Abstract:

The variation characteristics of frost days at five stations of Kashi in Xinjiang were investigated by means of climatological statistics method based on daily minimum temperature data during 1961 － 2010 from five stations． The results show that the first frost date postponed and latest frost date was ahead，and the frost free period was extended in Kashi area，which created favorable conditions for agricultural production． But in individual years，the frost days fluctuated much and could lead to the extreme climate disaster，so we must enhance the prevention of severe weather．

Key words: Kashi, frost, variation characters, agriculture, influence

摘要：

根据１９６１ ～２０１０ 年新疆喀什５ 个国家基本气象站的日最低气温资料，采用气候统计学方法对喀什地区５ 个站点霜冻日的变化特征进行分析。结果表明喀什地区初霜冻日推后、终霜冻日提前，无霜冻期延长，霜冻日数减少，为农业生产创造了有利条件，但个别年份霜冻日波动较大的极端气候灾害事件又成为农业生产须加强防范的灾害性天气之一。
　　

关键词: 喀什, 霜冻, 变化特征, 农业, 影响