医药和农药都有一定的保质期,人一旦吃了过期的药品,非但治不好病,反而还会产生其他不良的后果;如果农作物用了超过保质期的农药后,它不但不能起到治病灭虫的效果,相反还会造成对农作物的药害。时下,正是农作物病虫害的高发期,也是使用农药最频繁的 Medicines and pesticides have a certain shelf life, once people eat expired drugs, not only does not cure illnesses, but also have other adverse consequences; if the crop with more than shelf-life of pesticides, it not only can not play a cure The effect of insects, on the contrary will cause damage to crops. Nowadays, it is the high incidence of crop pests and diseases, but also the most frequent use of pesticides