Long-term effects of straw return and straw-derived biochar amendment on bacterial communities in soil aggregates.

ABSTRACT: Improving soil structure, fertility, and production is of major concern for establishing sustainable agroecosystems. Further research is needed to evaluate whether different methods of straw returning determine the variations of soil aggregation and the microbial community in aggregates in the long term. In this study, we comparatively investigated the effects of long-term fertilization regimes performed over six years, namely, non-fertilization (CK), chemical fertilization (CF), continuous straw return (CS), and continuous straw-derived biochar amendment (CB), on soil aggregation and bacterial communities in rice-wheat rotation systems. The results showed that straw/biochar application increased soil nutrient content and soil aggregate size distribution and stability at both 0-20 cm and 2

SUBMITTER: Bai N 

PROVIDER: S-EPMC7217948 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature