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冷背药材，顾名思义就是那些不常用或用量小的药材品种。如此称呼，只是为了区分常用大宗品种，属于习惯上的称谓。比如地锦草和大叶藜，它们的别名都叫"血见愁"，共同具备止血的功效。《中药大辞典》所载的"血见愁"则是大叶藜，而在实际用药和经营当中，习惯称地锦草为"血见愁"，大叶藜因不经常使用，则被列入冷背药材。目前，我国已知的植物、动物、菌藻、矿石类药材已达万余个品种，其中只有几百个品种是常用药材，而剩余的绝大部分品种，因不常用或用量较小，都被习惯称之为冷背药材。

Herbal extracts, as the name suggests is that not commonly used or a small amount of Chinese medicines. Such a name is only to distinguish between commonly used large varieties, which are customary terms. For example, Dijincao and bigleaf quinoa, they are called "alias Teucrium viscidum", together with hemostatic effect. The "dictionary of Chinese medicine" contained "Teucrium viscidum" is Daye quinoa, in actual use and management, "said Dijincao used Galium, Chenopodium hybridum because they do not often use, is included in the herbal extracts. At present, China's known plants, algae, bacteria, animal drugs ore has reached more than 10000 varieties, of which only a few hundred varieties are commonly used herbs, and the rest of the most of the varieties, because no common or low dosage were used to call herbal extracts.

冷背药材品种繁多，用量又小，经营起来比较困难。不象常用大宗药材品种那样，不管价格高低，有货就不愁卖。而冷背药材有的品种则数年卖不出一斤，过期了就只好扔掉，经营商家的风险较大。同时，由于经营商家少，所有品种又难以完备，有的求购商家找不到货源，这无疑又增加了经营难度。但冷背药材并不是缺少货源，只是由于其不常用或用量小而没有得到经营者的重视。

A variety of herbal extracts, the amount of small business, it is difficult to. Unlike the traditional varieties of medicinal herbs, no matter how high or low the price is, there is no need to worry about selling them. Some varieties of herbal extracts and a few years can not sell a pound, expired had to throw away, big business risk management. At the same time, due to fewer business operators, all varieties and difficult to complete, and some businesses can not find the source of goods, which will undoubtedly increase the difficulty of operation. But it is not a lack of supply of herbal extracts, just because it is not commonly used or small amount without operator attention.