Biomass composting combined with a biological nitrification inhibitor influences greenhouse gas emission and microbial community in rice paddy

Characterizing the composition of the microbial community in the rhizosphere associated with higher crop yields and (or) greenhouse gases is an important first step in understanding the role of microbiota in paddy fields. The aim of these studies was to decipher the effects of straw tea composting in combination with the addition of biological nitrification inhibitors on greenhouse gas emissions and the microbial community in paddy fields. Quan 9 you 063 varieties of rice in Fengyang, Anhui Province were used as the study object, the amount of conventional fertilizer as the control CK. The results showed that the addition of biological nitrification inhibitors could reduce gas emissions and significantly increase rice yield by 41.70%, as well as improve root system growth and development. In addition, compost products can reduce greenhouse gas emissions. However, the biological nitrification inhibitor affected communities of nitrogen-fixing bacteria (Proteobacteria), nitrogen-eating bacteria (Nitrospirae) and Verrucomicrobia, which is known to be one of the most common and diverse species in soil habitats. As with bacteria, different community structures and distribution patterns of archaea have been observed in soil; The Thaumarchaeota type was the most important of all treatments.