植物是药材的丰富来源 ,植物药是人类有史以来长达五十个世纪中赖以治病的基本药物。到了科学发达的现代社会 ,虽然人们已能人工合成许多药物 ,但是植物药的重要性仍然不减当年。西药为人类医疗保健作出的巨大贡献是毋庸置疑的 ,但在生产时往往带来严重的环境污染 ,而且成本较 Plants are a rich source of medicinal herbs, which are essential medicines for the treatment of disease for more than fifty centuries. In the scientifically advanced modern society, although people have been able to artificially synthesize many drugs, the importance of botanical drugs remains undiminished. Western medicine has made great contributions to human health care. There is no doubt about it, but it often brings serious environmental pollution when it comes to production, and the cost is relatively low.