近28a河南主要农业气象灾害及其影响

利用河南1978-2005年农作物受灾面积资料和新中国成立以来的产量资料,分析了河南主要农业气象灾害的变化特征和对农业生产的影响,结果表明,28 a来河南农作物受灾面积呈上升趋势,其阶段性变化为20世纪70年代后期至80年代前期较少,80年代中后期至21世纪初明显增多,最近几年又明显减少。气候条件对农业生产的影响以50年代最有利,80年代次之,70年代较差,60年代最差。

Main Agrometeorological Disasters and Their Impact in Recent 28 a in Henan

Using the crops damage area data during 1978-2005 and yield data since the founding of New China,the variation characteristic of Henan provincial main agrometeorological disasters and their impact are analyzed.Results show the crops damage area is on the rise in recent 28 years.The crops damage area is less during the late 1970s and early 1980s than during the mid-late 1980s and early 21st Century;and is obvious reduction in latest years.The impact of meteorological conditions on agricultural production is favorable in the 1950s,then in the 1980s,worse in the 1970s and worst in1960s.