Organic material mulching regulated core microbial groups to promote soil carbon and nitrogen cycling and improve faba bean productivity under a triple-cropping system in purple soil hilly region of southwest China.

ABSTRACT:

Background

Intensive agricultural production leads to the reduction of soil carbon (C) and nitrogen (N) reserves, and organic material mulching (OMM) can improve microbial community structure and promote C and N accumulation. The multi-cropping system based on legumes can provide abundant organic mulching material and improve soil quality, but the mechanism by which OMM provides ecological benefits via C and N cycling in this system is still unclear.

Methods

In this study, a field experiment of organic mulch under the triple-cropping system of faba bean (Vicia faba L.)-corn (Zea mays L.)-sweet potato (Ipomoea batatas Lam.) was performed. Four treatments were set up: without organic material mulching (CK), straw mulching (S), milk vetch (Astragalus sin

SUBMITTER: Ren K 

PROVIDER: S-EPMC12307408 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature