利用朝阳1953 ～2010年气象资料,采用倾向率、标准偏差统计方法,分析霜期光热水资源变化特征研究蔬菜大棚生产期农业气候资源变化.结果表明,近58年来,因气候变暖辽西地区霜期缩短趋势明显,气象要素有不同的表现.与20世纪50 ～60年代相比,近20年霜期气温升高2.0℃,日照时间减少159 h,降水量增加6.6 mm,阴天日数变化平稳.光能资源丰富、气候变暖明显是辽西地区霜期农业气候特点,霜期自然灾害发生率低对霜期设施农业发展十分有利.%According to Chaoyang 1953 -2010 meleorological data, the trend rate and the standard deviation of statistical methods were used to analyze the frosty light and heat water variation. The results showed that the frosty period was greatly shorted in the past 58 years due to climate warming in Chaoyang, and the meteorological elements showed different changes. Compared to the 1950s and 1960s, the frosty temperatures increased 2. 0 ℃ nearly 20 years, sunshine time reduced 159 h, precipitation increased 6. 6 mm, and cloudy day number changed smoothly. Rich solar energy resources, global warming were clearly the climatic characteristics of frosty period in Chaoyang region, the reduction of natural disasters in this period is very favorable to the agricultural production.
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