沈阳市霜期农业气候资源特征分析

Analysis of the Characteristics of the Frosty Agro-climatic Resources of Shenyang City

研究霜期农业气候资源变化,为沈阳市霜期农业顺利发展,趋利避害提供科学依据。利用沈阳1951—2010年气象资料,采用常规数理统计方法,分析霜期光热水资源变化特征。结果表明:近60年来,因气候变暖沈阳市霜期缩短趋势明显,气象要素变化稳定性较差。与1951—2010年相比,近30年的霜期气温升高0.9℃,高温年增加5.7%;日照时间减少66h,寡照年增加16.7%;降水量增加8.3mm,多雨雪年增加5%;阴天日数增加6天,几率提高8.3%;大风日数减少,大、暴雪次数变化平缓。连续阴天寡照、气温升高变化不稳是沈阳市冬季气候特点,对冬季设施农业发展影响较大。只有完善设施农业设备现代化、智能化功能,才能更好地发挥光热资源效率。

The study of the frosty agricultural climate resources change, frosty agriculture climate resources change, frosty agriculture in Shenyang City, the smooth development, while avoiding disadvantages to provide a scientific based on Shenyang 1951 to 2010 meteorological data conventional mathematical statistical methods, analysis of the frosty light and heat water variation. The results showed that： the past 60 years due to climate warming in Shenyang City frosty period was shortened obviously, the meteorological elements at less stable. Compared with 1951 to 2010, nearly 30 years, frosty temperatures increased 0.9℃, high temperature increased by 5.7%; sunshing time was reduced to 66 h, the increase of 16.7%, increased in precipitation 8.3 mm, much rain and snow, an increase of 5%; cloudy days increased 6 days, the probability increased by 8.3%; windy days in reducing, big blizzard number of changes smoothly. Continuous cloudy scant sunlight, temperatures rose to changes in unstable was climatic characteristics of the winter of Shenyang City, a greater impact on the winter agricultural development, only to improve the facilities for modernization of agricultural equipment, intelligent features, in order to play a better thermal efficiency of resources.