“预防为主 ,综合防治”的植保工作方针 ,已成为我国广大植保工作者的共识。由于它提倡充分利用各种自然控制因素和尽可能减少化学农药用量 ,将有害生物控制在经济损害水平以下 ,强调生态系统的良性循环和保证人类赖以生存的环境质量 ,因此符合我国农业生产持久稳定发展要求的 The principle of plant protection with “prevention as a priority and comprehensive prevention and control” has become the consensus of the majority of plant protection workers in our country. Because it advocates to take full advantage of various natural control factors and minimize the amount of chemical pesticides, and control the pests below the level of economic damage, emphasizing the virtuous circle of ecosystems and ensuring the quality of the environment upon which human beings depend, Stable development requirements