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干热风是某些年份的春夏之交干热季节里出现的高温低湿天气现象,它是我省小麦生长后期的主要农业气象灾害,其危害特点是:发生年机率大,次数多、范围广、成灾率大。轻灾年减产5%左右,重灾年减产10—20%,个别年份高达30%左右。本区划是参照全国小麦干热风协作组共同商定的区域性指标并结合我省特点编制的。一、干热风指标我省各地过去沿用的干热风标准不一致,缺乏比较性,给生产、科研与预报带来一定困难。
Hot and dry wind is the phenomenon of high temperature and low humidity occurring in the dry and hot season in the spring and summer of some years. It is the major agricultural meteorological disaster in the late wheat growing season in our province. The harmful features are: the annual incidence rate is high, the frequency is large and the range is wide , Disaster rate. Disaster relief year reduction of about 5%, 10-20% reduction in heavy disaster, individual years up to 30%. The zoning is based on the national wheat dry and hot wind collaborative group agreed to jointly develop the regional indicators and characteristics of our province prepared. First, the hot and dry wind indicators Dry and hot wind standards used throughout the past in our province inconsistent, the lack of comparability, to produce, research and forecasting has brought some difficulties.