毛白杨种条内先期生成根原基数量少,分布集中,扦插繁殖不易成活。华北大部地区回春晚,春季短,降水稀少,空气相对湿度很低,不利于田间扦插成活。硬枝扦插容器育苗针对上述问题,将插穗进行药剂处理 Populus tomentosa within the first generation of root primordia a small number of distribution focused on cutting propagation is not easy to survive. Rejuvenation in most parts of North China in the spring, short in spring, precipitation is scarce, air relative humidity is very low, is not conducive to cutting survival in the field. Hard cutting cuttage container nursery For the above problems, cuttings for pharmaceutical treatment