青海云杉是我国青藏高原东北边缘特有树种。分布于我国青海、甘肃、宁夏、内蒙古等省区。树形高大,干形通直,是祁连山区的主要建群树种和优势树种。近年来,随着林业生态建设步伐的加大,对青海云杉种子的需求量不断增加,为了提高种子质量和品质,营建母树林十分重要。营造技术根? Qinghai spruce is the endemic tree species on the northeastern margin of the Qinghai-Tibet Plateau. Distributed in China’s Qinghai, Gansu, Ningxia, Inner Mongolia and other provinces. Tree tall, dry-shaped straight, the Qilian Mountains is the main group of species and dominant tree species. In recent years, with the increasing pace of forestry ecological construction, the demand for Qinghai spruce seeds has been increasing. In order to improve the quality and quality of seeds, it is very important to build a parent forest. Create technical roots?