At last, according to the theory of Pest Population System Control, the biological control system of DBM was established and was practiced in the vegetable field.

• 最后根据害虫种群系统控制的理论与技术，以得到的小菜蛾生物防治的防治目标为基础，将上述各项生物防治措施有机地组合在一起，建立了小菜蛾生物防治系统，并在大田中进行了检验。