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褐煤、糠醛渣为缓释材料,与氮肥配合施用进行谷子盆栽试验,研究了对氮肥利用率的影响。结果表明,褐煤、糠醛渣分别与氮肥配合对氮肥利用效果总体上比单独施用同水平氮肥好;处理T11(褐煤3.00g、碳铵4.05g)谷子氮肥利用率最高(76.81%),相对氮素利用率提高了60.59%;从经济效益分析,氮素的利用率以处理T5(糠醛渣3.00g、尿素1.50g)的收益最优。
Lignite and furfural residue were slow-release materials, and pot experiments were conducted in combination with nitrogen fertilizer to study the effect on nitrogen use efficiency. The results showed that the utilization efficiency of nitrogenous fertilizer with lignite and furfural residue, respectively, was better than the same level of nitrogen fertilizer alone. The utilization rate of nitrogen fertilizer was the highest (76.81%) in treatment T11 (3.00g lignite and ammonium bicarbonate 4.05g) Utilization rate increased by 60.59%; from the economic efficiency analysis, nitrogen utilization to deal with T5 (furfural residue 3.00g, urea 1.50g) the best returns.