一、草地螟草地螟属鳞翅目螟蛾科,是一种暴食性害虫。以幼虫在大豆叶间取食叶肉,残留表皮及叶脉,影响大豆的生长发育及产量。严重时可造成缺苗断垄,甚至大面积吃光绝产。成虫为灰褐小型蛾子,体长8~12mm,翅展20~28mm,前翅生有黄白色条纹和斑纹,后翅生有不明显淡黄白色条纹。卵椭圆形,白色,卵面稍凸起,底部平。幼虫头黑色有白斑,前胸盾板黑色,有3条黄色纵纹。虫体黄绿或灰绿色。幼虫共有5龄, First, the grasshopper meadow borer Lepidoptera Pyralidae, is a binge pest. The larvae fed on the leaves of soybean leaves, epidermis and veins left, affecting the growth and yield of soybean. Severe lack of seedlings can cause broken ridge, and even eat a large area of ​​abortion. Adult gray-brown small moths, body length 8 ~ 12mm, wingspan 20 ~ 28mm, forewing students with yellow and white stripes and markings, hindwing students have not obvious yellowish white stripes. Egg oval, white, slightly raised egg surface, the bottom of the flat. Larvae white head with black, black chest shield, there are 3 yellow vertical stripes. Insect yellow-green or gray-green. Larva a total of 5 age,