从1983年起,对毛白杨、河北杨的扦插繁殖育苗及其机理进行了研究,研究出“多代循环繁殖新方法”,无需任何处理,也无需地膜覆盖,使大田育苗成活率稳定在80％左右;同时研究出快速、简便、繁殖系数高的优树根萌条培育新技术,为毛白杨、河北杨优树的无性系测定、无性系育种和无性系造林创造了条件。 From 1983 onwards, Populus tomentosa, Hebei poplar cutting propagation and its mechanism were studied, developed a “multi-generational cycle of breeding new methods”, without any treatment, without film mulching, field survival rate of seedling stabilized at 80 %. In the meantime, a new technique for rapid, simple and high propagation coefficient of Euphorbiaceae was developed, which provided the conditions for clonal determination, clonal breeding and clonal afforestation of Populus tomentosa and Populus euphratica.