【摘要】 本文从辨析霜冻、霜、冻害、寒害的概念入手 ,抓住对霜冻危害程度起决定作用的低温和低温持续时间等关键因子安排田间试验 ,结合目前国内普遍采用的前苏联霜冻指标 ,初步确定了我区小麦、玉米等主要作物的霜冻指标 ,为利用 NOAA卫星遥感监测霜冻奠定了基础。最后参考有关资料并结合田间试验结果 ,提出可操作性强的防霜措施更多还原

【Abstract】 Based on the discussion on concepts of frost injury, frost, freeze injury and cold injury, and the key factors of low temperature and its duration which take a direct effect on the frost injuries, the field experiment were designed. According to the frost injury index made by pre-Soviet Union and our experiment results,the frost injury index of maize and wheat in Ningxia province were determined,which established a foundation for NOAA satellite to monitor frost injuries by remote sensing. At last, the practicable measures for preventing crops from frost injuries were put forward.更多还原