毛白杨是个生长快、材质好、经济价值高的优良树种,最适于平原地区四旁生长,但由于当地毛白杨母树少,种子不易得,而一般插条繁殖生根又难,苗木产量低,所以远远不能满足广大群众栽植毛白杨的迫切需要。为响应毛主席“绿化祖 Populus tomentosa is a fast growth, good material, high economic value of the fine tree species, the most suitable for the growth of the four sides of the plains, but the local white poplar less mother, not easy to get the seeds, but the general breeding of cuttings is difficult, cuttings yield is low, so Far from meeting the urgent needs of broad masses of poplar cultivation. In response to Chairman Mao "greening ancestors