北京杨引入我省后具有生长迅速、繁殖容易、树干通直圆满、材质好等优点,深受群众欢迎。但很多地区无论是大面积造林还是小片林、四旁植树都存在着密度过大的问题,严重影响了木材生长量, After being introduced into our province, Beijing Yang has the advantages of rapid growth, easy breeding, straight stem trunk, good material, etc., which are well received by the public. However, in many areas, whether large-area afforestation or small piece of forest, the planting of trees on all sides has the problem of excessive density, which has seriously affected the growth of timber.