南阳德润公司复肥厂利用对辊冷压造粒设备,开发出碳铵基小麦专用肥,取得了明显的施用效果。1氮、磷、钾比例参数的确定小麦生长期长,需肥量多,每生产100 kg小麦籽粒,需从土壤中吸收N 3 kg、P2O51.25 kg、K2O 2.5kg。小麦不同产量水平适宜N、P比与施氮量见表1。表1小麦不同产量 Nanyang Derun compound fertilizer plant using cold roll granulation equipment, developed ammonium bicarbonate wheat-specific fertilizer, and achieved significant application results. 1 Determination of Nitrogen, Phosphorus and Potassium Ratio Parameters The wheat has a long growing period and requires a large amount of fertilizer. Each 100 kg of wheat grain is produced and it needs to absorb N 3 kg, P 2 O 5.25 kg, and K 2 O 2.5 kg from the soil. Different yield levels of wheat N, P ratio and nitrogen rate in Table 1. Table 1 Wheat different yields