干热风是我省小麦生育后期主要灾害性天气之一。常年十有八、九到小麦后期要发生“西南火风”的逼熟情况,一般年份减产5～10%,严重年份达20%以上。为避免或减轻干热风对小麦的危害,1974～1977年我省着重就石油助长剂御防小麦干热风的作用和效应进行调查、试验研究,并取得了一定成果。石油助长剂增产效果多数为10%左右,起到了“有灾抗灾,无灾增产”的作用,目前已大面积推广应用。 Dry hot air is one of the major disastrous weather in the late wheat growth in our province. The perennial year to eight, nine to the late wheat to occur “Southwest Fire Wind” ripening situation, the general year cut 5 to 10%, serious years of more than 20%. In order to avoid or reduce the harm of dry and hot wind to wheat, from 1974 to 1977, our province focused on the investigation and experimental research on the role and effect of petroleum aripe to prevent dry and hot wheat, and achieved certain results. The majority of petroleum boosters have the effect of increasing production by about 10% and have played a role in “disaster relief and disaster-free production increase” and have been widely applied and popularized at present.