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为探讨不同氮肥在盐土上的应用效果,在盆栽条件下,研究了尿素、硝酸铵、尿素硝铵溶液、氯化铵及硝酸钠对玉米生长、养分积累及盐土土壤理化性状变化的影响。结果表明,施用氯化铵处理玉米茎叶和整株生物量显著高于尿素、硝酸铵和硝酸钠处理,而施用尿素硝铵溶液处理玉米茎叶和整株生物量最小。盐土中施用氯化铵玉米氮、磷、钾养分积累量均显著高于其他4种氮肥处理,其中,施用氯化铵处理氮、磷、钾的积累量较施用尿素硝铵溶液处理分别高56.78%、76.88%、77.75%。在本试验中,不同氮肥在盐土上的应用效果差异显著,其中以氯化铵效果最佳。
In order to explore the application effects of different nitrogen fertilizers on saline soils, the effects of urea, ammonium nitrate, urea ammonium nitrate solution, ammonium chloride and sodium nitrate on the growth and nutrient accumulation of maize and soil physical and chemical properties were studied under potted condition. The results showed that the treatment of ammonium chloride treatment of corn stems and leaves and the whole plant biomass was significantly higher than the urea, ammonium nitrate and sodium nitrate treatment, while applying urea ammonium nitrate solution treatment of corn stems and leaves the smallest biomass. The nutrient accumulation of nitrogen, phosphorus and potassium in cornstarch was significantly higher than that of the other four kinds of nitrogenous fertilizers in the application of ammonium chloride. The accumulation of nitrogen, phosphorus and potassium in ammonium chloride was 56.78% %, 76.88%, 77.75%. In this experiment, the effects of different nitrogen fertilizers on salty soil were significantly different, of which ammonium chloride was the best.