinces, among which Toona sinensis in Taihe, Anhui, Toona sinensis in Moudong, Shandong and Toona sinensis in Jiaozuo, Henan are the most famous. For example, Taihe Toona sinensis was sent to Chang 'an as a tribute as early as the Tang Dynasty. In recent years, Toona sinensis bud is not only a traditional vegetable loved by urban and rural people, but also has entered hotels and guesthouses. At the same time, it is also exported to Southeast Asian countries and is very popular in the international market.

Besides being edible, the leaves, skins, roots and fruits of Toona sinensis have certain medicinal functions. Mash the fresh Toona sinensis head with a little salt and an equal amount of garlic, and apply it to the affected area to cure sores and carbuncle. The young leaves of Toona sinensis, Cunninghamia lanceolata and Maple are divided into equal parts, decocted in water, and the dregs are taken to treat filariasis; Toona sinensis skin is cool, which has the function of clearing heat, drying dampness and stopping bleeding. Xianglingzi is used to treat common cold, gastrointestinal stagnation, abdominal distension and rheumatoid arthritis.

Toona sinensis grows rapidly, its trunk is straight, with no knots and few scars. Its wood is ruddy in color, clear in texture, smooth and beautiful in plane, and fragrant in smell. It enjoys the reputation of "China Redwood" in the international market.

Toona sinensis is a perennial deciduous tree, which can be as high as 10 meter. Leaves alternate, with odd pinnate compound leaves, 6- 10 pairs of leaflets, with large leaf scars, 40 cm long and 24 cm wide. The leaflets are oblong, pointed, 10- 12 cm long and 4 cm wide. The young leaves are purplish red, and the leaves are green, with reddish-brown back and slightly beaten. Panicle terminal, pendulous, bisexual, white, fragrant, small, bell-shaped, ovary conical, 5-loculed, with 3 ovules per locule. Style shorter than ovary, new fruit, narrowly elliptic or nearly elliptic, about 2 cm long, reddish brown, leathery and bell-shaped when mature. It blooms in June, and the fruit matures from 10 to 165438+ 10. Oval shape, long wooden wings, small seeds, low germination rate, high oil content and edible.

Toona sinensis likes temperature, which is suitable for cultivation in areas with average temperature of 8- 10℃, and its cold resistance increases with seedling age. One-year-old seedlings planted directly may be frozen at about-65438 00℃. Toona sinensis likes light and is more resistant to moisture. It is suitable for growing in fertile and moist soil around rivers and houses, and sandy loam is generally better. The suitable soil pH value is pH 5.5-8.0.

There are many varieties of Toona sinensis in China, which can be basically divided into purple Toona sinensis and green Toona sinensis according to the different colors of buds and cotyledons. Purple Toona sinensis includes black Toona sinensis, red Toona sinensis, Jiaozuo Toona sinensis and Ximou Toona sinensis. Green Toona sinensis includes green Toona sinensis and pholiota adiposa. Different varieties of Toona sinensis have different characteristics. The crown of Toona sinensis is generally open, the bark is grayish brown, the spores are purplish brown, the first buds are purplish red, shiny and fragrant, with less fiber and more oil; Toona sinensis, erect crown, blue or greenish brown bark, slightly fragrant and less oily.