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花旗松（P。dotsuArQme，。。。）是世界上最有价值的重要用材树种之一，广泛分布于北美洲西部的辽阔地区。我国在庐山、北京植物园、延安树木园等地曾有引种栽培。引进花旗松对丰富我国树种资源，提高木材产品的生产意义十分重大。l试验地概况试验地设在西北林学院火地缩教学?
Douglas Fir (P.dotsuArQme, ...) is one of the most valuable and important timber species in the world, widely distributed in the vast western part of North America. China has introduced cultivation in Lushan, Beijing Botanical Garden, Yan’an Arboretum and other places. The introduction of Citigroup to enrich our tree resources and improve the production of wood products is of great significance. l test to test the general situation located in Northwest Forestry Institute fire gentian teaching?