且末绿洲1961—2010年霜冻的变化特征及其对主要农作物的影响  

Characteristics of Frost Change and Its Influence on Main Crops in Qiemo Oasis During 1961-2010

作　　者：黄玖君 师国强 邓小霞[2] 

机构地区：[1]且末县气象局,新疆且末841900 [2]石河子大学农学院,新疆石河子832003

出　　处：《沙漠与绿洲气象》2013年第2期47-50,共4页Desert and Oasis Meteorology

基　　金：国家自然基金项目(41005059);中央级公益性科研院所基本科研业务费项目(IDM201201)共同资助

摘　　要：利用且末绿洲近50 a初、终霜日等气候资料,分析该地区的霜冻变化特征,初步探讨其对主要农作物的影响。结果表明:且末绿洲近50 a来终霜危害大于初霜,初霜冻推迟、终霜冻提前趋势明显,无霜期呈微弱延长趋势但不显著;初、终霜均具有5 a、33 a的振荡周期,未来一段时期均处在偏晚期;进入21世纪以后未出现特早初霜和特晚终霜。总体上看,气候变暖使该地区霜冻灾害减少,对主要农作物的生长有利。Based on the first and last frost dates of meteorological data in recent 50 years of Qiemo Oasis, the change of frost was analyzed and the influence on the main crops in the region were discussed. The results indicated that the last frost dates did more harm than first frost dates in past 50 years with the trend of delay of first frost dates and advancing of the last frost dates was obvious, while the frostless period was shorten little. The first and last frost dates existed the oscillation period of 5 a and 33 a and the trend of delay in future. Both specially early first frost dates and specially late last frost dates had not appearred since the 21st century. On the whole, the climate warming mitigates the frost disaster, which is favorable for the growth of main crops.

关 键 词：霜冻 变化趋势 异常特征 且末绿洲 

分 类 号：S162.5[农业科学—农业气象学]