复合肥长效添加剂是将脲酶抑制剂、硝化抑制剂、磷活化剂有机结合,利用其协同作用比单一抑制剂使肥料具有更长供肥期和更高利用率,达到一次性投肥免追肥的目的。这是提高作物产量和提高化肥利用率的有效手段之一,应大力推广在复混肥中添加这种长效添加剂(NAM)。 The compound fertilizer long-acting additive is that the urease inhibitor, the nitrification inhibitor and the phosphorus activator are organically combined. Compared with a single inhibitor, the synergistic effect can make the fertilizer have a longer supply period and a higher utilization rate and achieve a one-time fertilizer-free top dressing the goal of. This is one of the effective measures to increase crop yield and increase fertilizer use efficiency. It is strongly recommended to add this long-lasting additive (NAM) to compound fertilizer.