vascular tracheid

Tracheid characteristics of Picea koraiensis from natural stand in Liangshui area and plantation in Mao ershan area were studied.

本文分别对凉水地区的红皮云杉天然林和帽耳山地区的红皮云杉人工林的管胞性状进行了研究，方差分析结果表明：管胞长度、管胞直径和管胞壁厚度在各年轮间都存在显著差异。