《新疆农垦科技》编辑部:最近,我发现集市上,一些小商贩设农药出售摊。他们卖的农药,有些不象是当年出厂的,也不知失效了没有?有的还真假难分,望贵刊多介绍一些有关测定农药是否失效和识别真假的办法,以方便广大农户。深表感谢。 “Xinjiang Land Reclamation Science and Technology” Editorial Department: Recently, I found the market, some small vendors set up pesticide stalls. Some of the pesticides they sell are not the same as the ones they were manufactured in that year, nor do they fail. Some are really fake and difficult. I hope your magazine will introduce some measures to determine whether the pesticide has failed and whether it is true or not, so as to facilitate farmers. Thank you very much.