运用种群系统控制的原理与方法 ,组建了叶菜类蔬菜主要害虫生态控制体系 ,用环境经济学方法评价了系统中生态控制技术应用于生产的实际效果 ,并与化学防治条件下的效益进行比较。结果表明 ,采用生态控制的方法 ,其经济效益、社会效益和环境效益远远高于化学防治。 Based on the principle and method of population system control, the ecological control system of the main pests of leafy vegetables was established, and the actual effect of ecological control technology applied to production was evaluated by the method of environmental economics, and compared with the benefit of chemical control . The results show that using ecological control method, its economic benefits, social benefits and environmental benefits are far higher than chemical control.