正确处理引种和育种的关系 杨树改良工作的根本目的应是加速一个地区的良种化进度,提高生产效率,把引、选、育结合起来,合理地运用,是最正确的途径。但重育轻引却曾是我国杨树改良中一度出现的倾向,如早在50年代中后期,我们就引进了当时欧洲主栽著名品种——健杨、晚花杨、波兰15号、马里兰德、莱比锡杨、格尔里杨等,稍后又引进了沙兰杨和Ⅰ—214,但不重视利用研究,没有建立一块品种比较林和区域化试验林,致使这些品种长期停留在苗圃阶段,听任群众(生产单位)自发地扩散用 Correctly deal with the relationship between introduction and breeding The fundamental purpose of the improvement work of poplar should be to speed up the progress of the planting of a region and improve the production efficiency. It is the most correct way to combine quotation, election and education and rationally use it. However, the re-education of light remediation was once the proverbial phenomenon of poplar improvement in China. As early as the mid-to-late 1950s, we introduced some of the most famous European cultivars at that time - Jian Yang, Ye Hua Yang, Poland 15, Maryland Germany, Leipzig Young, Gerry Young et al. Later introduced Sallam and I-214, but did not pay attention to the use of research, did not establish a species comparison forest and regional test forest, resulting in long-term stay of these varieties in the nursery stage , Let the people (production units) spontaneously spread with