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采用室内恒温培养法研究了秸秆配施氮、磷肥对潮土供氮磷特性的影响．结果表明：秸秆施入土壤２～３个月后，土壤碱解氮有明显提高．秸秆单施或与磷肥配施，矿化过程表现为前期净固持后期净矿化．配施氮肥，麦秸和玉米秸前期矿化氮释放量很少，而花生秸矿化可明显提高土壤碱解氮水平．不同秸秆矿化对土壤速效磷影响不同，这与其Ｃ／Ｐ比有关，但前期（１～２个月）都能提高土壤速效磷水平．
The effects of nitrogen and phosphorus fertilizers on the characteristics of nitrogen and phosphorus in alluvial soil were studied by means of indoor incubation. The results showed that after 2 to 3 months of straw application, the soil available nitrogen increased obviously. Single application of straw or with phosphate fertilizer, the mineralization process showed a net mineralization during the early stage of net retention. With the application of nitrogen, wheat straw and corn stalks early release of mineralized nitrogen is very small, and mineralization of peanut straw can significantly improve the level of soil available nitrogen. Different straw mineralization had different effects on available P in soil, which was related to C / P ratio, but the content of available P could be increased in the early stage (1-2 months).