唐代名医孙思邈,对一般药物的采集和应用积累了丰富的经验。在他的名著《千金翼方》首录“药录纂要”中收载了230种常用中药的采集时间和干燥方法。他特别重视药物的采集时间,他说:“夫药采取不知时节,不以阴干暴干,虽有药名,终无药实。故不依时采收,与朽木不殊,虚费人功,卒无裨益。”这一论述说明了药物采集时间的重要性,也就是我们常说的“采药贵时节”的原因。有这样的民谚:“正月茵陈,二月蒿;三月四月当柴烧”意思是说采茵陈时应在它的苗期,(即春节后)方可有用,如果到了三、四月植株长高老化,就不堪入药了。采药为什么要注重时节 The famous doctor Sun Sijun in the Tang Dynasty has accumulated rich experience in the collection and application of general drugs. In his famous book “Qian Jin Yi Fang,” the first recorded “Accumulatory Summary” contained 230 kinds of commonly used Chinese medicine collection time and drying method. He paid special attention to the collection time of drugs, and he said: “The doctors do not know how to do it, and they do not use dry seasons to dry them up. Although they have drug names, they have no medicine at all. They do not harvest on time, they are not different from rotten wood, and they are irresponsible. There is no benefit from the death.” This statement explains the importance of the time of drug acquisition, which is why we often say that “the time of herbal extraction is expensive.” There is such a folk song: “Yueyue Yinchen, Artemisia halodendron; March April when wood burning” means that when picking Yinchen should be at its seedling stage, (that is, after the Spring Festival), it can be useful if it reaches three or four. If the plants grow old and aging, they are unreliable. Why should herbicide pay attention to the season