红点唇瓢虫Chilocorus Kuwanae Silvestri是杨圆蚧的主要捕食性天敌。在我国分布范围广,捕食能力强,对蚧虫种群数量有明显的控制作用。但过去尚未有过该虫对我国北方主要蚧虫捕食作用的系统研究。为了正确评价红点唇瓢虫对杨圆蚧的功能反应,我们于1989～1991年进行了此项研究。并通过捕食功能反应试验,寻找出红点唇瓢虫对猎物杨圆蚧的最佳捕食量,为蚧虫生物防治提供理论依据。 Chilocorus Kuwanae Silvestri is the predatory predator of Populus deltoides. In our country a wide range of distribution, predation ability, the number of population scale insects have obvious control. However, in the past, there was no systematic study on the predation of the insects on major scale insects in northern China. In order to correctly evaluate the functional response of the ladybug to the ladybug, we conducted this study from 1989 to 1991. And through the predation functional response test to find the red spot ladybug on prey Yangba Kui the best predation amount for the scale insect biological control provides a theoretical basis.