通过盆栽试验，研究浓度为300×10-6 mol·kg-1的丁香酚对小麦（Triticum aestivum）间作蚕豆（Vicia faba）、单作小麦和单作蚕豆根系形态的影响，以期探讨通过间作弱化化感抑制作用的可能性和机理，为间作群体的化感物质调控提供理论依据。结果表明：丁香酚对单作小麦和间作蚕豆单株根鲜重、干重、根长都有抑制效应，但对间作小麦和单作蚕豆的单株根鲜重、干重、单株根长有促进效应。具体表现在间作复合群体中，经丁香酚处理后，小麦的单株根鲜重、干重、体积以及根长较单作有明显的增加，同时单株蚕豆根鲜重、干重、体积以及根长较单作显著减少，说明小麦间作蚕豆能有效缓解小麦根际丁香酚的累积，同时产生它感作用，对蚕豆根系生长产生明显的抑制效应。
In order to provide theoretical basis for the regulation of intercropping system affected by allelochemical and explore the possibility way for weakening the allelochemicals through intercropping, pot experiment was carried out to research the effects of eugenol(300×10-6 mol·kg-1)on root morphology of intercropping wheat and faba-bean,sole wheat and sole faba-bean. Results show that: The eugenol had negative allelopathic effect on the fresh weight, dry weight and length of root in sole cropping wheat and faba-bean, but had positive allelopathic effect on the fresh weight, dry weight and length of root in intercropping and sole cropping faba-bean. Date showed that when treated with eugenol,the root fresh weight, dry weight, root volume and root length per plant of wheat increased significantly compared to monoculture, meanwhile,faba bean root fresh weight, dry weight, root volume and root length per plant reduces under monoculture. Wheat-fababean intercropped model can effectively relieve the accumulated concentration of eugenol around the wheat rhizosphere, while generates a sense of action and acted a significant inhibitory effect for faba-bean.
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