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试验研究了七星瓢虫对刺槐蚜和绣线菊蚜的捕食功能反应．捕食者与猎物的功能反应均属于ＨｏｌｉｎｇⅡ型，经Ｘ２测验，其理论值与观察值很接近，说明模拟后的各方程可用来描述瓢虫的功能反应．七星瓢虫对刺槐蚜和绣线菊蚜的理论最大捕食量，三、四龄幼虫明显大于一、二龄幼虫．而且七星瓢虫对不同蚜虫的捕食量有一定的差异
The predation functional response of Coccinella septempunctata to Robinia pseudoacacia and Aphis gossypii was studied experimentally. Predator and prey functional responses are Holing Ⅱ type, the X2 test, the theoretical value and the observed value is very close, indicating that the equation after the simulation can be used to describe the ladybug’s functional response. Coccinella septentrional Robinia pseudoacacia and Diplodocus aphid the theoretical maximum predation, third and fourth instar larvae were significantly larger than the first and second instar larvae. Moreover, the ladybugs have a certain difference in the predation amount of different aphids