The inhibiting effects of biochar-derived organic materials on rice production

Yanfang Feng; Huayong He; Lihong Xue; Yang Liu; Haijun Sun; Zhi Guo; Yueman Wang; Xuebo Zheng

doi:10.1016/j.jenvman.2021.112909

The inhibiting effects of biochar-derived organic materials on rice production

J Environ Manage. 2021 Sep 1:293:112909. doi: 10.1016/j.jenvman.2021.112909. Epub 2021 Jun 5.

Authors

Yanfang Feng¹, Huayong He¹, Lihong Xue¹, Yang Liu², Haijun Sun³, Zhi Guo⁴, Yueman Wang⁵, Xuebo Zheng⁶

Affiliations

¹ School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212001, China; Key Laboratory of Agro-Environment in Downstream of Yangze Plain, Ministry of Agriculture and Rural Affairs of the People's Republic of China/Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
² Institute of Agricultural Information, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
³ College of Forestry, Nanjing Forestry University, Nanjing, 210037, China.
⁴ Key Laboratory of Agro-Environment in Downstream of Yangze Plain, Ministry of Agriculture and Rural Affairs of the People's Republic of China/Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
⁵ Key Laboratory of Agro-Environment in Downstream of Yangze Plain, Ministry of Agriculture and Rural Affairs of the People's Republic of China/Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China; College of Resources and Environment Science, Nanjing Agricultural University, Nanjing, 210095, China.
⁶ Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China. Electronic address: zhengxuebo@caas.cn.

PMID: 34102501
DOI: 10.1016/j.jenvman.2021.112909

Abstract

The effects of PBC and HBC on rice production, NUE and corresponding mechanisms were examined. Six treatments, P05, P30, H05, H30 (P: PBC; H: HBC; 05 and 30 represented the application rate of 0.5 and 3.0% w/w), CKU (urea application without char) and CK (no application of char and urea), were set up. Results showed that P05, P30 and H05 increased grain yield by 1.8-7.3% (P > 0.05), whereas H30 reduced grain yield by 60.4% (P < 0.05), compared to CKU. Meanwhile, HI under P05, P30 and H05 increased by 3.4-3.6%, while H30 decreased by 9.1% (P < 0.05). NUE and NAE showed similar trends with rice yield. By investigation, the excessive introduction of BDOM plays a crucial role in the reduction of rice production and NUE under higher HBC application. GC-MS/MS analysis showed that the soluble BDOM of HBC and PBC was quite different, and compounds such as 2,6-dimethoxyphenol might stress rice growth. ESI-FT-ICR-MS analysis showed that the BDOM of HBC contained a certain quantity of aromatic compounds, which may also stress rice growth. Overall, HBC pretreatment should be conducted, and the application rate should be strictly controlled before its agricultural application.

Keywords: Biochar-derived organic materials; Hydrochar; Nitrogen use efficiency; Pyrochar; Rice yield.

MeSH terms

Charcoal
Fertilizers / analysis
Nitrogen / analysis
Oryza*
Soil
Tandem Mass Spectrometry

Substances

Fertilizers
Soil
biochar
Charcoal
Nitrogen