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本文对不同类型的水稻土壤的供氮特征进行了研究。研究认为，水稻土壤的氮素矿化和水稻的吸氧量与产量关系密切。以施肥来协调水稻土壤供氮量和水稻需氮量之间平衡，可以使水稻稳产高产。
In this paper, the nitrogen characteristics of different types of paddy soils were studied. The study suggests that nitrogen mineralization in paddy soil and rice oxygen uptake and yield are closely related. With fertilization to coordinate the balance between nitrogen supply for paddy soil and nitrogen demand for rice, we can make rice yield stable and high yield.