江西近50年寒露风演变趋势及其对双季晚稻的影响  

EVOLUTION TREND OF COLD-DEW WIND IN RECENT 50 YEARS IN JIANGXI PROVINCE AND ITS INFLUENCE ON LATE DOUBLE-HARVEST RICE

作　　者：刘文英[1] 张显真[2] 简海燕 

机构地区：[1]江西省气象台,江西南昌330046 [2]江西省气象局,江西南昌330046 [3]宜春市气象局,江西宜春336000

出　　处：《气象与减灾研究》2009年第4期67-71,共5页Meteorology and Disaster Reduction Research

基　　金：中国气象局新技术推广项目(编号:CMATG2009MS29).

摘　　要：利用江西省81个代表站1959—2008年的气象资料和14个农业气象站1983—2007年的双季晚稻观测资料,对江西省寒露风的发生情况和演变趋势,以及寒露风出现日数与空壳率的关系进行了分析。结果表明,江西省寒露风约十年九遇,且赣中的发生频率要高于赣北和赣南;寒露风有提前出现的趋势。寒露风日数每增加1d,可造成空壳率增加0.4%—3.0%。Based on the 1959--2008 meteorological data of 81 data of 14 agricultural-meteorology stations in Jiangxi province, stations and the 1983--2008 late double-harvest rice observation the climatic situation and evolution trend of cold-dew wind as well as the relationship between the occurrence day of cold-dew wind and the rate of unfilled grain are analyzed. The results indicate that cold-dew wind occurs nine of ten years and more frequently in middle part of Jiangxi than in northern and southern parts of Jiangxi, and it tends to occur more early than before. One day increase of cold-dew wind occurrence will increase te rate of unfilled grain about 0.4%--3.0%.

关 键 词：寒露风 趋势 双季晚稻 空壳率 

分 类 号：S162.54[农业科学—农业气象学] S511.33[农业科学—农业基础科学]