三倍体毛白杨生长快,材质好,树形美,抗污染能力强,是农田林网、城市园林、工矿绿化、西部大开发的首选树种。但三倍体毛白杨不产种子,且由于其枝条内含生根原基少,也无法利用枝条直接扦插繁殖。因此,生产上一般采用芽接和扦插相结合的方法进行育苗,即:用易生根的大关杨、太青杨、加拿大杨等作砧木,用三倍体毛白杨的芽作接穗嫁接,然后再扦插育苗。由于芽接时,一根砧木上能 Triploid Populus fast growth, good material, beautiful tree shape, strong anti-pollution ability, is the preferred tree species for farmland forest net, urban garden, industrial greening and western development. However, triploid poplar does not produce seeds, and because of its roots containing less root primordia, it can not use direct shoot propagation branches. Therefore, the production of budding and cutting methods are generally used for nursery, that is: the use of easy-rooting biguan Yang, too green poplar, Canadian poplar and other rootstock, with triploid poplar buds for scion grafting, and then cuttings Nursery. As budding, a rootstock can