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作者	单位
喇永昌，李丽平，张磊	（1.南京信息工程大学，江苏南京 210044； 2.石嘴山市惠农区气象局，宁夏惠农 753200； 3.宁夏气象科学研究所，宁夏银川 750021）

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中文摘要:

为给宁夏灌区春小麦干热风防治提供参考，根据春小麦干热风国家气象行业标准，利用1981-2014年宁夏灌区16个气象站的气象资料，分析了当地春小麦高温低湿型干热风日数和天气过程次数的时空分布特征。结果表明，近34年中干热风日数与天气过程次数均呈上升趋势，且在1995年出现了突变；近24年中6月中旬干热风日数增多，7月下旬减少，干热风日出现的时间提前；2001-2010年干热风日数和天气过程次数最多。在宁夏灌区北部、东部和南部春小麦干热风出现较多，其中大武口最多；春小麦干热风日在宁夏灌区发生的区域呈扩大趋势，但干热风天气过程发生区域2008年前呈扩大趋势，2008年后呈缩小趋势。为了减轻干热风灾害对春小麦的危害，在实际生产中，应采取长期治理生态环境和短期预防相结合的防治措施。

英文摘要:

To provide reference for prevention and control of spring wheat dry-hot wind in the irrigation area of Ningxia,according to the meteorological occupation standard of dry-hot wind disaster for spring wheat, daily meteorological element data from 1981 to 2014 in late growth stage of spring wheat at 16 stations in the irrigated areas of Ningxia, which are being taken used for analyzing the spatial and temporal characteristics of high temperature and low humid days and dry-hot wind weather process.The results showed that: in the recent 34 years，dry-hot wind days and dry-hot wind weather process times are on the rise as a whole.In 1995, there was sharp rise, but it showed a trend of falling obviously after 2008.In the recent 24 years, dry-hot wind days increased in the middle of June, but decreased in late July, which means that the appearance of dry-hot wind days is ahead of time.Between 2001 and 2010, there were the most dry-hot wind days and process times.Dry-hot wind of spring wheat occurred frequently in the northern, eastern and southern of Ningxia irrigation areas and Dawukou is the most serious area.The region of dry-hot wind days and area showed a trend of expansion overall, but showed a trend of shrinking after 2008.In order to prevent or reduce the damages of dry-hot wind disasters to spring wheat, in actual production, the combined measures of the long-term management of ecological environment and short-term prevention must be taken.

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