(一) 方法步骤 1.将几个菠菜叶片剪碎在研钵里,加入少量丙酮、碳酸钙和二氧化硅,迅速把叶片研磨成糊浆(以下称糊浆),将糊浆堆放在一玻片上,用另一玻片把糊浆抹平,此时糊浆就像摊在玻片上的一块平坦的绿色印泥。 2.将干燥的定性滤纸剪成约10厘米长1厘米宽的纸条,把纸条的一端剪去两角,以距这端约1厘米处为褶线,将滤纸条褶叠。手捏褶叠的滤纸条,轻轻地把褶线与玻片上的糊浆相 (a) Method Step 1. Cut several spinach leaves in a mortar and pestle, add a small amount of acetone, calcium carbonate and silicon dioxide, quickly grind the leaves into a paste (hereinafter referred to as paste), and pour the paste on On the glass slide, the paste is leveled with another glass slide. At this time, the paste is like a flat green ink pad spread on the glass slide. 2. Cut the dried qualitative filter paper into a piece of paper about 10 cm long and 1 cm wide. Cut one end of the paper strip at two corners, and fold it about one centimeter from the end to fold the filter paper strips. Squeeze the pleated filter paper and gently pluck the pleats with the paste on the slide