核桃是新疆特色林果的支柱产业，核桃黑斑蚜连续暴发成灾，给农民造成了巨大的经济损失，制约了新疆特色林果产业持续健康发展。课题组前期调查发现异色瓢虫是核桃黑斑蚜的优势天敌，充分发挥天敌控害作用是绿色防控蚜虫的重要途径。气候变暖是全球关注的环境问题，其不仅影响昆虫本身，更直接影响昆虫种间关系。而气候变暖在新疆干旱区表现尤为明显，以平均温度升高、极端高温幅度和频率增加为特征的气候变暖背景下异色瓢虫对核桃黑斑蚜的控害作用如何变化尚不清楚。项目拟通过室内实验明确恒温与波动性温度升高、极端高温频率和幅度增加条件下异色瓢虫对核桃黑斑蚜的直接捕食和非致死效应；同时监测田间自然条件下不同频率天敌干扰对核桃黑斑蚜种群的影响，结合田间多年核桃黑斑蚜和天敌种群动态及气象数据，旨在指导生产中更好地利用天敌，同时对全球气候变暖背景下综合评估天敌的控害作用、开发生物防治技术、揭示昆虫种间关系对极端气候的响应具有重要价值。

Chromaphis juglandicolawa is one of the major walnut pest and outbreaks frequently in recent years. It has caused huge economic losses and posed a serious threat to walnut production and industrial development of characteristic wood fruit in xinjiang. We found that Harmonia axyridis was the dominant natural enemy of C. juglandicolawa in the field. The natural enemies play a very important role in controlling insect. Climate change is an important environmental problem which has caused great concern around the world. Global warming is especially evident in the arid zone and directly affects the interspecific relationship of insects. But the control effect of H. axyridis on C. juglandicolawa is unclear under global warming. To explore the control effect of H. axyridis on C. juglandicolawa, exhaustive experiments were conducted in the laboratory to assess the effects of the rising average temperature and the increasing of fluctuating temperatures frequency and magnitude of extreme temperature on predation and Non-lethal effects of enemy. The development, reproduction and the proportion of alate aphids of C. juglandicolawa were measured. The effect of disturbance of H. axyridis on C. juglandicolawa was also assessd in the field. The research provide basic information for developing biological control technology and revealing the response of interspecific relationship of insects to global warming.