徒手切片,是切片中最简单的一种。制作时不需要特殊设备,简便易行,适用于基层科研单位的研究或中等学校的示范教学。适于制作徒手切片的植物材料有双子叶草本植物的根、茎、叶柄、幼嫩木质枝条顶端以及普通植物的叶子。这种方法不适用于非常柔软、水分过多及坚硬的材料。制作方法切取茎或叶柄的一小段,长约2厘米。以左手的拇指和食指夹住材料,食指横向稍高,拇指稍低,材料比食指略高或近于等高。右手横握 Slices are the easiest slice of slicing. Production does not require special equipment, simple and easy, suitable for research at the grass-roots units or demonstration teaching in secondary schools. Plant materials suitable for making uncooked slices are the roots, stems, petioles of dicotyledonous herbs, the tips of tender woody shoots, and the leaves of common plants. This method does not apply to very soft, oily and hard materials. Production method Cut stem or petiole a short section, about 2 cm. The left thumb and forefinger grip the material, the index finger slightly higher horizontal, slightly lower thumb, the material is slightly higher than the index finger or near high. Right hand grip