引言杨树适应性强,生长速度快,采伐周期短,经济效益高,易于繁殖栽培,是我国北方的优选造林树种。杨树有100多个种类。由于立地条件、种类不同,在物理力学性质上有很大差异。因此,对杨树材性进行研究,为合理开发利用杨树人工林资源提供理论参考,这是本项研究的目的。我们选择了黑龙江省分布面积大且具有 Introduction poplar adaptability, fast growth, short cutting cycle, high economic efficiency, easy propagation and cultivation, is the preferred afforestation tree species in northern China. Poplar has more than 100 species. Due to site conditions, different types, there are great differences in the physical and mechanical properties. Therefore, it is the purpose of this study to study the material properties of poplar and to provide a theoretical reference for the rational exploitation and utilization of poplar plantation resources. We have chosen Heilongjiang Province, which has a large distribution area