干热风是我省小麦高产、稳产的重要限制因子之一,严重的年份可减产10—20%,1980年因重干热风影响,小麦千粒重较正常年降低5—10克,造成大面积减产。轻的年份也减产5%左右。“小麦干热风”是小麦灌浆到成熟期间经常出现的一种高温、低温并伴有一定风力的灾害性天气。我省是季风大陆性气 Dry and hot wind is one of the important limiting factors for high yield and stable yield of wheat in our province. In severe years, it can reduce 10-20%. In 1980, due to the influence of heavy dry and hot winds, wheat grain weight is reduced by 5-10 grams compared with that of normal year, resulting in large-scale yield reduction. Light years also cut about 5%. “Wheat dry hot air” is a high temperature, low temperature and some windy disastrous weather that often occurs during wheat filling to maturity. My province is monsoon continental gas