湖北林业科技

The author has analyzed the variation rule of Populus timber fibre length radial direction with the forest environment relations. The result indicates that the timber fibre length grows along with the tree age increases, grows fast in previous 3 years, grows slowly to the 4th year, tends to stable, but there is not big problem with site condition of the forest growing. Among the middle-age forest (4~7 years), the lumber is suitable to make paper with the requested length by 0.6~1.0 mm, such as blotting paper and so on. The mature forest (8 years and above) is suitable to make paper with the requested length by 0.8~1.1 mm, such as manifold paper and so on.