Summary
The application of amendments can alter soil properties and hold great potential for soil organic carbon (SOC) sequestration. However, the impacts of amendments application on soil microbial carbohydrate-active enzyme (CAZyme) genes and their roles in regulating SOC in saline-alkali soils remain incompletely understood. Here, we employed a metagenomics sequencing to explore the effects of amendments application on CAZyme encoding genes. Four treatments were included: no amendment control (CK); desulfurization gypsum (DE); cattle manure(CM); and desulfurization gypsum plus cattle manure (DC). Our findings showed that amendments application notably reduced soil pH, electrical conductivity (EC), improved soil nutrients and promoted SOC accumulation. Compared to CK treatment, DC treatment rais
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