碳酸氢铵(以下简称碳铵)是我区常用化肥之一。由于在生产上多采用表面撒施的追肥方法,氮素肥份挥发比较严重,影响肥效。据在灌区7个旗县12个公社调查:小麦分蘖期表面撒施碳铵,每斤肥料增产粮食0.3—1.5斤,平均为0.7斤左右,肥份利用率只有16%左右,肥效低,增产不增收,这是当前生产上存在的一个应该引起注意的问题。 Ammonium bicarbonate (hereinafter referred to as ammonium bicarbonate) is one of the commonly used fertilizers in our zone. As in the production of surface top dressing methods, nitrogen fertilizer more volatile, affecting fertilizer efficiency. According to the investigation of 12 communes in 7 counties in the irrigation area, ammonium bicarbonate was applied to the surface at the tillering stage of wheat and the grain yield was 0.3-1.5 kg per kilogram of fertilizer, with an average of about 0.7 kg. The fertilizer utilization rate was only about 16% This is a problem that should be paid attention to in current production.