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北方淹育水稻土不同施肥处理之间，土壤中速效氮含量的高低顺序为施猪粪及猪粪配施化肥＞活化沸石加化肥或沸石加化肥＞单施活化沸石和单施沸石＞单施化肥和对照。五次采样分析得出，四种方法测定的速效氮随温度具有一致的变化趋势，其中碱解氮变化最稳定，氧化镁蒸馏氮变化最大，它们的绝对含量是碱解氮＞高锰酸钾蒸馏氮＞氧化镁蒸馏氮＞氯化钠扩散氮。
In the northern part of paddy soils paddied with different fertilization treatments, the contents of available nitrogen in soil were in the order of applying pig manure and pig manure in the order of fertilizers> activated zeolite plus chemical fertilizer or zeolite plus chemical fertilizer> single active zeolite and single zeolite> single application Fertilizer and control. The results of five sampling analyzes showed that the available nitrogen with the four methods had the same trend with the temperature. Among them, the change of alkali nitrogen was the most stable and the change of nitrogen in the magnesium oxide distillation was the biggest. The absolute content of nitrogen was the basic nitrogen> potassium permanganate Distilled nitrogen> Distilled magnesium oxide> Sodium chloride diffuses nitrogen.