学生按高中《生物》课本的实验指导做实验四“叶绿体中色系的提取和分离”实验时．得到的色素提取液往往是含色素少的黄绿色或青绿色的液体，色素分离后的色素带不明显或不齐全。为什么叶绿体中的色素难提取出来？笔者利用暑假做了一些实验，查阅了《普通无机化学》、《有机化 The students did the experiment “Extracting and Separating the Chromosome in Chloroplasts” according to the experimental guidance of the high school “Biology” textbook. The resulting pigment extract is often a yellow-green or bluish-green liquid containing less pigment, and the pigment band after pigment separation is not obvious or incomplete. Why are the pigments in the chloroplast difficult to extract? The author used the summer vacation to do some experiments and consulted “Ordinary Inorganic Chemistry” and "Organization