利用辽宁省葫芦岛地区1959~2005年的温度、降水资料,计算出当地不同农时阶段的4种旱涝指标,并根据历史实际旱涝的记载,对4种指标进行了对比分析,结果表明:应用Ik指标能反映当地旱涝状况;葫芦岛地区春播期干旱频率最高,达77%。针对各农时阶段的干旱发生规律,提出了抗旱增产的若干建议。 Based on the data of temperature and precipitation from 1959 to 2005 in Huludao of Liaoning Province, four indicators of drought and waterlogging in different agricultural periods were calculated. Based on the historical record of drought and flood, the four indicators were compared and analyzed. The results showed that: The application of Ik index can reflect the local drought and flood conditions; the highest frequency of spring drought in Huludao reaches 77%. Aiming at the occurrence of drought in each farming stage, some suggestions on drought relief and yield increase are put forward.