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近年来,玉米螟危害日趋严重,造成玉米茎秆折断、掉穗、破粒、籽粒霉烂,严重影响玉米的产量和质量。现行的防治方法,一般只能控制一代危害,而对于二代危害防效甚微。玉米螟二代危害期间,由于植株高大,田间郁闭,使用药剂防治非常困难,弊病很多。敌敌畏滞留熏蒸是防治玉米螟的新方法,其特效期长达40天以上,可兼治一、二代玉米螟,且操作简单,摆脱了过去那种逐棵投药的繁重劳动。
In recent years, the corn borer harm increasingly serious, resulting in corn stalk break, fall ears, broken grain, rotten grain, seriously affecting the yield and quality of corn. The current methods of prevention and control generally can only control the harm of the generation, but little effect on the prevention and control of the second generation. Corn borer second generation hazards, due to tall plants, the field canopy closed, the use of chemical control is very difficult, many shortcomings. Dichlorvos stasis fumigation is a new method of preventing and controlling corn borer. Its special effect period is more than 40 days, which can cure both first and second generations of corn borer, and its operation is simple. It has got rid of the arduous labor in the past.