Cyathula officinalis Kuan is one of the well-known chinese traditional herbs with a high demand and a long history. As a rule, most of herbs are cultivated in Bao xin, Tian quan, and Jin kou he, where the production usually have a good quality. In recent years, some new planting areas, such as Chongqin, Hubei, Hunan, are expanding its production. All the areas possess theirself characteristic of enviroment, cultivated varieties, planting techniques and post-harvest treatment, which may have effects on the q...
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