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本文首次用扫描电子显微镜观察了莲叶柄管状分子离体次生壁，发现了一些新的精细结构。莲叶柄管状分子次生壁的第二级构架包括两类“垂直线系统”：一类较细，结构简单，为次生壁物质在螺旋细丝之间固定位置上的简单填充；第二类“垂直线系统”较粗，其间有若干条细的垂直线，结构也较复杂，并且在第一级构架（螺旋加厚）和第二级构架（垂直线系统）交汇处形成带有孔洞的特殊结构。
In this paper, we observed the isolated secondary wall of tubular stem of lotus petiole with scanning electron microscope for the first time and found some new fine structures. The second-level framework of the secondary wall of the tubular stem of the lotus stem includes two types of “vertical line systems”: one is thin and simple in structure, which is a simple filling of the secondary wall substance in a fixed position between the spiral filaments; The “vertical line system” is coarser, with several thin vertical lines in between, and the structure is also more complex, and the hole with the hole is formed at the intersection of the first-level framework (spiral thickening) and the second-level framework (vertical line system) Special structure