杭嘉湖平原水稻高温热害时空变化特征

Temporal and Spatial Variation Characteristics of High Temperature Heat Damage of Rice in Hangjiahu Plain

在全球气候变暖背景下,极端高温天气频发,高温热害对水稻的影响愈加突出。杭嘉湖平原是我国水稻的重要产区之一,研究该地区水稻高温热害时空变化特征对提高当地粮食产量具有重要意义。本文根据杭嘉湖平原多个气象站的历史观测资料,分析了该地区水稻高温热害的空间分布、时间变化趋势。结果表明:杭嘉湖平原的杭州、湖州发生水稻高温热害频次和强度均大于嘉兴;总体上高温热害频次和强度表现出增长趋势,其中2000—2009年高温热害频次最多、强度最大。

Under the background of global warming,extreme high temperature weather occurs frequently,and the impact of high temperature heat damage on rice is becoming more and more prominent.Hangjiahu Plain is one of the important rice producing areas in China.It is of great significance to study the temporal and spatial variation characteristics of high temperature heat damage of rice in this area to improve local grain yield.Based on the historical observation data of multiple meteorological stations in Hangjiahu Plain,this paper analyzed the spatial distribution and temporal variation trend of high temperature heat damage of rice in this area.The results showed that the frequency and intensity of rice heat damage in Hangzhou and Huzhou were higher than those in Jiaxing.In general,the frequency and intensity of high temperature heat damage showed an increasing trend,and the frequency and intensity of high temperature heat damage were the greatest in 2000-2009.