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各种形状的植物叶片,是鉴定植物、进行植物分类的一个重要的依据。将各种叶片采集来后,用各种颜料将它们拓印下来,制成系统的叶片拓片,以便于集中辨认,这对于巩固学生的基础知识,启发学生对自然科学的爱好,会起到一定的作用,而且还可以指导学生自己动手制作。经用彩色颜料拓印下来的叶片,它的轮廓和叶脉基本上是清晰的,而且操作简便,易于保存。现根据科普出版社翻译出版的《生物——植物》一书中载有的拓印植物叶片的方法及我们的经验体会简要介绍如下: (一) 采叶根据教学、实习或作业内容,有目的地采集叶片。例如,准备拓印各种不同形状的叶片时,可分别采取卵形、圆形、椭圆形、扇形、披针形等
Various shapes of plant leaves, is to identify plants, plant classification is an important basis. After all kinds of leaves are collected, they are printed out with various pigments to make the system of leaf rubbings for centralized identification, which will play a certain role in consolidating students ’basic knowledge and inspiring students’ love of natural science The role, but also can guide students to make their own hands. The leaves, which have been color-imprinted, are largely clear and simple in outline and veins, making them easy to handle and save. Now according to popular science publishing house translated “Bio - Plant” book contains the method of printing plant leaves and our experience is as follows: (A) mining leaves according to teaching, internship or homework, purposeful To collect leaves. For example, when preparing to print a variety of different shapes of leaves, they may take oval, round, oval, fan-shaped, lanceolate, etc.