参照北京林业大学毛白杨研究所对建国初期的“接炮捻”技术进行改进后运用于当前生产的三倍体毛白杨繁育技术 ,进行了大叶山杨的“接炮捻”自生根的初步试验 ,不但使大叶山杨扦插可以成活 ,还能形成自生根 ,保持了品种纯度 With reference to the Beijing popularization Institute of Populus tomentosa on the early founding of the “access gun twisting” technology to improve the current production of triploid Populus tomentosus breeding, Populus euphratica “shoots” self-rooting of the initial test, Not only to Populus euphratica cuttings can survive, but also the formation of self-rooting, maintaining the purity of varieties