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碳酸氢铵在我市施用量占氮素化肥总量的90％以上,为了减少挥发,提高肥效,近几年来,我们采取“深施,跟水,埋严,踩实”的追肥方法,收到良好效果。但这样做比较费工,保肥效果仍不理想,尤其一些沙性地追的浅,跑肥漏肥严重。1976年春,我市开始用碳铵做成球肥追喂小麦和玉米的试验,收到了明显的增产效果。实践表明,追施球肥有四大好处:一是减少挥发、渗漏,提高肥效。球肥是用黄粘
In order to reduce the volatilization and improve the fertilizer efficiency, the application of ammonium bicarbonate accounts for more than 90% of the total nitrogenous fertilizer in our city. In recent years, we adopt the method of dressing with deep application, follow the water, To good effect. However, it is more laborious to do so, and the effect of preserving fertilizer is still not satisfactory. In particular, some sand tracing shallow and running fertilizer has serious leakage of fertilizer. The spring of 1976, the city began to use ammonium bicarbonate made of wheat and corn chase after the test, received a significant increase in production. Practice shows that there are four top-dressing ball fertilizer benefits: First, reduce evaporation, leakage, improve fertilizer efficiency. Sphere is yellow sticky