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在分析北京地区近十几年的冷害与近３６年气候特征的基础上，探讨北京地区夏播玉米生育期间的热量条件及冷害发生的时空分布规律，为减轻冷害提供农业气候背景分析，并提出了北京地区优化种植制度和夏播玉米品种合理布局及其它有效的防御对策。
Based on the analysis of the chilling injury in the past ten years in Beijing and the climatic characteristics of the past 36 years, this paper explored the heat conditions and the spatial and temporal distribution of summer chilling injury during summer growing in Beijing, and provided agro-climatic background analysis for mitigation of chilling hazard. Optimized planting system in Beijing and summer sowing corn varieties reasonable layout and other effective countermeasures.