A novel amended nitrification inhibitor confers an enhanced suppression role in the nitrification of ammonium in soil

Abstract Purpose Nitrification inhibitor plays an important regulatory role in inhibiting the nitrification of ammonium soils. However, most inhibitors lack sustainable effects suppressing ammonium. In this study, a novel DMS was prepared and tested to explore its lasting effect suppression black soil. Materials methods Both culture experiments field trial were performed Three kinds (NIs), dicyandiamide (DCD) with low bioactivity, 3,4-dimethylpyrazole phosphate (DMPP) high sulfate zinc (DMS) long half-life, applied into soils, respectively, abundance changes ammonia-oxidizing archaea (AOA) bacteria (AOB) investigated; then, accumulation inorganic nitrogen, nitrogen use efficiency, crop yields furtherly evaluated. Results discussions A activity half-life maintained persistent suppression, remarkably increased soil, thus improving efficiency yields. This study implies that lowering loss nitrification-triggered soil is great importance for efficiency. Conclusions provided insight under excessive application fertilizer Compared activity, reasonably prolonging validity more strategy increasing inhibition, survival period should be crucial factor