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青海云杉(Picea Crassifolia)是我国西北地区的常绿针叶树种,在青海省分布较广,多生长在海拔2,400—3,550米处。青海云杉能耐干冷气候(年平均气温低于2℃),生长快,材质好,是青海省用材林、水源涵养林和绿化观赏的优良乡土树种。青海云杉历来用种子繁殖,苗期生长缓慢,7—9年方能出圃。采用露地扦插则很难生根。为了缩短育苗周期,加速苗木生长,我们于1981年开始,在本省大通县东峡林场(海拔2,680米)的塑料大棚内,连续六年进行扦
Picea crassifolia is an evergreen conifer species in Northwest China. It is widely distributed in Qinghai Province and grows at an altitude of 2,400-3,550 meters. Qinghai spruce can tolerate dry and cold climate (annual average temperature below 2 ℃), grow fast, good material, is Qinghai Province timber, water conservation forest and green ornamental fine native tree species. Qinghai spruce has always been breeding seed, seedling growth is slow, 7-9 years before the garden. It is very difficult to root with open cuttings. In order to shorten the nursery cycle and speed up the growth of seedlings, we began to carry out sticks for six years in a plastic greenhouse in Dongxia Forest Farm (2,680 meters above sea level) in Datong County,