Effects of Different Rotation Patterns of Oil-Rice on Methane and Nitrous Oxide Emissions in Rice Fields

被引：3
|
作者：
Chen Y.-D. [1 ]
Zhao Y. [1 ]
Gao D.-J. [1 ]
Luo X.-F. [1 ]
Cui T. [2 ]
Tong Z.-Q. [2 ]
Wu J.-M. [3 ]
机构：
[1] Hunan Rice Research Institute, Changsha
[2] Nanxian Agricultural and Rural Bureau, Nanxian
[3] Hunan Engineering Research Center for Prevention and Control of Agricultural Non-point Source Pollution in the Basin of Lake Dongting, Institute of Agriculture Environment and Ecology, Hunan Academy of Agricultural Science, Changsha
来源：
Huanjing Kexue/Environmental Science | 2020年 / 41卷 / 10期
关键词：
Greenhouse gas intensity; Methane; Nitrous oxide; Paddy field; Rotation patterns;
D O I：
10.13227/j.hjkx.202002107
中图分类号：
学科分类号：
摘要：
A field experiment was carried out to investigate the effects of different rice-rape rotation systems on methane and nitrous oxide emissions, which were measured using the static chamber/gas chromatography method, prediction of their global warming potentials (GWP), and greenhouse gas intensity (GHGI) in paddy fields. The results showed that the average cumulative emissions of CH4from a double cropping paddy field, single season rice field (including middle or late), rape field, and leisure land were 135.25, 55.64, 5.05, and 1.89 kg•hm-2, respectively. The CH4 emission during the rice season accounted for 91.8%-98.5% of the annual CH4 emission in different rotation years, and the contents of dissolved organic carbon in paddy soil exhibited a significantly positive correlation with CH4 emission. The CH4 emission in conventional late rice paddy was 18.7% higher than that of hybrid late rice paddy (P<0.05). The average cumulative emissions of N2O from double cropping paddy field, single season rice field (including middle or late), rape field, and leisure land were 0.94, 0.64, 1.38, and 0.24 kg•hm-2, respectively. Out of the total annual N2O emission, 57.2% to 70.2% was from the rape field; 17.8% and 30.6% was due to the winter fallow treatments with previous crop type of double corpping rice and single season rice, respectively. There was no significant difference in N2O emission between hybrid rice and conventional rice paddy fields. The GWP of double cropping rice-winter fallow and double cropping rice-rape was higher than that of rice-rape and rice-winter fallow, and the GWP of CH4 in rice season accounted for 71.2% to 90.9% of the annual GWP of rotation. The highest treatment of GHGI was rice-rice-rape, and the treatment of rice-oil and rice-winter slack was lower. According to the comprehensive environmental and economic benefits, the late hybrid rice-rape patterns should be selected to reduce greenhouse gases in multiple cropping rice fields of South China. © 2020, Science Press. All right reserved.
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页码：4701 / 4710
页数：9
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共 42 条
  • [1] Ghosh S, Majumdar D, Jain M C., Methane and nitrous oxide emissions from an irrigated rice of North India, Chemosphere, 51, 3, pp. 181-195, (2003)
  • [2] Simpson I J, Edwards G C, Thurtell G W., Variations in methane and nitrous oxide mixing ratios at the southern boundary of a Canadian boreal forest, Atmospheric Environment, 33, 7, pp. 1141-1150, (1999)
  • [3] Stocker T F, Qin D, Plattner G K, Et al., Climate change 2013: the physical science basis, pp. 507-509, (2013)
  • [4] Liu Y C, Whitman W B., Metabolic, phylogenetic, and ecological diversity of the methanogenic archaea, Annals of the New York Academy of Sciences, 1125, 1, pp. 171-189, (2008)
  • [5] Zou J W, Huang Y, Zheng X H, Et al., Quantifying direct N<sub>2</sub>O emissions in paddy fields during rice growing season in mainland China: dependence on water regime, Atmospheric Environment, 41, 37, pp. 8030-8042, (2007)
  • [6] Van Nguyen N, Ferrero A., Meeting the challenges of global rice production, Paddy Water Environ, 4, 1, pp. 1-9, (2006)
  • [7] Wu J M, Ji X H, Peng H, Et al., Effects of different organic fertilizers on greenhouse gas emissions and yield in paddy soils, Transactions of the Chinese Society of Agricultural Engineering, 34, 4, pp. 162-169, (2018)
  • [8] Liu S W, Qin Y M, Zou J W, Et al., Effects of water regime during rice-growing season on annual direct N<sub>2</sub>O emission in a paddy rice-winter wheat rotation system in southeast China, Science of the Total Environment, 408, pp. 906-913, (2010)
  • [9] Jiang C S, Wang Y S, Zheng X H, Et al., Effects of tillage-cropping systems on methane and nitrous oxide emissions from permanently flooded rice fields in a Central Sichuan Hilly Area of Southwest China, Environmental Science, 27, 2, pp. 207-213, (2006)
  • [10] Weller S, Janz B, Jorg L, Et al., Greenhouse gas emissions and global warming potential of traditional and diversified tropical rice rotation systems, Global Change Biology, 22, 1, pp. 432-448, (2016)
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