引进外区优良树种,是丰富本地区森林资源的一项重要措施,我省地形南北狭长,地跨长江、黄河两流域,自然条件复杂,是林木引种的有利条件。解放前虽已有少量引种,但进展很慢。解放后在毛主席革命路线的指引下,开展了群众性引种工作,引进了不少优良树种,有的已在生产上推广应用,如法桐、刺槐、紫穗槐、水杉及大关杨等一 The introduction of excellent tree species in outer areas is an important measure to enrich the forest resources in this region. The long and narrow terrain of our province stretches across the Yangtze River and the Yellow River. The natural conditions are complex and favorable conditions for the introduction of forest trees. Although a small amount of introduction before liberation, but progress is slow. After the liberation, under the guidance of Chairman Mao’s revolutionary line, mass introduction was introduced and many excellent species of trees were introduced. Some of them have been popularized in production, such as Fatong, Robinia pseudoacacia, Amorpha fruticosa, Metasequoia glyptostroboides, one