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碳酸氢铵是北京市郊区农业上施用的主要氮肥品种,占固体氮肥总量的80%以上。它具有成本低,肥效快和不破坏土壤结构等优点。但这种化肥的挥发性较强,如粉肥表施,氮素秦利用率仅在30%左右。近三年来,我们试验了碳铵为主的化肥造球深施,肥效良好。球肥深施比等量粉肥深施,作物对氮素吸收利用率有所提高,增产粮菜10—20%。同时还研究了不同土壤、气候条
Ammonium bicarbonate is the main agricultural nitrogen fertilizer applied on the outskirts of Beijing, accounting for more than 80% of the total nitrogenous fertilizer. It has the advantages of low cost, fast efficiency and does not destroy the soil structure. However, the strong volatility of such fertilizers, such as fertilizer, fertilizer, nitrogen and nitrogen utilization rate of only 30%. In the past three years, we experimented with ammonium bicarbonate-based fertilizers for deep balling and good fertilizer efficiency. Fertilizer deep application of fertilizer than the same amount of deep application of fertilizer, nitrogen absorption and utilization of crops has increased, increased grain 10-20%. At the same time also studied different soil, climate