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中国农学通报

中国农学通报 ›› 2018, Vol. 34 ›› Issue (27): 8-11.doi: 10.11924/j.issn.1000-6850.casb17070025

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

海南早稻灌浆成熟期高温热害对千粒重的影响

陈升孛,吴坤悌,陈明,赵蕾,张亚杰   

  1. 海南省气象服务中心,海南省气象服务中心,海南省气象服务中心,海南省气象服务中心,海南省气候中心
  • 收稿日期:2017-07-06 修回日期:2018-09-10 接受日期:2017-11-25 出版日期:2018-09-19 发布日期:2018-09-19
  • 通讯作者: 张亚杰
  • 基金资助:
    海南省气象局2014 年科技创新项目“海南省早稻关键期的高温影响及防御研究”(HNQXQN201404)。

High Temperature Damage at Grain Filling Stage of Early Rice in Hainan: Effects on 1000-grain Weight

吴坤悌,陈明,赵蕾 and 张亚杰   

  • Received:2017-07-06 Revised:2018-09-10 Accepted:2017-11-25 Online:2018-09-19 Published:2018-09-19

摘要： 在全球气候变暖背景下，利用海南省2005—2016 年气象资料、早稻产量资料、早稻农业气象观测资料，以32℃高温为早稻高温热害起始温度，计算灌浆成熟期内高温时数和热害积温，以探究高温热害导致海南早稻千粒重变化的规律及其影响程度。结果表明：海南早稻灌浆成熟期热害积温和热害时数均呈现逐年上升趋势；灌浆成熟期热害积温和热害时数对千粒重的影响规律均可由对数函数来拟合，相关系数分别为0.69和0.68，其中，千粒重随着热害积温和热害时数的增加而降低，且下降速率逐渐减慢。

关键词: 暖区暴雨, 暖区暴雨, 地面辐合线, 垂直风切变

Abstract: Under the background of global climate warming, based on the meteorological data, early rice production data and early rice agro-meteorological observation data from 2005 to 2016, the authors calculated high temperature (≥32℃) hours and thermal accumulated temperature at grain filling stage, in order to explore the regularity and effects of high temperature damage on 1000-grain weight of early rice in Hainan. The results indicated that: the high temperature hours and thermal accumulated temperature at grain filling stage of early rice both increased annually in Hainan, and could be fitted by logarithmic function, with the correlation coefficients of 0.69 and 0.68 respectively. 1000-grain weight decreased with the increase of high temperature hours and thermal accumulated temperature, and the rate of descent slowed down gradually.