影响土壤NO_3^--N淋失的因素及预防措施

The factors influencing loss of nitrate nitrogen in soil and precautionary measures

农业生产中的不合理栽培造成的NO-3 -N淋失问题不仅大大降低了肥料利用率 ,增加了生产成本 ,而且对生态环境造成的污染问题也日益严重。从施肥、地面接水量、土壤性质、作物种类及土壤 -植物系统的组合特征 5个方面扼要概述了近阶段影响土壤NO-3 -N淋失因素的研究进展 ,并提出了减少NO-3 -N淋失 。

The leaching loss of nitrate nitrogen strongly depends on the rate of nitrogenous fertilizer and water of soil This paper summarizes briefly the factors of leaching loss of nitrate nitrogen from five aspects andency of nitrogenous fertilizer