Abstract: The data of the daily temperature,daily minimum temperature and daily precipitation of 20 meteorological stations in Ningxia between 1961 and 2005 was used to analyze the changes of the average annual temperature,the accumulative temperature above 0℃,the frost-free period and the precipitation during growing periods of crops.The results showed that the average annual temperature had remarkably increased since 1990's.It increased by 0.5℃ and 0.9℃ in 1990's and in 2001-2005 respectively.The accumulative temperature above 0℃ increased by 94.9℃ and 225.2℃ in 1990's and in 2001-2005 respectively.The frost-free period extended 6.8 days,while the precipitation during growing periods of crops decreased 12.5mm.The increased temperature was beneficial to winter wheat northward and upward higher altitude region beyond their original planting boundary.

Key words: Ningxia, Ningxia, Climate Change, Agricultural production