经济阈值(或经济阈限、经济阀限)的概念自50年代由某些昆虫学家(Stern et al.1959)正式提出以来,经不少人修正和补充,已逐步形成一套合理和可行的理论。尽管有人对该理论的前景表示怀疑(Norgaad 1976),但愈来愈多的人承认并开始使用它。在70年代趋于成熟的有害生物综合治理(IPM)理论吸收和同化了这份有用的营养,使之成为 Since the concept of economic thresholds (or economic thresholds, economic thresholds) was formally proposed by some entomologists (Stern et al. 1959) in the 1950s, with a few amendments and additions, a set of rational and feasible Theory. Despite the skepticism about the prospect of the theory (Norgaad 1976), more and more people acknowledge and begin to use it. The theory of integrated pest management (IPM), which matured in the 1970s, absorbs and assimilates this useful nutrient, making it