二化螟俗称钻心虫,造成水稻枯鞘、枯心和白穗。二化螟每年发生4代,第1代危害早稻,第2代危害迟熟早稻和中晚稻,第3代危害一季晚稻及双季晚稻,第4代危害迟熟晚稻。 Chilo suppressalis commonly known as boring worms, resulting in the dead of rice sheath, withered and white spike. Chilo suppressalis occurs 4 generations per year, the first generation endangers the early rice, the second generation endangers the late rice and the late rice, the third generation endangers the first season late rice and the double season late rice, the fourth generation endangers late maturity late rice.