Qinghai spruce has a maximum of 245 patches and occupies 27.7% in all patches.
2
并提出青海云杉种实害虫综合治理的策略、原则以及评价青海云杉种实害虫综合治理的步骤和方法。
In addition, this paper also put forward the strategy and principle of integrated control of the seed pest, as well as steps and methods of evaluating integrated control.
3
云杉是青海省县主要的天然林资源,也是荒山造林和城镇绿化的优良树种。
Picea is not only major natural forest resources in Qinghai, but also fine tree species of afforestation and urban greening.