最近通过对山杨雌雄两性生物学和林学深入的研究表明,雌株较耐心腐。此项工作所探讨的问题是山杨雌雄株的萌蘖更新与根系结构的关系。研究对象是49年生根蘖起源的山杨纯林。下木为稀疏的榛子,土壤为暗灰色森林砂壤,具有较高的生产率。试验地设置在全苏林业技术学院林管区教学施业区2林班,生长条件类型为C_2和C_3。在每一生长条件类型中都设两块单独排列的试验标地,当山杨开花时确定雌雄属性。 Recent studies of hermaphroditism and forestry have shown that female plants are more resistant to decay. The problem discussed in this work is the relationship between the regeneration of male and female poplar plants and the root structure. The object of study is the pure-flowering Populus euphratica with 49-year-old root tillers. Under the sparse hazelnuts, the soil is dark gray forest sand, with high productivity. The experimental site was set in 2 forest classes in the teaching and administrative area of ​​the Forest Management District of Quan Su Forestry College and the types of growth conditions were C_2 and C_3. In each type of growth conditions are set up two separate test plots, when the poplar to determine the male and female properties.