【摘要】 为明确河西地区田埂苦豆子条带节肢动物群落结构及对相邻玉米田捕食性天敌发生密度及生物控蚜功能的影响，开展了系统调查和对比研究。结果表明：6—7月，苦豆子条带保有高密度的棉长管蚜和豌豆蚜，可保育瓢虫、捕食蝽、草蛉等优势捕食性天敌，成为田边重要的天敌保育场所。与没有苦豆子条带的对照玉米田相比，蚜虫高发期毗邻苦豆子条带的处理玉米田瓢虫和捕食性天敌的种群密度分别增加1.5倍和1.3倍，捕食性天敌与蚜虫的益害比增加2.3倍，蚜虫的种群密度降低了1.8倍。本研究证实苦豆子是河西地区一种重要的天敌保育功能植物，为今后利用其进行农作物害虫生态调控提供了科学依据。更多还原

【Abstract】 In order to clarify the arthropods community structure in Sophora alopecuroides strips along field ridge of Hexi region, and its effects on the density and biological control services of predatory enemies in adjacent corn field, systematic investigation and comparative study were carried out. The results showed that S. alopecuroides strips maintained high densities of Acyrthosiphon gossypii and Acyrthosiphon pisum from June to July, and conserved various predatory natural enemies such as ladybugs, predatory bugs, and lacewings, serving as an important conservation site for natural enemies on the field edge. During the aphid epidemic period, compared to the corn fields without S. alopecuroides strips, the densities of ladybugs and predatory natural enemies in corn fields with S. alopecuroides strips increased by 1.5 times and 1.3 times, respectively. The predator-to-aphid ratio increased by 2.3 times, while the density of aphids decreased by 1.8 times. This study confirms that S. alopecuroides is an important conservation functional plant for natural enemies in Hexi region, which provides a scientific basis for using it in ecological control of crop pests in the future.更多还原