| 辽东山区雨日分布特征及其对玉米产量的影响 |
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| 引用本文： | 毕伯钧,于系民.辽东山区雨日分布特征及其对玉米产量的影响[J].气象学报,1985,43(2):180-187. |
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| 作者姓名： | 毕伯钧 于系民 |
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| 作者单位： | 辽宁省本溪气象台
(毕伯钧)，辽宁省气象科学研究所(于系民) |
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| 摘 要： | 本文利用辽东山区宽甸、桓仁、新宾和清原四个站1956—1975年雨日资料和玉米产量资料,研究了该地区雨日分布特征及其对玉米产量的影响。根据雨日统计结果,提出配合山区雨日数学模型方法,得出ax/c_1,ax~2/c_2,…ax~i/c_i,ax~n/c_n形式的数学模型。依据作物生育期(5—9月)雨日持续期配合玉米产量资料,采用Friedman非参数检验方法,揭示出5天以上雨日序列数对玉米产量有显著影响。
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| 收稿时间： | 1983/5/13 0:00:00 |
| 修稿时间： | 1984/1/24 0:00:00 |
SOME CHARACTERISTICS OF WET DAYS DISTRIBUTIONS AND THEIR EFFECTS ON THE YIELD OF MAIZE IN THE MOUNTAINOUS REGION OF EAST LIAONING PROVINCE |
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| Bi Bojun and Yu Ximin.SOME CHARACTERISTICS OF WET DAYS DISTRIBUTIONS AND THEIR EFFECTS ON THE YIELD OF MAIZE IN THE MOUNTAINOUS REGION OF EAST LIAONING PROVINCE[J].Acta Meteorologica Sinica,1985,43(2):180-187. |
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| Authors: | Bi Bojun and Yu Ximin |
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| Institution: | Benxi Meteorological Observatory, Liaoning Province;;Institute of Meteorology, Liaoning Province |
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| Abstract: | In this paper, some characteristics of the wet days distributions and their effects on the yield of maize during 1956-1975 were investigated, for counties Huanren, Xinbin, Qingyuan and Kuandian. A statistical model which fits sequences of wet days in this region was developed and the relation between the wet-day sequences in the growth period (May-Sep.) and the yield was analysed and the effects of sequences with length equal to or greater than 5 days on yields were found significant using Friedman test. |
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