一、前言“种源”是指同一树种具有共同生态适应性的一个种子生产区。种源是林木群体的概念。同种源其基因频率基本上是平衡的,各个体的形态、生理、生态等特性大致相同。种源试验是林木的群体测定,也是研究林木群体遗传变异的依据。在当前林木育种工作中,它是充分利用林木基因资源的一种主要选种手段,是良种选育工作的基础。为林业生产直接提供速生、丰产、优质、稳定 I. Preface “Germplasm” refers to a seed production area of ​​the same species with common ecological adaptability. The provenance is the concept of a forest group. The same source of its gene frequency is basically balanced, the individual’s morphological, physiological, ecological and other characteristics are roughly the same. Seed germplasm testing is a group measurement of trees and is also the basis for studying the genetic variation of tree populations. In the current forest breeding work, it is a major selection method to make full use of forest genetic resources, which is the basis of breeding breeding. For forestry directly to provide fast-growing, high yield, high quality and stability