Effects of Biological Nitrification Inhibitor on Nitrous Oxide and nosZ, nirK, nirS Denitrifying Bacteria in Paddy Soils

Xingchen Huang, Yuning Zou, Cece Qiao, Qiumeng Liu, Jingwen Liu, Rui Kang, Lantian Ren () and Wenge Wu ()
Additional contact information
Xingchen Huang: Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China
Yuning Zou: Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China
Cece Qiao: Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China
Qiumeng Liu: Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China
Jingwen Liu: Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China
Rui Kang: Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China
Lantian Ren: Anhui Engineering Research Center for Smart Crop Planting and Processing Technology, Anhui Science and Technology University, Fengyang 233100, China
Wenge Wu: Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230041, China

Sustainability, 2023, vol. 15, issue 6, 1-12

Abstract: This study aimed to investigate the effects of a biological nitrification inhibitor on nitrous oxide emission and rice yield quality in paddy soils and its effects on denitrifying the bacteria of nosZ, nirK, and nirS types. Two treatments were performed: (1) using a local conventional fertilizer as the control CK; (2) using the partial application of a conventional fertilizer + biological nitrification inhibitor as SW. N 2 O emission was measured using gas chromatography; qPCR amplification was performed using primers for the targeted functional genes, nosZ, nirS, and nirK, and denitrifying functional gene abundance and denitrifying microbial community structure were analyzed using fluorescence quantification and high–throughput sequencing, respectively. The results reveal that the biological nitrification inhibitor resulted in a 41.83% reduction in N 2 O, relative to the normal fertilizer treatment. Meanwhile, rice yield increased by 15.45% and related quality indexes were also improved. This can promote the reproduction of bacteria with the nosZ gene while inhibiting the growth of bacteria with nirS and nirK genes. The core bacteria, Nitrosospira , Rhodanobacter , Bradyrhizobium , Tardiphaga , Rhodopseudomonas , and Paracoccus, positively correlated with N 2 O emissions, while core bacteria Azospirillum , Burkholderia , and Mesorhizobium negatively correlated with N 2 O emissions. Therefore, the application of a biological nitrification inhibitor could be an effective measure to promote rice yield and quality, reduce N 2 O emissions, and affect key denitrifying bacteria.

Keywords: biological nitrification inhibitor; yield quality; N 2 O emissions; denitrifying bacteria (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/6/5348/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/6/5348/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:6:p:5348-:d:1100225

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().