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紫苏叶是常用中药,为唇形科植物紫苏Perillafrutescens(L.)Britt.的干燥叶,具解表散寒、行气和胃的作用。《中国药典》九○年版在紫苏叶的性状项下规定:叶两面紫色或上表面绿色,下表面紫色。笔者在工作中发现我地区使用的商品紫苏叶以两面均为绿色,叶脉紫色者居多。这显然不符合现行《药典》的规定。而据紫苏叶产地的药农反映,该品在栽培过程中会因施用化肥(尿素等)而使叶两面变绿。为此,笔者从以下几方面进行了探讨比较。一、栽培试验及结果取叶两面均为紫红色的紫苏及野生野苏幼苗各若干棵,栽于同一小块田中。在其整个生长期内,分5次施尿素的稀溶液。结果经2
Basil leaf is a commonly used traditional Chinese medicine. It is a dry leaf of Perilla frutescens (L.) Britt. It has the functions of relieving the symptoms of cold, gas and stomach. The 1990 edition of the Chinese Pharmacopoeia states that under the traits of perilla leaves, the leaves on both sides are either purple or green on the upper surface and purple on the lower surface. In the work, the author found that the basil leaves of the commodity used in our region are green on both sides, and those with purple veins are mostly. This obviously does not comply with the provisions of the current Pharmacopoeia. According to the medicine and peasants in the production base of perilla leaves, the goods will be green on both sides due to the application of chemical fertilizers (urea, etc.) during the cultivation process. To this end, the author conducted a discussion and comparison from the following aspects. First, the cultivation test and the results were taken on both sides of the leaves are purple red perilla and wild Yesu seedlings of several trees, planted in the same small field. During its entire growth period, a dilute solution of urea was applied 5 times. Result by 2