１９９３年．在大庆市红旗林场。定期、系统地调查了柳蛎蚧１龄固定若虫、蛹、雌性成虫的死亡率以及初孵若虫、２龄若虫、前蛹、预蛹、蛹的发育进度预测模型。经检验．１龄固定若虫、蛹、雌性成虫种群数量变动的预测模型精度分别为 ９７． ８０％、 ８７． ８４％和 ９７． １２％。初孵若虫、２龄若虫、蛹的发育进度预测模型精度分别为９５．７５％，９１．９０％和９５．２７％ 1993. Red Flag Forest in Daqing City. The mortality of the first instar nymphs, pupae and female adults of O. yunnanensis, and the prediction models of the developmental progress of newly hatched nymphs, second instar nymphs, pre-pupae, pre-pupae and pupae were investigated regularly and systematically. After inspection. The accuracy of prediction models for the population changes of fixed nymphs, pupae and female adults at the first instar was 97. 80%, 87. 84% and 97. 12%. The accuracy of prediction models for the developmental nymphs, 2nd instar nymphs and pupae were 95.75%, 91.90% and 95.27% respectively,