Fig. 6: Conceptual diagram of interactions between nitrogen-stimulated decomposers and non-decomposers and their contribution to residue decomposition.

Nitrogen-rich environment favors the Bacillus decomposers and fast-growing non-decomposer S. sciuri. Under nitrogen fertilization, the fast-growing non-decomposer S. sciuri restricts the growth and decomposition ability of weak decomposers through sugar depletion, resulting in the restructuring of a community dominated by strong decomposers, thereby facilitating residue decomposition.