在植物学教学中,叶的结构既是一个重点,也是一个难点。学生只有掌握了叶的结构,才能进一步了解叶的光合作用、呼吸作用和蒸腾作用等生理功能。在实验教学中,显示叶结构的方法通常采用徒手切片及叶下表皮临时装片。这两种制片方法虽然简单,但效果不甚理想。因为叶结构的这种局部观察方法,不利于学生建立叶结构的整体概念。因此我们从显示叶三维结构的角度,对叶组织制片技术作了一些探索,列示下表中: In botany teaching, the structure of the leaf is both a key and a difficult point. Only by mastering the structure of the leaves can students learn more about physiological functions such as photosynthesis, respiration, and transpiration of the leaves. In experimental teaching, the method of displaying the leaf structure is usually carried out by hand-slicing and temporary loading of the lower leaf epidermis. Although these two production methods are simple, the effect is not ideal. Because this partial observation method of leaf structure is not conducive to students to establish the overall concept of leaf structure. Therefore, from the perspective of displaying the three-dimensional structure of the leaves, we have made some explorations of leaf tissue production techniques and listed them in the following table: