本期发表了两篇有关庆丰霉素效价测定方法的文章。1975年本刊曾发表过安徽省白湖农场试验站测定庆丰霉素效价的报告(见本刊2卷1期32页)。安康地区植保植检站根据两年的实验结果,对上述报告提出了不同看法。我们刊出此文,对开展学术讨论或有助益,亦可供进行这类工作的同志参考。四川省科委庆丰霉素协作组介绍了另一种方法,可供农业基层单位参考选用。 This issue contains two articles on the determination of the potency of januangmycin. In 1975, we published a report on the determination of the titer of pilocarpine in the White Lake Farm Experimental Station in Anhui Province (see Issue 2, Issue 1, Issue 32). Phytosanitary phytosanitary stations in Ankang Prefecture made different opinions on the above report based on the results of two years of experiments. We have published this article for reference to conduct academic discussions or to help other comrades who carry out such work. Sichuan Provincial Science and Technology Commission collaboration team introduced another method of green grass for agricultural grassroots units reference selection.