Greenhouse Gas Emissions and Bacterial Community Structure as Influenced by Biodegradable Film Mulching in Eastern China

Machine transplanting technology of biodegradable films has solved the problems higher cost artificial film and serious environmental pollution polyethylene residue. Previous studies have shown positive impact mulching on mitigating global warming potential. However, mechanisms underlying association between greenhouse gas emissions bacterial community structure in paddy field soil with (BM) still remain limited. In this study, associated non-mulching, a Eastern China were analyzed over 2019 2020 rice growing seasons. Rice cultivation significantly inhibited CH4 from paddy, mainly due to significant reduction methane emission peaks. Film increased diversity as revealed by 16S rRNA gene sequencing. The relative abundance methanogens was decreased, while methanotrophs BM treatment, change pattern basically consistent emissions. N2O during growth period showed pronounced downward trend. total bacteria involved nitrification denitrification under BM. Mulching improved nutrient availability yield 5.0%. intensity (GHGI) 46.9%. mechanical could promote increases mediate potential (GWP) gases fields Middle-Lower Yangtze Area. rational use would play role carbon neutrality fields. This study provided theoretical basis for sustainable agricultural development.