对四川盆地21世纪开始以来各年春季气温变化、小麦禾谷缢管蚜及其天敌发生情况进行了分析。结果表明,以2、3月为中心的春季气温时段性显著变暖,激活了以多种瓢虫为主的天敌,使其发生期提早、发生量增加、捕食时间加长,从而在最关键的穗期前、中期显著增强了天敌的控制力,最终导致小麦禾谷缢管蚜的发生呈现时段性衰减。 In the spring of the 21st century, the Sichuan Basin began to change its temperature in spring, and the incidence of wheat aphid and its natural enemies were analyzed. The results showed that spring temperatures around February and March were significantly warmer over time, activating natural enemies dominated by many kinds of ladybugs, making their occurrence earlier, increasing their generation and prolonging their prey time, The control of natural enemies was significantly enhanced before and during the panicle stage, which eventually led to a periodical decline in the occurrence of wheat aphid.