关键词: 胶合板材, 杨树无性系, 立地控制, 密度控制, 修枝, 优化栽培模式

Abstract:

Based on the results of more than ten year' s scientific research and practice, some key techniques for cultivating poplar veneer glued wood were summarized systematically.The results were as follows :(1) Selecting appropriate poplar clones for various cultivation zones according to their growth rate and wood quality.(2) Choosing good sites being suitable for poplar clone growing (at least SI ≥18 m).(3) Adopting reasonable planting density which can produce more timbers to meet the need of plywood(the tree spacing should be more than 5 m ×5 m).(4) Using correct planting methods for different soil conditions, however, large seedling with 2-year-old root and 1-year-old stem (seedling height >4 m) were advocated.(5) Taking effective measures to tend the stand, the most effective measure was interplanting with crops.(6) Pruning was neccessary to produce non-node timber, but pruning method, pruning intensity and pruning season should be controlled properly.If the 6 measures mentioned above were carried out, the poplar forests with a high yield and high quality could be ensured.In order to provied some theoretical basis for cultivating poplar veneer glued wood, 4 optimum cultivation patterns were also established using the method of two dimensions system.

Key words: Veneer glued wood, Poplar clones, Site control, Density control, Pruning, Optimum cultivation patterns