以碳酸氢铵、尿素等作水稻田基肥施用,已成为一项节肥、增产的有效施肥新技术,目前全国推广面积已达1亿亩以上。基施氮肥与习惯的分次追肥相比,可提高肥料利用率15—20％,使稻谷增产10—15％以上,每亩还可节约施肥用工1—2个。氮肥基施通常采用的方法有二:一种方法是先将所需氮肥,均匀撤在田面,然后犁田耕翻并反复 With ammonium bicarbonate, urea and other rice-based paddy fertilizer application, has become a fatter, an effective fertilization of new technologies, the current promotion of the country has reached more than 1 million mu. Base nitrogen fertilizer and the habit of sub-top dressing compared to improve fertilizer utilization 15-20%, so that paddy yield 10-15% or more per mu can also save fertilizer 1-2. Nitrogen based facilities commonly used methods are two: one method is to first nitrogen fertilizer required, uniform withdrawal in the field, and then plowing plowing and repeatedly