我校1958年6月,在附近山区采集到20余种有毒植物,经过一系列的研究,其中有几种对臭虫特别有效,今特介绍于下: 1.药剂的配制 将龙舌兰、乌桕、苦蓼、岩蓼四种植物分别放于密闭锅中,加等量水,断续加热1小时,使药效不至因烈火而分解失效,又能使其 Our school in June 1958, in the vicinity of the mountains collected more than 20 kinds of poisonous plants, after a series of studies, of which several are particularly effective against bugs, now introduced in the following special: 1. Pharmacy Preparation Agave, , Polygonum, Polygonum four plants were placed in airtight pot, add equal amount of water, intermittent heating for 1 hour, so that the efficacy is not due to the decomposition of fire failure, but also make it