合理施肥是农业增产的重要措施之一。现介绍几种国内外施肥新技术。一、灌溉施肥法将肥料溶解在灌溉水中,通过喷灌或滴灌机械,使水、肥同时进入土壤。此方法不仅可节省化肥的消耗量,还能明显地提高肥料利用率。试验表明,滴灌施肥可节省氮肥44～57％,喷灌施肥可节省11～29％。一般施肥法,氮肥利用率只有50～70％,而利用灌溉施肥,氮肥利用率可 Rational fertilization is one of the important measures to increase agricultural output. Now introduce several new fertilization techniques at home and abroad. First, the method of irrigation and fertilization Fertilizer dissolved in irrigation water, irrigation or drip irrigation machinery, so that water and fertilizer into the soil at the same time. This method can not only save fertilizer consumption, but also significantly improve fertilizer utilization. The experiment shows that drip irrigation can save 44-57% of nitrogen fertilizer and sprinkler irrigation can save 11-29%. The general fertilization method, nitrogen utilization rate of only 50 to 70%, while the use of irrigation and fertilization, nitrogen use efficiency