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碳酸氢铵是我省的主要氮肥之一,由于不稳定,容易挥发,加之渗漏、反硝化、化学脱氮,利用效果很低,只有30%左右。近年来采用深施、造球深施等方法,利用率虽有提高,但仍不理想。过磷酸钙是我省的主要磷肥品种,目前有些工厂生产的产品,有效磷含量低,且含有较高的游离酸,对作物有害,加之在石灰性土壤中,容易被土壤钙离子固定,利用效果更低。为了进一步提高碳酸氢铵与过磷酸钙的增产效果及利用率,探索简便易行,适合
Ammonium bicarbonate is one of the main nitrogenous fertilizers in our province. Due to its instability and volatility, ammonium bicarbonate is only 30% or so because of its low leakage, denitrification and chemical nitrogen removal. In recent years, the use of deep facilities, deep ball making and other methods, although the utilization rate increased, but still not ideal. Superphosphate is the main phosphate fertilizer varieties in our province. At present, some factories produce products with low available phosphorus and high free acid which is harmful to crops. In addition, in calcareous soils, it is easy to be fixed by calcium ions in the soil. The effect is lower. In order to further improve the yield and utilization of ammonium bicarbonate and superphosphate, explore simple, suitable