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杨树是重要的速生用材树种,是我国北方营造用材林、防护林和“四旁”绿化的主要树种。国内外杨树造林的经验表明,用引进的杨树造林,常获得很好的效果。解放前,我国曾从国外引进钻天杨(Populus nigra cv.‘Italica’)、加杨(P.canadensis Moench.)和卢加杨(P.×euramericana(Dode)Cuinier cv.‘Lloydii’)等,但只有零星栽植。新中国成立后,在查明、利用原有杨树和培育新品种的同时,积极开展了杨树引种工作。
Poplar is an important species of fast-growing timber and is the main tree species in the north of our country to create timber forests, shelterbelts and “all around” greening. The experience of poplar afforestation at home and abroad shows that afforestation with imported poplar often obtains very good results. Before the liberation, China imported Populus nigra cv.’Italica ’, P. canadensis Moench. And P. × euramericana (Dode) Cuinier cv.’ Lydidi ’ Only scattered planting. After the founding of new China, in identifying, using the original poplar and cultivate new varieties at the same time, actively carry out poplar introduction.