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云杉落针病防治的研究孙国忠（四川省森林病虫防治检疫总站）王志平（夹金山林业局）杨庆和（凉山州林业局）杨学成王瑛（九寨沟自然保护管理处云杉落针病（Ｌｏｐｈｏｄｅｒｍｉｕｍｐｉｃｅａｅ）是我省西部高山林区云杉人工更新幼林的重要病害。据１９９０年不完全统计...
Yang Guochong (Sichuan Forest Pest Control Quarantine Station) Wang Zhiping (Jiajinshan Forestry Bureau) Yang Qinghe (Liangshan Prefecture Forestry Bureau) Yang Xuecheng Wang Ying (Jiuzhaigou Nature Reserve Management Picea punctatus Lophodermiumpiceae) is an important disease of artificial regeneration of young spruce in spruce in the western mountainous area of our province. According to incomplete statistics in 1990 ...