The eucalyptus tree

The zirno-cocoon tree belongs to the deciduous tree. Also known as gold silk, silk, etc. There are about 13 species of tree. Produced in Asia and the Americas, 5 species from China, and 3 species of cultivated species introduced from the Americas in 1911.

up to 30 meters high and has a chest diameter of 1 meter. The trunk is straight. Single leaf, large, 3 rotating, thin, large leaves, triangular ovoid or long egg shape, leaf-based leaf veins three out, the base veins have purple lumpy glandular spots, thin yellow-green. Flowers large shape, into a total flower sequence, flower crown joint petals, two lips, upper lip 2 cleft, lower lip 3 cleft, cleft often folds, pink purple, inside purple spots, development male 2, degenerative male 2 to 3. Usually flowers full of trees but no results, the result is fruit slender, like beans, 25 to 55 cm long, thickness of about 4 mm, 2 flaps cracked, most of the seeds, winged at both ends, with white fibrous silky hair.

are widely distributed in the Yellow River basin and the Yangtze River basin, especially in Jiangsu, Henan, Shandong, central and southern Shaanxi, mostly scattered behind the village house and in the valley and the lower part of the hillside. Happy light. Happy warm and humid climate, not resistant to cold. Suitable for deep fertile, loose soil, not resistant to drought and barren, also not resistant to moisture, low-lying water can not grow. Slightly resistant to saline. It grows faster and has a long life. The main root is obvious, the side root is strong, and the germination force is strong. Chinese ancient books have long been cultivated eucalyptus trees recorded, many places today still keep a small number of large trees. Breeding is multi-using the method of burying roots. Roots are dug from the roots of large trees in spring or autumn, and are buried flat or obliquely in spring. In places with strong mother trees, seeding methods can be used: spring sowing, low bed, strip planting, seeds per acre 1 to 2 kg. Planted in spring or autumn with 1 or 2 years of seedlings, the density should be slightly higher. It can also be updated with germination or planted with root seedlings. Grafting and insertion methods are also used. The main pests are the wax-coated dragonflies, the wild grasshoppers, the two-spot wave green turtle armor and so on.

wood soft and hard moderate, the structure is slightly rough, the texture is beautiful and shiny, not cracking, strong corrosion resistance. For high-end furniture and interior decoration materials. In ancient China, coffins and musical instruments were commonly used. Bark, leaves, and seeds are available for medicine. For excellent use of wood trees and green tree species around.

, the eucalyptus tree, which belongs to the same genus, has a long history of cultivation in China. Also known as the king of wood, yellow flowers, river. The difference between the flower and the eucalyptus tree is that the flower is pale yellow with purple spots and orange stripes on the inside; The trees are distributed in the south, north and northwest of Northeast China, south to Guangdong, northwest Guangxi, southwest to Yunnan, Guizhou, Sichuan and other provinces. Its wood can be made musical instrument Cersei base, the so-called "heaven and earth" from this word.