一、玉米地下害虫 1.地老虎:又名地蚕、土蚕、切根虫,属鳞翅目、夜蛾科。每年可发生2—7代,其主要种类是小地老虎、大地老虎。地老虎的成虫在夜间活动,卵多产于杂草、枯草及作物根茬上,对灯光、糖酒醋混合液有趋向性。幼虫一般6龄。幼虫1龄期日夜咬食玉米幼叶,3龄后夜间咬食玉米苗基部嫩茎,甚至将断苗拖入洞内。 2.蝼蛄:又名土狗、属直翅目、蝼蛄科,1—2年发生一代,以成虫 First, the underground corn pests 1. To the tiger: aka silkworm, soil silkworm, cut rootworm, is a Lepidoptera, noctua family. Occurs 2-7 generations per year, the main species is small tiger, earth tiger. The adults of tigers are active at night. The eggs are prolific in weeds, hay and root stubble and tend to be mixed with light, sugar, vinegar and vinegar. Larvae generally 6 years old. The first instar larvae bite the young leaves of corn day and night, after the third instar bite corn sprouts on the base of young stems, and even broken seedlings into the hole. 2. 蝼 蛄: also known as the dog, is an Orthoptera, 蝼 蛄 family, 1-2 generation occurred a generation to adult