三化螟和纵卷叶螟是我市水稻上的重要害虫 ,尤其在水稻生长后期危害重、损失大。由于连续多年防治以杀虫单及其复配剂为主 ,使这些害虫对杀虫单的抗药性日益上升。近年来国内有关厂家研制开发出多种含生物杀虫剂的高效、低毒、低残留的新型杀虫剂 ,为筛选新的替代药剂 ,验证此? Borer and leaf roller is important rice on our city pests, especially in the late growth of rice endanger heavy losses. Due to the successive years of prevention and control with pest control alone and its compounding agents, the insecticide resistance of these pests is on the rise. In recent years, domestic manufacturers have developed a variety of bio-pesticides containing high efficiency, low toxicity, low residue of new insecticide, to screen for new alternative agents to verify this?