| 冀南冬小麦冬前农业气候资源变化特征 |
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| 引用本文： | 孙东磊,梁钰,姬宋鹏,贾秋兰,马峙英.冀南冬小麦冬前农业气候资源变化特征[J].中国农学通报,2010,26(21):351-355. |
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| 作者姓名： | 孙东磊 梁钰 姬宋鹏 贾秋兰 马峙英 |
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| 作者单位： | 1. 河北省邢台市气象局,河北邢台,054000
2. 河北省邢台市气象局,河北邢台,054000;河北农业大学,河北保定,070001 |
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| 基金项目： | 国家"十一五"科技支撑重大项目课题"黄淮海中北部平原小麦玉米两熟丰产高效技术集成与示范研究 |
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| 摘 要： | 利用1962-2009年河北省南部4个气象站气象资料，采用线性气候倾向率、小波分析及Mann-Kendall检测方法对冬小麦越冬前主要农业气候资源变化特征进行分析。结果表明：近50年来，冀南麦区冬小麦越冬期推迟，冬前热量资源更加丰富；冬小麦冬前≥0℃积温和越冬开始日期变化在1987年前后存在突变点；冬小麦冬前日照时数及均一化干湿指数变化不明显，没有突变现象发生；冬小麦越冬开始日期存在6-7年和12-16年两类尺度周期变化规律；1962-1988年冬前≥0℃积温存在6-8年周期变化规律，1989-2009年存在8-10年周期变化规律；冬前日照时数具有明显多时间尺度周期变化特征，但近20年来逐渐呈现10-12年周期变化规律；均一化干湿指数变化存在4-6年和14-16年2类尺度周期变化。综合分析表明，河北省南部麦区冬前≥0℃积温及越冬始期变化明显，可适当调整小麦播期以适应气候变化；近10年来，麦区干湿特征呈现变湿趋势，冬小麦发生冻害概率减小，但年际间干湿变化较大，冬前灌溉仍为减轻小麦越冬冻害风险的有效措施。
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| 关 键 词： | 祁连山区 祁连山区 冻土深度 春小麦发育期 |
| 收稿时间： | 2010/6/21 0:00:00 |
| 修稿时间： | 2010/8/30 0:00:00 |
Characteristics of Agricultural Climate Resources of Winter Wheat Growth Period before Over Wintering in Southern Hebei |
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| Sun Donglei,Liang Yu,Ji Songpeng,Jia Qiulan,Ma Zhiying.Characteristics of Agricultural Climate Resources of Winter Wheat Growth Period before Over Wintering in Southern Hebei[J].Chinese Agricultural Science Bulletin,2010,26(21):351-355. |
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| Authors: | Sun Donglei Liang Yu Ji Songpeng Jia Qiulan Ma Zhiying |
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| Institution: | 1 Xingtai Meteorological Bureau,Hebei Province,Xingtai Hebei 054000;2 Agricultural University of Hebei,Baoding Hebei 071001) |
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| Abstract: | On the basis of the meteorologic data observed by 4 meteorological stations in southern Hebei from 1962 to 2009,the variation features of agricultural climate resources during the growth period before overwintering was studied by applying the methods of climatic trend rate,wavelet analysis and M-K methods.The results showed that the first day of winter wheat overwintering period was postponed and climate heat resources was more abundant in recent fifty years.The first day of winter wheat overwintering period and climate heat resources were also existed abrupt change over 1987.Sunshine hours and aridity-wetness homogenized index during the growth period before winter did not change significantly and there were no abrupt changes.The first day of winter wheat overwintering period had mainly the interannual oscillation periods of 6-7 years and 12-16 years.The accumulate temperature of ≥0℃ before overwintering had mainly the interannual oscillation periods of 6-8 years from 1962 to 1988 and that of 8-10 years from 1989-2009.Multi-scale variations existed in sunshine hours and 10-12 years variation period was identified over the past twenty years.Aridity-wetness homogenized index during the growth period before winter had mainly the interannual oscillation periods of 4-6 years and 14-16 years.The results indicated that climate heat resources and the first day of winter wheat overwintering period changed obviously.Appropriate readjustment should be made by full consideration of climate change in recent ten years.Aridity-wetness homogenized index showedthe wetting trend and the probability of freezing damage was little.With the interannual changes of dry and wet,irrigation before wintering was the important measures that reduced risks of the wheat frozen injury. |
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| Keywords: | winter wheat agricultural climate resources wavelet analysis Mann-Kendall testing |
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