利用光学显微镜、傅里叶变换红外光谱和扫描电镜对棕榈(Trachycarpus fortunei)叶鞘维管束纤维的结构及其生长变化的研究分析表明:(1)宏观上,叶鞘从叶基部至顶部颜色由白色逐渐变为棕褐色,薄壁细胞逐渐失活;(2)叶鞘自叶基部至顶端的木素相对含量逐渐增加,而纤维素和半纤维素相对含量则逐渐减少;(3)棕榈植物维管束纤维表面均被硅石颗粒覆盖,这些硅石颗粒的大量存在,对棕榈的耐腐性或起到一定的积极影响。 The structure and growth of vascular bundles of Trachycarpus fortunei were studied by light microscopy, Fourier transform infrared spectroscopy and scanning electron microscopy. The results showed that: (1) macroscopically, the color of the leaf sheath from the leaf base to the top gradually increased from white (2) The relative content of lignin increased gradually from the leaf base to the top of the leaf sheath, while the relative content of cellulose and hemicellulose decreased gradually; (3) The vascular bundles of the palm plant The surfaces are all covered with silica particles. The presence of these silica particles has a positive effect on the decay resistance of the palm.