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本文通过对七星瓢虫的捕食功能反应研究。结果表明，在自然变温情况下七星瓢虫对苹果绵蚜的捕食能力较强，能很好地批合Holling反应模型，其方程为Na＝0．804181745N／1＋0．002502293N。
In this paper, we study the predation function of Ladybug. The results showed that P. euphorbiae had a good ability of predation on M. gossypii at natural temperature, and could well fit the Holling reaction model. The equation was Na = 0.804181745N / 1 + 0.002502293N.