湖北农业科学 ›› 2021, Vol. 60 ›› Issue (7): 40-46.doi: 10.14088/j.cnki.issn0439-8114.2021.07.007

• 资源·环境 • 上一篇    下一篇

贵港市近60年早稻种植高温热害发生规律

莫申萍1, 蒙小寒1, 许艺馨2, 梁虹1, 谭孟详3   

  1. 1.贵港市气象局,广西 贵港 537100;
    2.广西物流职业技术学院,广西 贵港 537100;
    3.广西壮族自治区气象科学研究所,南宁 530022
  • 收稿日期:2020-06-29 出版日期:2021-04-10 发布日期:2021-04-25
  • 作者简介:莫申萍(1980-),女,广西宜州人,工程师,主要从事农业气象应用研究,(电话)13768826767(电子信箱)mspping@163.com。
  • 基金资助:
    2017年广西科技重点研发计划项目(桂科AB17195037); 贵港市气象局气象科研计划项目(贵气科2020001)

Occurrence regularity of heat damage of high temperature of early rice planting in Guigang city in recent 60 years

MO Shen-ping1, MENG Xiao-han1, XU Yi-xin2, LIANG Hong1, TAN Meng-xiang3   

  1. 1. Guigang Meteorologic Bureau, Guigang 537100, Guangxi, China;
    2. Guangxi Logistics Vocational and Technical College, Guigang 537100, Guangxi, China;
    3. Guangxi Meteorological Disaster Mitigation Institute, Nanning 530022, China
  • Received:2020-06-29 Online:2021-04-10 Published:2021-04-25

摘要: 高温是现在引起重视的极端天气之一,对广西贵港市早稻生长过程中受到的高温影响进行特征分析,找出其天气过程发生的基本规律,对合理安排早稻生产和防御高温热害具有重要意义。通过对贵港市3个国家级地面气象站点(贵港、桂平、平南)1960—2019年的气象观测数据和农业部门的相关统计数据进行分析,找出贵港市早稻种植期内高温热害发生的年际规律。结果表明,贵港市早稻受高温热害影响的程度总体呈自西向东逐渐加强的空间分布趋势。高温热害年际变化呈V形趋势,且V形趋势的高点在逐步抬高,趋于严重的态势,年际发生占66.7%,年平均发生1.1次,年平均发生5 d。研究区内极端高温天气出现了21 d和42 d的周期振荡,经历2个明显的阶段变化,其中2018年的高温过程在整个早稻种植期中出现的频率大且持续时间长。

关键词: 早稻种植, 高温热害, 趋势分析, Mann-Kendall检验, 小波分析, 贵港市

Abstract: High temperature is one of the extreme weathers that have attracted attention now. Characteristic analysis of the impact of high temperature during the growth of early rice in Guigang city, Guangxi was carried out. Finding out the basic law of its weather process is of great significance for the reasonable arrangement of early rice production and protection against high temperature heat damage. The meteorological observation data from 1960 to 2019 and relevant statistical data of the agricultural department at three national ground-level meteorological stations (Guigang, Guiping, Pingnan) in Guigang city was analyzed. To find out interannual law of the occurrence of high temperature heat damage during the early rice planting period in Guigang. The results showed that the general trend of the degree of heat damage caused by high temperature in early rice in Guigang city was a spatial difference that gradually strengthens from west to east. The interannual change of high temperature heat damage presents a “V” shape trend, and the high point of the “V” trend was gradually rising to a serious situation. The interannual occurrence rate was 66.7%, with an average occurrence of 1.1 times/a and a total number of days of 5 days/a. The extreme high-temperature weather in the study area experienced periodic oscillations was 21 d and 42 d, which experienced two obvious phase changes. Among them, the high temperature process in 2018 occurred frequently and throughout the entire early rice planting period.

Key words: early rice planting, heat damage of high temperature, trend analysis, Mann-Kendall test, wavelet analysis, Guigang city

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