为了探讨宁夏引黄灌区气候资源变化特征及不同复种模式的气候资源利用率及农业气象灾害频率，进而精准研究气候变化背景下不同复种模式在引黄灌区推广的气候可行性，为引黄灌区优化作物布局结构、提高气候资源利用率提供理论支撑。2019—2020年，在宁夏吴忠市对冬小麦—水稻、冬小麦—青贮玉米、冬牧草—水稻、春小麦—饲草大麦、饲草大麦—向日葵和冬牧草-青贮玉米6种复种模式开展大田交叉试验，以气象数据、田间试验数据、社会经济数据为基础，分析各种复种模式的气候资源利用率及农业气象灾害发生频率，探究宁夏引黄灌区不同复种模式大面积推广的气候可行性。结果表明：1971—2020年，宁夏引黄灌区热量资源显著增加，日照资源和降水资源变化不明显，复种模式的光能利用率和光温资源利用率分别比现有单种模式的高0.16%、18.66%。结合气候资源保证率和农业气象灾害（冬小麦/冬牧草越冬冻害、小麦干热风、水稻低温冷害，青贮玉米高温热害/倒伏）发生频率，得到6种复种模式在不同区域的可推广性：冬牧草—水稻适合在贺兰、银川、利通区和大武口区推广，在惠农、陶乐、永宁、中宁、平罗和青铜峡可小范围试种；冬小麦—水稻可在利通区推广，在青铜峡、中宁、永宁和银川小范围试种；冬小麦—青贮玉米适合在利通区、青铜峡和中宁可推广，永宁和银川可将这种模式作为“两年三熟制”的选择；春小麦—饲草大麦、饲草大麦—向日葵和冬牧草—青贮玉米在宁夏引黄灌区各地均可推广。气候变暖为宁夏引黄灌区开展复种提供了有利条件，现有的单种模式的光能利用率和光温资源利用率平均值均低于复种模式，各地发生农业气象灾害频率不同，应因地制宜地推广复种模式，提高气候资源利用率和单位面积产出。

To explore the change characteristics of climate resources, the utilization rate of climate resources and the frequency of agrometeorological disasters of different multiple cropping models in the Yellow River irrigation area of Ningxia, and then precisely study the climatic feasibility of the promotion of different multiple cropping models in the Yellow River irrigation area under the background of climate change, so as to provide theoretical support for optimizing the crop layout structure and improving the utilization rate of climate resources in the Yellow River irrigation area, six field crossover experiments of multiple cropping of winter wheat—rice, winter wheat—silage corn, winter herbage—rice, spring wheat—forage barley, forage barley—sunflower and winter herbage—silage corn, were carried out from 2019 to 2020 in Wuzhong City, Ningxia. Based on meteorological data, field experiment data and socio-economic data, the utilization rate of climate resources and the frequency of agrometeorological disasters of various multiple cropping modes were analyzed to explore the climatic feasibility of large-scale extension of different multiple cropping models in the irrigated area of Yellow River in Ningxia. The results showed that the heat resources increased significantly, while the sunshine resources and precipitation resources did not change significantly during 1971 to 2020. The light energy utilization rate and light temperature resources utilization rate of the complex mode were 0.16% and 18.66% higher than the existing single mode, respectively. Combined with the guarantee rate of climate resources and the occurrence frequency of agrometeorological disasters (winter wheat/winter herbage overwintering freezing damage, dry hot air of wheat, low temperature freezing damage of rice, high temperature heat damage/lodging of silage corn), we got the scalability of six multiple cropping models in different regions: winter herbage—rice was suitable for promotion in Helan, Yinchuan, Litong District and Dawukou District, and could be tested in a small range in Huinong, Taole, Yongning, Zhongning, Pingluo and Qingtongxia; winter wheat—rice could be popularized in Litong District and planted in small areas in Qingtongxia, Zhongning, Yongning and Yinchuan; winter wheat—silage corn was suitable for promotion in Litong District, Qingtongxia and Zhongning, and Yongning and Yinchuan could use the model for the choice of “three-ripening system in two years”; spring wheat—forage barley, forage barley—sunflower and winter herbage—silage corn could be popularized in all irrigation area of Yellow River in Ningxia. Climate warming provides favorable conditions for multiple cropping in the irrigated area of Yellow River in Ningxia. The average utilization rate of light energy and light temperature resources of the existing single model is lower than that of the multi-cropping model. The frequency of agrometeorological disasters is different in different regions. Therefore, the multi-cropping model should be promoted according to local conditions to improve the utilization rate of climate resources and the output per unit area.