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银纹夜蛾俗名豆青虫、量尺虫,属鳞翅目,夜蛾科。它是南方秋大豆(7月下旬至立秋播种)的主要害虫。幼虫蚕食叶片成缺刻或孔洞,甚至可将全叶吃光,仅留少数叶脉,造成落花落荚,豆粒不饱满,严重影响大豆产量。生活习性在秋大豆田,银纹夜蛾从卵到成虫,发生完整的一代。进入秋豆田产卵的成虫,发生在8月下旬至9月中旬。1979年成虫高峰期是8月28日,1980年是9月6目。在田间8月20日左右初见卵粒,8月底至9月上旬达产卵高峰。幼虫在9月上、中旬盛发,1979年防治适期是9月6日,1980年是9月15日。
Spodoptera litura common name Beansworm, the amount of scale insects, is a Lepidoptera, noctua. It is the main pest of southern autumn soybeans (sown in late July to early autumn). Larvae eroded leaves into nicks or holes, and even the whole leaf can be eaten, leaving only a few veins, resulting in falling pods, beans are not full, a serious impact on soybean yield. Habits In the autumn soybean fields, Spodoptera litura from eggs to adults, a complete generation took place. Into the autumn bean spawning adult, occurred in late August to mid-September. The peak of adult life in 1979 was August 28, and September 1980 was September 6. In the field around August 20 saw the egg, the end of August to early September reached the peak of oviposition. Larvae in September, the mid-Shengfa, prevention and control in 1979 is September 6, 1980 is September 15.