河北省棉花生育期连阴雨气候变化特征分析  

Analysis of variation of continuous rainfall in growing stage of cotton across Hebei Province

作　　者：安月改 林艳 阮新 余永利 

机构地区：[1]河北省气象局,河北石家庄050021 [2]山西省天镇县气象局,山西天镇038200

出　　处：《河北省科学院学报》2007年第2期60-64,共5页Journal of The Hebei Academy of Sciences

基　　金：河北省科学技术研究与发展计划项目资助(05820601D)

摘　　要：利用河北省65个气象观测站自1954年（或建站）至2000年的气象资料，分析了河北省棉花四个生育期的连阴雨气候变化特征。结果表明：河北省棉区大部棉花播种出苗期、蕾期、花铃期和吐絮期连阴雨分别为1—2年一遇、1-3年一遇、1—2年一遇和2—6年一遇。不同时期重连阴雨所占比率分别为25％、65％、49％和45％。近50年来，除播种出苗期连阴雨历年出现次数具有增多趋势外，其它各个时期的连阴雨、重连阴雨以及播种出苗期重连阴雨均具有减少趋势，但各时期减少幅度有所不同。The variation of continuous rainfall （CR） in four growing stages of cotton is analized with observational data from 65 meteorological stations across Hebei Province from 1954 （or the start of record） to 2000. The results show that CR in Plant-Shoot stage, Flower stage, Boll stage, and Lint stage of cotton across Hebei could be categoried into 4 classes： once every 1 - 2 year, once every 1 -3 year, once every 1 -2 year,and once every 2 - 6 year. The percentages of severe CR at different stages are 25% ,65% ,49% and 45% respectively. In the latest 50 years, only the frequency of continuous rainfall in Plant-Shoot stage increased, while CR and severe CR became less at all the other stages with different magnitude.

关 键 词：河北省 棉花生育期 连阴雨 变化特征 

分 类 号：S162[农业科学—农业气象学]