世界苗木质量研究的进展和趋势

从苗木质量概念、质旺评价研究的发展现状及未来发展方向出发，概要地综述了国际上有关研究所取得的成就。鉴于我国苗木质量研究和评价与国际先进水平存在的巨大差距，提出了由林木生理学家全面参与，国有林业企业积极配合，有计划地开展以提高根生长潜力为中心的全面控制苗木质量的苗木培育学研究。

Advances and Trend in Researches on theQuality of Tree Seedlings in the World

Abstract Proceeding from the development and trend in researches on the conception ofseedling quality and qualitative evaluation, a general review is made of the achievementsin researches on the tree seedling quality in the world. It is believed that the qualrtativeevaluation of tree seedlings has evolved from the perceptual stage around 1950s to therational stage after 30 years' researches and experiments, namely from the simple mor-phololgical grading to multiplecharacter integrated grading based on both the internalphysiological properties and the external morphological features. Especially the mostimportant trait, rooting potentiality, is grasped, by which rooting viability can be welljudged. Recently, the cultural measures to control the morphological features are prog-ressing to the target seedling raising, profitable to production areas, and suitable to pe-culiar sites. As a yawning gap exists between the researches on seedling quality evaluation in China and the advanced international level, it is suggested that all the tree phys-iologists in cooperation with the state forest enterprises should be engaged in a plannedstudy of seedling raising with promoting the rooting potentiality as the main so as to e-ffect an overall quality control of tree seedlings. This study will provide scientific datafor integrated seedling quality management during the entire course of seedling raisingwith targets defined at each different stage.