CAJ | 학술논문

采用木材切片法和光学显微技术，研究香椿木材的微观特征，分析年轮宽度、导管及纤维形态的径向变异。结果表明：髓心至第10年年轮宽度迅速增加，1～20 a间均保持旺盛的生长；早材和晚材的导管宽度、双壁厚、腔径由髓心向外逐渐增大，约19 a 后趋于平稳，早材导管宽度121．80μm，晚材导管宽度38．75μm，早材导管双壁厚度10．98μm，晚材导管双壁厚度16．49μm；纤维长度由髓心向外呈逐渐增大的趋势，18 a后纤维长度基本趋于稳定，纤维形态指标平均值分别为：长度1080．94μm，宽度26．76μm，长宽比40．25，双壁厚7．96μm，腔径18．80μm，壁腔比0．43。
채용목재절편법화광학현미기술，연구향춘목재적미관특정，분석년륜관도、도관급섬유형태적경향변이。결과표명：수심지제10년년륜관도신속증가，1～20 a간균보지왕성적생장；조재화만재적도관관도、쌍벽후、강경유수심향외축점증대，약19 a 후추우평은，조재도관관도121．80μm，만재도관관도38．75μm，조재도관쌍벽후도10．98μm，만재도관쌍벽후도16．49μm；섬유장도유수심향외정축점증대적추세，18 a후섬유장도기본추우은정，섬유형태지표평균치분별위：장도1080．94μm，관도26．76μm，장관비40．25，쌍벽후7．96μm，강경18．80μm，벽강비0．43。
Growth ring,vessel and fiber morphology of Toona sinensis wood were evaluated by using xylotomy and optical microscopy.The results were as follows:the growth ring width increased from pith to 10 -year old, keeping vigorous growth from 1 to 20 years.The width,double wall thickness and lumen diameter of vessel in early wood and late wood increased from pith to 19-year old,then tending towards stability.The width of vessel in early wood and late wood were 121. 80μm and 38. 75 μm,and the double wall thickness of vessel in early wood and late wood were 16.49 μm and 10.98 μm,respectively.The fiber length first increased from pith to 18-year,ending up with stability.The average fiber length,width,length to width ratio (L/W),double wall thickness,lumen di-ameter and double wall thickness to lumen diameter ratio (2T/D)were 1 080. 94μm,26.76 μm,40.25,7.96μm,18.80 μm,0.43,respectively.