北京地区夏播玉米低温冷害及其对策初探

Preleliminary Studies on Chilling Injury of Summer sowing Maize in Beijing and the Countermeasures

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。

On the basis of analysing more than ten years of chilling injury and thirty six years of climatic features, the thermal conditions in summer sowing maize growing period and the temporal and spatial distribution patterns of the chilling injury of summer maize is studied and the climatic background for reducing chilling injury is analyzed. The optimum cropping system and rational distribution of summer sowing maize varieties and effective countermeasures are proposed.