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1956—2010年辽阳市霜冻特征分析
引用本文:安娟,董飞,陈玉光,白春娟,富晓燕.1956—2010年辽阳市霜冻特征分析[J].中国农学通报,2013,29(29):170-174.
作者姓名:安娟  董飞  陈玉光  白春娟  富晓燕
作者单位:1. 辽宁省辽阳市气象局2. 营口经济技术开发区气象局3. 辽阳市气象局
摘    要:为了给辽阳市农业生产和防灾减灾提供科学依据,利用辽阳市1956—2010年逐日最低气温资料,采用线性倾向估计法研究霜冻发生特征,并分析霜冻对辽阳农作物的影响。结果表明:(1)辽阳市平均初霜冻日为10月13日,平均终霜冻日为4月16日,平均无霜冻期为179天。(2)初霜冻日随年代表现为阶梯式推后,终霜冻日整体表现为提前,只在20世纪80年代出现推后。(3)辽阳市初、终霜冻日和无霜冻期的线性倾向率分别为1.7 d/10 a、-1.2 d/10 a、3.0 d/10 a,初、终霜冻日及无霜冻期的变化趋势在0.05及其以上水平显著。(4)辽阳市正常年份的霜冻对农作物基本无影响,但在个别年份,水稻成熟前或玉米苗期仍有可能遭遇初霜冻或终霜冻,应注意防范。

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收稿时间:2012/11/15 0:00:00
修稿时间:2013/2/27 0:00:00

Feature Analysis of Frost in Liaoyang City from 1956 to 2010
An Juan,Dong Fei,Chen Yuguang,Bai Chunjuan,Fu Xiaoyan.Feature Analysis of Frost in Liaoyang City from 1956 to 2010[J].Chinese Agricultural Science Bulletin,2013,29(29):170-174.
Authors:An Juan  Dong Fei  Chen Yuguang  Bai Chunjuan  Fu Xiaoyan
Institution:1.Meteorological Bureau of Liaoyang City, Liaoyang Liaoning 111000; 2Meteorological Bureau of Yingkou Economic and Technical Development Zone, Yingkou Liaoning 115007)
Abstract:In order to provide some scientific basis for the agricultural production and disaster prevention and mitigation in Liaoyang City, based on the daily minimum temperature date at Liaoyang Meteorological Station from 1956 to 2010, the impact of frost on the cropper at Liaoyang was analyzed and the characters of frost were studied by using the linear trend method. The results showed that: (1) the average dates of first and the last frost events were October 13th and April 16th, and the average frost-free period was 179 d. (2) It was found that the dates of first frost event delay with decade, while the last frost event advance overall, and the last ones delay only in 1980s. (3) The linear trend rates of first and last frost events and the frost-free period were 1.7 d/10 a, -1.2 d/10 a and 3.0 d/10 a, and the change trends of them were all significant above 0.05. (4) There was scarcely effect of frost in the normal years on the cropper, but in some years, the first or last frost events might occur in the period before the rice mature or the period of maize seedling-coming, and people should prevent it.
Keywords:Liaoyang City
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