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毛白杨是培育大径级材的良好树种,对密度反应比较灵敏。因此,适时合理的调整毛白杨人工林的密度,是关系到发挥林木生产潜力和提高林分质量的重要措施。我场自1959年建场以来,已营造毛白杨纯林300余亩,林龄有的已达20年,由于密度过大延长了成材年限。为解决经营密度问题,根据胸径与冠幅的相关性,编制了毛白杨人工林经营密度表,以便于生产中参考。
Populus tomentosa cultivation is a good species of large-diameter timber, the density of more sensitive. Therefore, adjusting the density of Populus tomentosa plantation timely and reasonably is an important measure that relates to the potential of forest production and the improvement of stand quality. Since our establishment in 1959, our field has built more than 300 mu of pure white forest of poplar and has reached the age of 20 years. As the density is too large, the useful life of the plant is prolonged. In order to solve the problem of operating density, according to the correlation between DBH and crown width, the poplar plantation management density table was compiled to facilitate reference in production.