采用尼龙网袋法,模拟小麦玉米种植模式,研究了不同水氮条件下冬小麦和夏玉米秸秆养分释放特征。研究表明,小麦秸秆和玉米秸秆腐解情况都表现为前期腐解快,后期腐解速度缓慢;室内培养条件下,腐解前20天为腐解快速期,腐解缓慢期大约为20~60天,其后为腐解停滞期。玉米秸秆腐解速度比小麦秸秆快。添加氮素对加快秸秆腐解有一定的效果。土壤含水量为16%和20%对秸秆腐解速度无影响。小麦与玉米秸秆中养分释放率均表现为K>P>C>N,小麦和玉米秸秆中养分的释放量均表现为C>K>N>P。 Nylon mesh bag method was used to simulate the wheat and corn planting patterns to study the nutrient release characteristics of winter wheat and summer corn straw under different water and nitrogen conditions. The results showed that the decomposition of wheat straw and corn stalks showed that the decomposition of wheat straw and corn stalks were fast in the early stage and slow in the late stage. Under the indoor cultivation conditions, the rotten period was 20 days before decomposing and the decomposing period was about 20-60 Days, followed by the decommissioning stagnation. Corn stalks decompose faster than wheat straw. Adding nitrogen to accelerate the decomposition of straw have a certain effect. Soil moisture content of 16% and 20% had no effect on the decomposition rate of straw. The nutrient release rates in wheat and corn stover were both K> P> C> N, and the release of nutrients in wheat and corn stalks showed C> K> N> P.