粟灰螟是京郊谷子上的重要害虫。过去采用的测报办法,是以田间卵量、灯光诱蛾数量或田间枯心苗的多少为防治的依据,但这些方法往往因设备和调查方法的不便,不能充分的反应防治适期,因而不易被群众接受。1963年我们根据田间成虫羽化比例的变化,分期进行了药剂防治,得到了不同的防治效果。 Corn borer is an important pest on the suburb of Beijing. The measures adopted in the past were based on the quantity of eggs in the field, the number of light-inducing moths or the amount of dry seedlings in the field. However, these methods are often not adequate due to the inconvenience of equipment and survey methods, Accepted by the masses. In 1963, according to the change of the fecundity ratio of the adult in the field, we carried out the phamaceutical control in stages and obtained different control effects.