茯苓是一种常用中药材,全国年产量达数百万公斤。搞好茯苓的收获和加工,对于提高药材质量,减少损耗,提高经济效益关系很大。但是,在收购工作中经常遇到因收获和加工方法不妥而出现的质量低劣的药材商品,外观主要表现有片面粗糙、赤白不分、泥沙混杂、 Radon is a commonly used Chinese herbal medicine, and its annual output reaches millions of kilograms. Doing a good job of harvesting and processing is of great importance to improving the quality of medicinal materials, reducing losses, and improving economic efficiency. However, in the acquisition work, there are often poor quality medicinal products that appear due to improper harvesting and processing methods. The appearances are mainly one-sided, red and white, mixed sediment,