Qinghai spruce
Distribution of producing area
Produced in Qinghai, Gansu, Ningxia and Inner Mongolia.
Morphological characteristics
Trees, up to 23 m high, DBH 60cm. Annual branches are light green, biennial branches are light pink or brownish yellow, often covered with white or no powder, old branches are light brown to brown; winter buds are conical, and the tip of the persistent bud scale at the base of the branchlet is often spreading or inverted. Leaves quadrangular-striate, slightly curved or straight, long 1.0~2.5cm, ca. 2mm wide, apex obtuse or with obtuse tip, cross section quadrangular. Cones unisexual, monoecious. Cone cylindrical or oblong-cylindrical, long 7~11cm, diameter 2~4cm, mature in the current year, the dorsal part of the seed scale is partially green before maturity, the upper margin is purplish red, brown when ripe, drooping. The seeds are obliquely obovoid and forsythia is about 1.3cm. Wings Obovate, light brown
Growth habit
Slow growth, strong adaptability, can withstand low temperature of-30 ℃. Drought tolerance, barren tolerance, like neutral soil, avoid waterlogging, young trees are shade tolerant, shallow root tree species, poor wind resistance.
Garden use
It is suitable for solitary planting and group planting in gardens, and it is often used as shade trees and landscape trees.
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Sowing and Seedling raising techniques of Picea crassifolia
Qinghai spruce, Pinaceae spruce, evergreen tall trees. 1-year-old shoots light green-yellow at first and pink-yellow or pink-brown at later stage, more or less hairy; leaves quadrangular, slightly curved or straight, 1.2-3.5 cm long and 2-3 mm wide, apex obtuse, or with obtuse tip, cross section tetrahedral, with stomatal lines on all sides; flowers unisexual, monoecious. Cone conical, cylindrical or oblong cylindrical, pendulous, 7-11 cm long, 2-3.5 cm in diameter, seeds about 3.5 mm long, forsythia about 1.3 cm long, young fruit purple
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Seedling raising technique of softwood cuttings of European spruce
European spruce is an excellent tree species introduced from northern Europe in China. The tree grows fast. Because of its straight stem shape, wide adaptability, especially strong cold resistance, it has become not only an excellent timber tree species, but also an ornamental tree species for urban greening because of its beautiful tree shape and dense evergreen branches. Due to the direct introduction of seeds, the seedling growth is slow, it takes 5 years to get out of the nursery, and a large amount of foreign exchange is needed to introduce seeds, so the development is very slow. In order to speed up the promotion of this tree species and meet the needs of rapid development of forestry construction and urban and rural greening, I
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