摘要
[目的]分析降水变化掌握干旱程度为农业生产提供气候依据。[方法]采用数理统计方法,进行对比、趋势分析降水变化对干旱程度的影响。[结果]建昌地区作物生长季降水量近50年减少108mm,并以夏季减少为主体。春秋两季干旱最严重频率为80%。与全国第2次农业资源普查时相比,作物生长季干旱频率增加26.6%,播种出苗阶段干旱频率减少13.6%,作物旺盛生长阶段干旱频率增加7.7%,成熟收获阶段干旱频率增加19.2%。[结论]目前建昌地区的气候朝着偏旱至半湿润半干旱方向发展。
[Objective]The aim is to provide climate basis for agricultural production through analyzing precipitation variation and mastering drought degree.[Method] By using mathematical statistical methods,comparison and trend analysis,the impact of precipitation change on drought is analyzed.[Result]The precipitation during the crop growing season in the late 50 years decreases by 108 mm,especially in summer.The frequency of the serious drought in spring and autumn is 80%.Compared with the second national survey of agricultural resources,the frequency of drought increases by 26.6% in the crop growing season,decreases by 13.6% during the sowing and seedling stage,grows by 7.7% during the vigorous growth season and increases by 19.2% during the maturity and harvest stage.[Conclusion] The current climate in Jianchang is developing from slightly drought to semi-humid and semi-arid.
出处
《安徽农业科学》
CAS
北大核心
2010年第29期16327-16328,16331,共3页
Journal of Anhui Agricultural Sciences
关键词
作物生长季
降水
农业
干旱
建昌
Crop growing season
Precipitation
Agriculture
Drought
Jianchang
