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青海省过去对乔灌木树种的引种,开始带有很大的盲目性,以后虽注意了从同纬度或高纬度地区搜集材料,但多年引种的成功率只有14.3％(未含杨柳科树种),影响了这项科研工作的开展。在总结历年经验教训的基础上,从八十年代起,注意了专属的引种,从本省已有天然分布的属(genus)中搜集外区同属异种的原始材料。经过几年实践,用这一方法引种异地乔灌木树种取得了较好的效果。
In the past, the introduction of trees and shrubs in Qinghai Province started with a great deal of blindness. After paying attention to collecting materials from the same latitude and high latitudes, the success rate of introduction in many years was only 14.3% (excluding the species of willow trees) Affected the development of this research work. On the basis of summing up the experience and lessons from the past years, from the eighties onwards, we have taken note of the exclusive introduction of the original genus of the same genus in our province to collect the same foreign material. After several years of practice, using this method to introduce exotic trees and shrubs has achieved good results.