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对小麦、油菜、棉花三种街接作物上主要瓢虫食料麦长管蚜、油菜蚜、棉蚜进行了捕食功能反应研究,分别建立了数学模型。瓢虫对不同种类蚜虫功能有异,对油菜蚜、棉蚜食量比麦蚜高27.4％和41.5％。此可做为七星瓢虫以瓢治蚜,不同蚜类瓢蚜比掌握的依据。并初步提出了对麦长管蚜和棉蚜的“抢食现象”和“补食现象”,平均食蚜量分别提高15.5～38.3％和1.9～7.4％。
A predator-prey function, the main Ladybugs feeding aphid, rape aphid and cotton aphid, were studied on three kinds of wheat, rapeseed and cottonseed crops. The mathematical models were established respectively. Ladybugs have different functions to different kinds of aphids, and the appetite of cotton aphid is 27.4% and 41.5% higher than that of wheat aphid. This can be used as a ladybird ladybird governance aphids, different aphids snail aphids than grasp basis. And preliminarily proposed “snatch phenomenon” and “food supplement phenomenon” to Aphis gossypii and Aphis gossypii. The average aphid population increased 15.5-38.3% and 1.9- 7.4% respectively.