近几年来,随着产业结构调整,经济作物种植面积不断加大。从露地到保护地,常年有经济作物种植,且茬口交错,布局交叉,致使害虫的种类多,越冬基数高,种群数量大,危害严重。而农民是一家一户种植,难于统防统治,且普遍存在着重治轻防,总是在害虫发展到已经形成危害后才开始治,又片面依赖于化学农药,由于长期使 In recent years, with the adjustment of industrial structure, the area planted with cash crops has been constantly increasing. From open fields to protected areas, perennial cash crops are planted, and stubble staggered, layout cross, resulting in many types of pests, high base of winter, large population, serious harm. However, peasants are one family to grow and are hard to control and defend their rule. In addition, peasants are prevalent and heavily guarded. They have always started to rule after pests have become harmed and are unilaterally dependent on chemical pesticides. As a result of long-term