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、九到小麦生育后期要发生“西南火风”的逼热情况,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预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一般为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. Ten to eight perennial year to nine to the late wheat growth to “Southwest Fire Wind” to force the situation, the general cut 5-10% annual output, serious years of more than 20%. In order to avoid or reduce the harm of dry and hot wind to wheat, the province from1974 to 1977 focused on the investigation and experimental research on the role and effect of petroleum aids to prevent wheat dry-hot wind and achieved some results. The effect of oil boosters is generally about 10%, played a “disaster relief, disaster-free production increase” role, has been widely applied.