近53年京津冀区域棉花生育期连阴雨的气候特征  

Climate Characteristics of Continuous Overcast and Rainy over last 53 Years in Beijing-Tianjin-Hebei Area During Cotton Growing Period

作　　者：安月改[1] 林艳[1] 

机构地区：[1]河北省气象与生态环境重点实验室/河北省气象局,石家庄050021

出　　处：《中国农业气象》2008年第3期375-378,381,共5页Chinese Journal of Agrometeorology

基　　金：河北省科学技术研究与发展计划课题(05820601D)

摘　　要：利用京津冀棉区45个气象观测站1954（或建站）-2006年的气象资料,分析了京津冀区域棉花生育期的连阴雨气候变化特征。结果表明：京津冀棉区各地棉花播种-出苗期、蕾期、花铃期和吐絮期连阴雨分别为1～2.5年一遇、1～3年一遇、1～3年一遇和3～5年一遇,重连阴雨所占比率分别为24%、39%、47%和45%。近53 a来播种-出苗期和蕾期连阴雨出现次数的变化趋势不明显,花铃期和吐絮期不论是连阴雨还是重连阴雨的出现次数呈不同程度的减少趋势,生育后期连阴雨次数减少有利于棉花产量和质量的提高。Based on the meteorological data of 45 meteorological stations from 1954 to 2006 in the cotton production areas of Beijing-Tianjin-Hebei, the climatic characteristics of the continuous overcast and rainy during cotton growing period was analyzed. The results showed that the return periods of the continuous overcast and rainy were with 1 - 2.5 years, 1 - 3 years, 1 - 3 years and 3 - 5 years for the seeding, bud, boll formation and boll-open stage respectively, while the percentage of the continuous overcast and rainy accounted for 24% , 39% , 47% and 45% during these stages respectively. In the last 53 years, the variation tendency of the continuous overcast and rainy occurred was not obvious for seeding and bud stages, while both the continuous overcast and rainy and the serious continuous overcast and rainy occurred during the boll formation and boll-open stages decreased to a certain extent. The decreased occurrences of the continuous overcast and rainy during the late growing periods of the cotton were favorable to the improvement of the cotton yield and quality.

关 键 词：连阴雨 气候特征 棉花生育期 京津冀区域 

分 类 号：S562[农业科学—作物学]