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一、前言欧美杨(Populus×euramericana(Dode)Guim·er)是欧洲黑杨(P.nigraL.)和美洲黑杨(P.deltoides Marshall)的杂交品种和品种间杂交的总称。以前有人把他统称为加拿大杨(P.canadensis Moench)欧美杨具有生长快适应性广、经济价值大的特点,为世界各国广泛栽植。我所引种驯化欧美杨类品种的工作是从1962年开始的,先后从中国林业科学院、北京植物园、辽宁省杨树研究所等单位引种,到目前已定植保存46种,建立了原始材料繁育圃,原始材料汇集圃,区域化试验点。经过苗期观察和定植试验,各品种生长表现很不一致,有的
I. Introduction Populus × euramericana (Dode) Guim er is a hybrid of hybrids and varieties between P. nigra L. and P. deltoides Marshall. Someone once referred to him as P. canadensis Moench. Populus euphratica has the characteristics of rapid growth, adaptability and economic value, and is widely planted in various countries of the world. The introduction and domestication of the European and American poplar species I introduced from 1962 onwards, successively from China Academy of Forestry, Beijing Botanical Garden, Liaoning Province, Poplar Institute and other units introduced, so far has been planted to preserve 46 species, the establishment of the original material breeding nursery Raw materials collection garden, regionalization test point. After seedling observation and colonization test, the performance of all varieties is very inconsistent, and some