１９９５年从北京林业大学毛白杨良种繁育基地引进８个毛白杨优良无性系，在白银市两个国营苗圃进行适生性选择试验，不同砧木不同嫁接方法育苗和不同砧木鞭条生产试验。经过连续４ａ的试验，选出了适宜白银市推广的４个优良无性系、３种优良砧木，以及春季育苗的最佳方法。 In 1995, 8 Populus tomentosa clones were introduced from Populus tomentosa Breeding and Breeding Base of Beijing Forestry University. The experiment was conducted in two state-owned nurseries in Baiyin City. Different grafting methods were used to produce seedlings and different rootstocks. After continuous 4a test, selected four suitable clones to promote Silver City, three kinds of good rootstocks, as well as the best method of nursery in spring.