采用高温水蒸气处理和加热处理固定大青杨木材压缩变形，并对两种处理结果进行比较。
The wood of poplar is compressed, then the compression deformation is fixed by high temperature steam and heating.
水蒸气后处理法中大青杨压缩变形恢复率最低，为- 3%左右；落叶松压缩变形恢复率最高，为11.6%左右。
During the water steam treatment after compression, the recovery rate of Ussuri Poplar is -3%, the lowest one, while that of Larch is 11.6%, the highest one.
年轮生长的功率谱测定检出，大青杨年轮生长存在2.5、3.2、6.3年的周期，年轮生长的周期性主要是受气象因子影响所致。
The measurement of power spectra of growth ring demonstrates the variations of period every 2.5, 3.2, 6.3 year under the influence of climatic factor.
最后，根据上述研究结果，确定了30 mm厚小径木落叶松和大青杨锯材的干燥基准，提出了改善小径木锯材干燥质量的有效措施。
At last, final drying schedules of small-diameter lumbers of Larch and Cathay poplar were developed according to the result of this research, and Suggestions were given to improve drying quality.
最后，根据上述研究结果，确定了30 mm厚小径木落叶松和大青杨锯材的干燥基准，提出了改善小径木锯材干燥质量的有效措施。
At last, final drying schedules of small-diameter lumbers of Larch and Cathay poplar were developed according to the result of this research, and Suggestions were given to improve drying quality.
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