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人们很早就知道,药材的质量与其产地有密切关系。历代医家常把某地出产的质优效良的药材,称为“地道药材”。为什么同一种药材,会因地而异呢?科学工作者经过研究探索认为,这种差异主要与人体所需的微量元素在地球表面分布的不均衡有关。在地道药材产区,某些微量元素含量往往高于其它地区。而地道药材则具有吸收积累某种微量元素的特性,其微量元素含量大大高于非地道药材。如贵州微量元素科技开发公司的朱梅年、胡兆华同志,对贵州省大方县的地道药材天麻的研究结果表明,产地土壤中微量元素
It has long been known that the quality of medicinal herbs is closely related to their place of origin. Historical physicians often refer to medicinal herbs of good quality and good quality produced in certain places as “natural medicinal herbs.” Why does the same medicinal material vary from place to place? Scientists have studied and explored that this difference is mainly related to the unbalanced distribution of trace elements required by the human body on the surface of the earth. In the authentic drug-producing areas, the content of certain trace elements is often higher than other areas. The authentic medicinal materials have the property of absorbing and accumulating certain trace elements, and their trace element content is much higher than that of non-authentic medicinal materials. For example, Zhu Meinian and Hu Zhaohua of Guizhou Trace Elements Technology Development Co., Ltd. conducted research on the gastrodia elata in Dafang County, Guizhou Province, and found that the trace elements in the soil of the producing areas.