Small-diameter Larch has more extraction contents than adult Larch, so its drying rate is quicker, but small diameter Cathay poplar has the opposite properties.

• 小径木落叶松的抽提物含量小于成熟材,其干燥速度相对较快,而小径木大青杨的抽提物含量大于成熟材,其水分渗透性相对较差。