一代大螟(玉米钻心虫),集中危害春玉米,常造成春玉米大量枯心死苗,毁窝重载。目前,农户防治一代大螟均采用化学农药防治,损工耗资,效果不理想。这里简介一种剥鞘去虫卵,防治一代大螟的新法。其方法是:在一代大螟的卵孵盛期,在早栽长势嫩绿的玉米地,用手逐株剥下玉米植株基部3个叶的叶鞘,带出田间集中消毁。剥鞘去虫卵与化学农药防治相比具有以下优 A generation of Sesamia (corn borer), focus on endangering spring corn, often resulting in a large number of spring corn dead heart seedlings, destruction of nest heavy load. At present, farmers use chemical pesticides to prevent and control the generation of Sesamia inferens, which results in unsatisfactory results. Here is a new method of sheath removal of insects eggs, prevention and control of a generation of Sesamia inferens. The method comprises the following steps: during the hatching period of the first generation of Sesamia inferens, the leaf sheaths of the three leaves of corn plants are peeled off by hand in the early growing green corn field, which is led out of the field to be concentratedly destroyed. Peeling and removing insects eggs compared with chemical pesticide control has the following advantages