一、群众杨(小×美+旱) 群众杨是以小叶杨为母本,美杨和旱柳的混合花粉为父本的人工杂交种。主干通直,树冠近塔形或大冠分枝型。小枝有棱,梢部微红,叶呈卵形。比较抗寒、抗旱、抗病虫,适应性强,在干旱瘠薄土壤或轻度盐碱地,生长均比北京杨、加杨好。如:潮白河林场在低湿 First, the masses Yang (small × America + dry) Populace Yang is a hybrid poplar with Populus as the female parent, the United States and Yang Liu hybrid pollen as the male parent hybrids. Trunk straight, near the crown or crown crown branch. Branchlets edge, tip red, leaves were oval. More cold, drought, pests and diseases, adaptability, in arid barren soil or mild saline, growth than Beijing Yang, plus Yang good. Such as: Chaobaihe farm in low humidity