毛白杨是我省推广的速生树种之一。它在我区的平川、丘陵均有分布,栽培历史久。因其生长快、寿命长,材质优良,树干高大通直,树姿雄伟壮丽,已成为我区“四旁”绿化和农田林网化的重要树种。毛白杨在我国的分布范围广,主要分布在黄河流域各省,南部可达江苏、浙江一带。广阔的分布区域造成了毛白杨种内产地间的生长差异。在育苗和栽培实践中,我们 Populus tomentosa is one of the fast-growing tree species in our province. It is in my area of ​​Hirakawa, hills are distributed, a long history of cultivation. Because of its fast growth, long life, good material, straight tall trunk, tree pose majestic, has become my area “four sides” greening and farmland network of important species of trees. Populus tomentosa in our country a wide range of distribution, mainly in the provinces of the Yellow River Basin, south up to Jiangsu, Zhejiang area. The broad distribution of the area caused by the growth of Populus tomentosa within the differences. In nursery and cultivation practices, we