Method for researching biochemical coupling influence of iron ore on nitrous oxide emission in rice soil nitrification process

The invention relates to the technical field of soil chemistry and environment, and discloses a method for researching biochemical coupling influence of iron ore on nitrous oxide emission in a rice soil nitrification process, which comprises the following steps: firstly, selecting different levels of pig breeding type and gleying type rice soil with obviously different soil iron contents; compared with the prior art, the N2O emission difference and main influence factors of the two kinds of rice soil are compared and analyzed, after experimental design comparison, the N2O emission amount of the gleying type rice soil is obviously higher than that of the stagnation type rice soil, and under the condition of saturated water content, the N2O emission amount of the test soil at different levels is obviously higher than that of the test soil at low water content. The main reason of significant difference of N2O emission of different levels of rice soil is iron content difference of different soil layers and differ