一、概念与目的引种驯化包含两个方面的内容,首先是变外地为本地,就是把一个树种引到它自然分布区以外的地区来栽培;其次是变野生为栽培。在引种实践中,经常遇到以下两种情况:一些外地树种引种到本地后,不加任何的人工干预就表现良好,直接带来经济效益,如水杉、法桐引入陕西关中地区后,自然生长良好,这种情况称为直接引种或称自 First, the concept and purpose Introduction and domestication contains two aspects, first of all the change is the local, that is, a tree species to its natural distribution outside the area to the cultivation; followed by the wild for the cultivation. In the introduction of practice, often encounter the following two situations: After the introduction of some foreign species to local, without any manual intervention on the good, direct economic benefits, such as Metasequoia, Fatong introduced Shaanxi Guanzhong region, the natural growth Good, this situation is called direct introduction or self