一、前言青海云杉是祁连山针叶林区的主要乡土树种,系常绿乔木,高达二十余米,干形通直园满,木材软硬适中,纹理通直,质地良好,是建筑、电杆、桥梁、造船、家俱等良好用材,也是造纸的上等原料。性耐蔽荫,历年来育苗都在阴棚遮荫的条件下进行,但本区阴棚材料缺乏,需到外地购买,人力、财力耗费极大。为了解决这一问题,提高苗 I. Foreword Qinghai spruce is the main native tree species in the coniferous forest area of ​​Qilian Mountains. It is an evergreen tree with a height of more than 20 meters. The stem is straight and full, with moderate soft wood and soft texture. The texture is straight and the texture is good. Electric poles, bridges, shipbuilding, furniture and other good timber, but also the finest raw paper. Sex shade, over the years nursery shade shady shade conditions, but the lack of shelter material in this area, need to go to the field to buy, human, financial costly. In order to solve this problem, raise seedlings