在小麦生产栽培中,化肥施用量日益增加,在施用方法上,对速效氮化肥过去多作追肥施用,虽然外地有的地区用一定数量的氮化肥作种肥取得良好效果,但还未大面积推广使用。一般群众认为化肥早施于田中怕挥发引响肥效,并且顾虑量少,前期施用 In the wheat production and cultivation, the application of chemical fertilizers is increasing day by day. In terms of the application methods, more nitrogenous fertilizer was used for top dressing in the past. Although a certain amount of nitrogenous fertilizer was used as a kind of fertilizer to obtain good effect in some areas in the world, Promote use. The general public believes that as soon as possible, fertilizers are applied to fields and are afraid of volatilization and lead to the effect of fertilizer, and there is less concern and pre-application