摘要
利用湖南省96个气象站1961～2010年地面气象资料,以及湖南省农气站1991～2010年油菜观测生育期、产量结构等农业气象资料,结合低温连阴雨指标,分析湖南省油菜生长期连阴雨气象灾害发生的灾害强度时空变化趋势。结果表明:湖南省油菜出苗期连阴雨发生强度呈下降趋势,开花期、成熟期连阴雨发生强度变化较小,区域分布规律以出苗期集中在湘西北,开花期集中在湘中、湘东北地区,成熟期集中在湘南地区。
Combined with indexes of low temperature and continuous rain,the ground meteorological data of 96 meteorological stations in Hunan province during 1961～2010 and the agricultural meteorological data,such as observation of growth period and yield structure of rape,during 1991～2010 collected from Hunan Agricultural Meteorological Stations were used to analyze the spatial-temporal variation trend of disaster intensity for continuous rain during growth period of rape in Hunan province.The results showed that in Hunan province,the occurrence intensity of continuous rain during seedling stage of rape showed a decline trend,and it vary a little in flowering stage and mature stage;the continuous rain showed concentratedly in northwest Hunan in seedling stage,in central Hunan and northeast Hunan in flowering stage and in southern Hunan in mature stage.
出处
《湖南农业科学》
2012年第10期93-96,共4页
Hunan Agricultural Sciences
基金
国家科技支撑计划(2012BAD201305-01-05)
湖南省气象局短平快项目(200901)
关键词
湖南
油菜
连阴雨
时空规律
Hunan
rape
continuous rain
space-time laws
