用Y形嗅觉仪测定了针叶小爪螨对其寄主植物 ,芬兰钝绥螨对针叶小爪螨的选择行为。结果表明 :针叶小爪螨对未受害的麻栎叶、栓皮栎叶和板栗叶都表现出较强的趋性 ,对槲树叶虽然也有趋性 ,但趋向程度不如前三者强 ,而松针和云杉对其有较强的忌避作用 ;用同一寄主植物的未受害叶片和除螨受害叶片测定时 ,则明显趋向于未受害叶片 ;而用同一寄主植物的除螨受害叶片和带螨受害叶片测定时 ,则喜欢选择带螨受害叶片。寄主植物受害与否以及有无叶螨存在 ,显著影响芬兰钝绥螨的趋性。芬兰钝绥螨对未受叶螨危害和受叶螨危害的寄主植物叶片均有趋性 ,但对后者的趋性反应更为强烈 ,对有叶螨的危害叶片和无叶螨的危害叶片的趋性反应之间也存在显著差异 The Y-shaped olfactometer was used to determine the selection behavior of A. niger to its host plant, Finnish Amblyseius mites. The results showed that: Acanthopanax septempunctata showed strong tropism to unharmed Quercus acutissima leaves, Quercus variabilis leaves and chestnut leaves, although they tended to be more virulent to quercus leaves, but the tendency was not as strong as the first three, while the pine needles And spruce had a strong repellent effect; the same host plants with unharmed leaves and mites damaged leaves were significantly tended to uninvolved leaves; and with the same host plant except mites damaged leaves and mites victims Leaf determination, you like to choose with mite victim leaves. Host plant damage or not and the presence or absence of spider mites, significantly affect the Finnish Amblyseius tropism. Finnish amblyseius mites did not have the spider mite damage and spider mites harm the host plant leaves have the tendency to tropism, but the latter’s more aggressive response to the spider mite damage leaves and spider mite damage leaves There is also a significant difference between the aggressive response