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中国农学通报

中国农学通报 ›› 2016, Vol. 32 ›› Issue (35): 134-138.doi: 10.11924/j.issn.1000-6850.casb16030192

所属专题： 水稻； 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

衢州市7月异常低温对水稻产量的影响及其大气环流特征分析

王健疆,余丽萍   

  1. 浙江省衢州市气象局,浙江省衢州市气象局
  • 收稿日期:2016-03-27 修回日期:2016-04-25 接受日期:2016-04-25 出版日期:2016-12-26 发布日期:2016-12-26
  • 通讯作者: 王健疆
  • 基金资助:
    国家自然基金青年项目“东亚中高纬环流对冬季我国东部雾霾天气影响及机理研究”(41405047)。

Abnormal Low Temperature in July in Quzhou: the Effect to Rice Yield and Atmospheric Circulation Characteristics

  • Received:2016-03-27 Revised:2016-04-25 Accepted:2016-04-25 Online:2016-12-26 Published:2016-12-26

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摘要： 研究旨在应用衢州市1972—2015年气象观测资料、衢州市历年水稻产量、NCEP/NCAR再分析资料和东京气候中心海温资料，采用统计分析方法确定7月异常低温年出现的规律、对水稻产生的影响与前期海温的相关性，采用用天气学方法分析大气环流特征。结果表明，7月异常低温对水稻减产具有明显作用；7月异常低温年仅出现在多雨年内，与前期4—7月太平洋相关海域海温存在明显负相关，根据前期海温特征可提前1~3个月对7月异常低温进行预测，环流具有亚洲区极涡偏强，南亚高压偏弱，西太平洋副热带高压脊线偏南、西伸脊点偏东，东亚夏季风偏弱，在高度距平场上表现为新地岛至长江中下游地区“- -”分布等特征。

关键词: 稻草, 稻草, 木聚糖酶, 青贮, 发酵品质

Abstract: The paper aims to find out the regularity of abnormal low temperature in July which may effect on the rice yield in Quzhou and the correlation between abnormal temperature and the sea surface temperature(SST) by statistical method based on station-observed data, NCEP/NCAR reanalysis data and SST data during 1972-2015. The atmospheric circulation characteristics were analyzed by synoptic analysis method. The result shows that the abnormal low temperature only appeared in less rainfall years which always lead the rice yield loss and has a negative correlation with the SST in the Western Pacific Sea during April to July, which can be used to forecast the July abnormal low temperature about 1 to 3 months earlier. The atmospheric circulation character presents strong Asia polar vortex, weak South Asia High, southward Western Pacific subtropical High and weak East Asian summer monsoon, and the distribution of abnormal height field from Novaya Zemlya to the Yangtze River valley is like "- -" pattern.

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