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本研究对三种造林密度大青杨的生长量进行了调查,经过分析得出结论:造林密度对大青杨的各生长量(平均苗高、苗高生长量、平均胸径、平均单木材积)都有显著影响,都随着造林密度的增加而减小,呈显著的负线性关系。考虑成活率、保存率和成本因素,建议生产造林密度2500株/hm2为宜或更小。
In this study, we investigated the growth of three Populus davidiana plantations. After analysis, we concluded that the planting density had no significant effect on the growth of Populus davidiana (average seedling height, seedling height growth, average breast diameter, average single timber volume ) Had a significant impact, all with the increase of planting density decreases, showing a significant negative linear relationship. Considering the survival rate, conservation rate and cost factors, it is recommended that the production of planting density of 2500 plants / hm2 is appropriate or smaller.