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天然分布在甘肃和青海省的青海云杉(Picea crassifolia Kom.)具有耐寒、耐旱、根系浅而发达、适应性强、生长快、材质良好、树形美观等特点,目前已被广泛用于营造用材林、水源涵养林及城镇庭园绿化。近年来,由于叶锈病的严重为害,影响了苗木的销售和造林成活率,成为当地苗圃生产中的一大难题。根据多年观察,发现青海云杉苗木叶锈病的病原
Naturally distributed in Gansu and Qinghai Province, Picea crassifolia Kom. Is characterized by its cold tolerance, drought tolerance, light and developed root system, strong adaptability, fast growth, good material, beautiful tree shape and so on. It has been widely used in Create timber forest, water conservation forest and urban garden greening. In recent years, due to the serious damage caused by leaf rust, affecting the sales of seedlings and afforestation survival rate, a local nursery production in a major problem. According to many years of observation, it was found that the pathogen of the leaf rust of Qinghai spruce seedlings