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当小米蚜在20—55头密度范围内,异色瓢虫日捕食量随猎物密度增大而趋于一个最大值。用 Holling 圆盘方程对观察结果进行拟配,其相关程度达极显著水准。
When the aphids in the 20-55 head density range, the predation on the number of ladybirds with the prey densities density tends to a maximum. Observations were fitted using the Holling disc equation to a very significant degree.