蒙古光瓢虫Exochomus mongol Borousky是蚧虫的重要天敌。引进、释放或人工助迁蒙古光瓢虫,最好是早春刚刚起蛰的成虫,2龄以后的幼虫,或者它们的蛹。对该虫的上述几个主要虫态的发生期采用历期预测法、有效积温法、温度指标与物候预测法,预测结果与实际调查基本相符。 Exochomus mongol Borousky is an important natural enemy of scale insects. The introduction, release or artificial removal of light ladybugs, preferably the early spring has just stung adult, after 2 instar larvae, or their pupae. The period of occurrence of the above mentioned several major insect states of the insect was predicted by the period, the effective accumulated temperature method, the temperature index and the phenology forecasting method. The forecasting result basically accorded with the actual survey.