上海地区除低温、暴雨、冰雹和大风外,干热风、干旱也是主要农业气象灾害之一。从近百年气象资料分析:干热风在三麦或早稻灌浆时期出现的机率有25％左右,即平均每四年一次,解放以来就有7～8年受到不同程度的影响,严重的年份要减产一成以上。连续无雨或少雨引起的空气、土壤干旱,对棉花生产带来的影响,三年左右就有一次,解 In addition to low temperature, rainstorms, hail and winds in Shanghai, dry wind and drought are also major agricultural meteorological disasters. From the analysis of meteorological data in recent one hundred years, the dry-hot wind has a 25% probability of occurrence in the three wheat or early rice filling periods, that is, once every four years on average, and has been affected to varying degrees for 7-8 years since liberation, More than one percent. Continuous rain or less rain caused by air, soil drought, the impact on cotton production, once in about three years, the solution