湖北农业科学 ›› 2018, Vol. 57 ›› Issue (3): 27-31.doi: 10.14088/j.cnki.issn0439-8114.2018.03.007

• 资源·环境 • 上一篇    下一篇

江苏省单季稻生育期内降水分配格局的时空变化

徐阳1, 孙莉娟2, 黄进3, 伍琼1, 朱雅丽1   

  1. 1.安徽省农村综合经济信息中心/安徽省农业生态大数据工程实验室,合肥 230031;
    2.安徽省人工影响天气办公室,合肥 230031;
    3.南京信息工程大学应用气象学院,南京 210044
  • 收稿日期:2017-09-14 出版日期:2018-02-10 发布日期:2019-12-25
  • 作者简介:徐阳(1983-),男,辽宁葫芦岛人,工程师,主要从事农业信息化、农业气象、互联网应用等方面的研究,(电话)13003009556(电子信箱)xuyangclimate@163.com。
  • 基金资助:
    公益性行业科研专项(GYHY201506018); 江苏省高校自然科学研究面上项目(16KJB170008); 安徽省科技攻关项目(1501031078)

Spatio-Temporal Variation of Precipitation Distribution Pattern during the Growing Periods of Single-Crop Rice in Jiangsu Province

XU Yang1, SUN Li-juan2, HUANG Jin3, WU Qiong1, ZHU Ya-li1   

  1. 1.Rural Comprehensive Economic Information Center of Anhui Province/Anhui Engineering Laboratory of Agro-Ecological Big Data,Hefei 230031,China;
    2.Anhui Weather Modification Office,Hefei 230031,China;
    3.School of Applied Meteorology,Nanjing University of Information Science and Technology,Nanjing 210044,China
  • Received:2017-09-14 Online:2018-02-10 Published:2019-12-25

摘要: 利用江苏省52个气象站1961-2012年逐日降水资料及单季稻产量逐年数据,计算了生育期5-10月的降水分配指数,探讨了降水分配格局的时空变化及与产量的潜在联系。结果表明,江苏省单季稻生育期内降水分配呈现出较强的不均匀性,雨量主要集中于50 mm以上日降水事件和夏季的7月,其中北部地区的降水集中性要明显高于南部地区;近50年来单季稻生育期内降水分配格局的不均匀性呈现加剧态势,突出体现在南部地区50 mm以上降水和8月降水对雨量贡献率的显著增加;单季稻产量与降水分配格局存在着一定的相关性,降水集中性越高对产量越不利,降水分配指数中,以50 mm以上降水的雨量贡献率对产量的负效应最为显著,且南部地区的单季稻产量对这一指标的波动更为敏感。

关键词: 单季稻, 降水分配指数, 江苏省

Abstract: Based on the data of daily precipitation and single-crop rice yield at 52 meteorological stations in Jiangsu province during 1961 to 2012,the precipitation distribution indices during growing periods from May to October were calculated,and the possible relationship between spatio-temporal variability of precipitation distribution pattern and rice yield was explored. The results showed that,the precipitation distribution during growing periods of single-crop rice in Jiangsu had strong ununiformity,precipitation was mainly concentrated in the daily rainfall events with amount above 50 mm and July of summer,and the precipitation concentration in north Jiangsu was higher than that of south Jiangsu. The precipitation distribution during growing periods of single-crop rice in Jiangsu was intensifying in recent 50 years,and contribution of the rainfall events with amount above 50 mm and the precipitation of August in south Jiangsu had significant increasing trends. There was a certain correlation between precipitation distribution pattern and single-crop rice yield,the higher precipitation concentration would bring the less yield. Among the precipitation distribution indices,the negative impacts of the contribution of rainfall events with amount above 50 mm to yield were more obvious,and single-crop rice yield in south Jiangsu was more sensitive to the variability of the precipitation indicator.

Key words: single-crop rice, precipitation distribution indices, Jiangsu province

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