甘兰夜盗在黑龙江省是为害甜菜的主要害虫之一,八月份为害甜菜严重,常常把甜菜叶片吃光,只剩下叶柄和叶脉,严重的影响了甜菜块根的产量和含糖。以前防治甘兰夜盗多是用666粉等化学农药,由于连年使用化学农药使害虫抗药性增强,药剂杀虫效果降低,同时因为使用化学农药造成对作物和环境的污染,为探索解决这一问题,我所 Bering is one of the major pests that harm beet in Heilongjiang Province. In August, the beet was seriously damaged and often eaten the beet leaves, leaving only petioles and veins, seriously affecting the yield and sugar content of beet root. Previous prevention and treatment of cabbage burglar is the use of 666 powder and other chemical pesticides, perennial use of chemical pesticides because of pest resistance, pesticide insecticide reduction, and because of the use of chemical pesticides on crops and the environment caused by pollution, to explore to solve this problem ,I