Introduction of arborvitae
Platycladus orientalis (common name) Cork (North China), Cedar (Hebei), Cypress (Zhejiang, Anhui), Bianque (Jiangsu Yangzhou), Xiangshu, Xiangkeshu (Hubei Xuanen, Lichuan) Plate 72:9-10 , arbor, up to 20 meters, breast diameter 1 meter; bark is thin, light gray-brown, longitudinally split into strips; branches are stretched or slanted upwards, saplings are ovate spires, and old tree crowns are wide and round; Branches of scales are thin, straight or obliquely upward, flat, arranged in a plane. Leaves squamous, 1-3 mm long, apex slightly blunt, exposed at the center of the branchlets obovate or rhombic, with striate glands in the middle of the back, leaf stalks on both sides, apex microinner, back There are blunt ridges, and there are glandular spots under the pointed head. The male flower is yellow, ovoid, ca. 2 mm long; the female flower is nearly spherical, about 2 mm in diameter, blue-green, and white powder. The cone is nearly ovoid, 1.5-2 (-2.5) cm long, nearly fleshy before maturity, blue-green, white powder, mature wood, cracked, reddish brown; two pairs of scales in the middle are obovate or elliptical, scale top There is an outwardly curved tip at the bottom. The upper 1 pair is narrow and long, nearly columnar, with a pointed tip at the top, and the lower 1 pair of scales is very small, up to 13 mm, dilute and not significant; seed oval Shaped or nearly elliptical, apex slightly pointed, taupe or purple-brown, 6-8 mm long, slightly ridged, wingless or very narrowly winged. During the flowering period from March to April, the cones mature in October.
Produced in southern Inner Mongolia, Jilin, Liaoning, Hebei, Shanxi, Shandong, Jiangsu, Zhejiang, Fujian, Anhui, Jiangxi, Henan, Shaanxi, Gansu, Sichuan, Yunnan, Guizhou, Hubei, Hunan, northern Guangdong and northwestern Guangxi. Tibet Deqing, Daban and other places have cultivation. It is vertically distributed in Jilin Province at an altitude of 250 meters, in Hebei, Shandong, Shanxi and other places up to 1000-1200 meters, in Henan, Shaanxi and other places up to 1500 meters, in the central and northwest of Yunnan, up to 3,300 meters. There are natural forests in the valleys of Xinglong, Hebei, Taihang Mountains in Shanxi, the Weihe River Basin north of the Qinling Mountains in Shaanxi, and the Lancang River Basin in Yunnan. Afforestation is often used in the Carboniferous Mountains, sunny slopes and plains in the north of the Huaihe River and in the North China. North Korea also has a distribution. Model specimens were collected from North China.
The wood is yellowish brown, rich in resin, fine in material, oblique in texture, strong in corrosion resistance, and has a specific gravity of 0.58. It is solid and durable. It can be used for construction, appliances, furniture, agricultural tools and stationery. Seeds and twigs of raw scales are used as medicine. The former is a strong tonic, the latter is a stomachic medicine, and it is a diuretic for cooling astringent and diarrhea. It is often cultivated as a garden tree.
Alias: Cedar (Hebei), Xiangshu, Xiangkeshu (Hubei Xuanen, Lichuan), Phellodendron (North China), Cypress (Zhejiang, Anhui), Pingsong, Bianque (Jiangsu Yangzhou)
Platycladus orientalis is a special tree species in China. Bark reddish brown, longitudinally split. Branchlets are flat. Leaves scaly, small. Hermaphroditic, globose, solitary. The cone is nearly oval. Seeds long ovate, wingless. The arborvitae is light, but the seedlings and saplings have certain shade tolerance. It is more resistant to cold and has poor wind resistance. Drought-tolerant, moist, but not flood-resistant. It is resistant to barren and can grow on slightly acidic to slightly alkaline soils. Slow growth. Extremely long life. Seeds can be treated with warm water before sowing. The seedling method is mostly bed type or large field type. Generally, it is planted in spring, and the seedlings are unearthed about 10 days after sowing. The main afforestation sites are selected from the mountain slopes and semi-sun slopes below 1,500 meters above sea level, as well as light saline and alkaline land and sand land. After the whole land preparation, the seedlings will be planted, and the places where conditions permit can also be broadcast live. The main pests are Platycladus orientalis, S. sylvestris, and Pinus sylvestris.
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