“国外杨树引种及区域化试验研究”专题是“七五”国家科技攻关重点项目“欧美杨良种选育”课题中的主要内容之一。该课题由中国杯业科学研究院林研所张绮纹副研究员主持,7省13个单位参加的协作项目。80年代初,从国际杨树委员会17个成员国引进的33个黑杨派中,筛选出美洲黑杨55号,2KEN8号,和欧美杨比利尼,N3016,NE222号,74号6个无性系。它们具有生长快,造林成活率高,树冠窄,干形直,抗天牛,材性好等特性,其 “Introduction and Regionalization of Foreign Poplar Experimental Study” is one of the main topics in the “Seventh Five-Year” national key scientific and technological project “Europe and the United States poplar breeding” subject. This topic is chaired by Zhang Qiwen, an associate researcher at the Institute for Forestry Research, China Cup Academy of Sciences, and a collaboration project involving 13 units in 7 provinces. In the early 1980s, from the 33 black poplar introduced by the 17 member states of the International Poplar Committee, the clones of Black Poplar 55, 2KEN8, and Poplarini of Europe, N3016, NE222 and 74 were screened out. They have the characteristics of fast growth, high survival rate of afforestation, narrow canopy, stem shape, resistance to pests, good material properties, etc.