我区地处西北,气候干寒,树种资源贫乏。但这里是银白杨、山杨、河北杨、毛白杨的天然分布区,引入的新疆杨生长亦表现良好。为了培育更好的适合我区生长的优良无性系,我们自1974年以来,开展了白杨派杂交育种的研究,主要以银白杨为亲本进行杂交组合。元月采集花枝,在温室内水培杂交,收获杂种在室内用营养杯育苗,5月初移苗至田间。试验结果表明,银白杨×新疆杨杂种成活率达58%,苗木生长良好,平均苗高3.0米左右,苗木分化显著,当年便可进行选择。经过逐年选择,获得了杂种优势显著的优良无性系品 My area is located in the northwest, the climate is dry and cold, lack of species resources. But here is the natural distribution area of ​​Populus tomentosa, Populus euphratica, Populus tomentosa and Populus tomentosa and the introduction of Poplar growth in Xinjiang also performed well. In order to cultivate better clones suitable for the growth of our region, since 1974, we have carried out the research on the cross breeding of poplar. The main hybrid poplar is Populus tomentosa. January collection of flowering branches, hydroponic hybridization in the greenhouse, harvest hybrids nursery nutrition Cup indoors, Miaomiao early in May to the field. The results showed that the survival rate of Populus tomentosa × Populus hybrids reached 58%, seedlings grew well, the average height of about 3.0 meters, seedling differentiation significantly, then can choose. After year-on-year selection, we obtained excellent clones with obvious heterosis