Effects of Pig Manure and Its Organic Fertilizer Application on Archaea and Methane Emission in Paddy Fields

Jianqiang Wu, Min Wang, Peng Li, Leyang Shen, Mingyi Ma, Boyu Xu, Shuyuan Zhang, Chenyan Sha, Chunmei Ye, Lijun Xiong and Shenfa Huang
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Jianqiang Wu: Shanghai Academy of Environmental Sciences, Shanghai 200233, China
Min Wang: Shanghai Academy of Environmental Sciences, Shanghai 200233, China
Peng Li: College of Environmental Science and Engineering, Donghua University, Shanghai 201600, China
Leyang Shen: Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai 200090, China
Mingyi Ma: Shanghai Science and Technology Museum Station, Shanghai 200231, China
Boyu Xu: Shanghai Academy of Environmental Sciences, Shanghai 200233, China
Shuyuan Zhang: School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China
Chenyan Sha: Shanghai Academy of Environmental Sciences, Shanghai 200233, China
Chunmei Ye: Shanghai Academy of Environmental Sciences, Shanghai 200233, China
Lijun Xiong: Shanghai Academy of Environmental Sciences, Shanghai 200233, China
Shenfa Huang: Shanghai Academy of Environmental Sciences, Shanghai 200233, China

Land, 2022, vol. 11, issue 4, 1-22

Abstract: Paddy fields account for 10% of global CH 4 emissions, and the application of manure may increase CH 4 emissions. In this study, high-throughput sequencing technology was used to investigate the effects of manure application on CH 4 emissions and methanogens in paddy soil. Three treatments were studied: a controlled treatment (CK), pig manure (PM), and organic fertilizer (OF). The results showed that the contents of Zn, Cr and Ni in paddy soil increased with the application of manure, but the contents of heavy metals gradually decreased with the growth of rice. The Shannon index and Ace index showed that the application of pig manure and organic fertilizer less affected the diversity and richness of soil Archaea. The results of community composition analysis showed that Methanobacterium , Methanobrevibacter , Methanosphaera , Methanosarcina and Rice_Cluster_I were the main methanogens in paddy soil after manure and organic fertilizer application. Soil environmental factors were changed after applied manure, among which total potassium (TK) and total nitrogen (TN) were the main environmental factors affecting methanogens in paddy soil. The changes of soil environmental factors affected the community composition of methanogens, and the increase of the relative abundance of methanogens maybe the main reason for the increase of CH 4 emission flux. The relative abundance of methanogens and CH 4 emission flux in paddy soil were increased by both pig manure and organic fertilizer application, and pig manure had a bigger impact than organic manure.

Keywords: pig manure; organic fertilizer; paddy soil; CH 4; methanogens (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2022
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