Position: Home > Articles > N_2O and CH_4 emission from Japan rice fields under different long-term fertilization patterns and its environmental impact
Chinese Journal of Applied Ecology
2010,21
(12)
3200-3206
日本长期不同施肥稻田N_2O和CH_4排放特征及其环境影响
作 者：
罗良国;近藤始彦;伊藤纯雄
单 位：
中国农业科学院农业环境与可持续发展研究所农业部农业环境与气候变化重点实验室;日本国立农业研究中心土壤肥料部
关键词：
长期施肥管理;水稻;温室气体排放;静态箱法
摘 要：
观测了75年长期连续不施肥、施硫酸铵、施熟制水稻秸秆与豆饼混合堆肥、施绿肥苜蓿4种处理下日本单季稻田温室气体N2O和CH4的排放特征及其环境影响.结果表明:在水稻生长季节,不同处理间N2O排放无显著差异,但CH4排放差异显著;长期连续施用有机肥虽然没有增加N2O排放却促进了CH4排放.各系统排放N2O和CH4所产生的累积全球增温潜势(GWP)以绿肥处理最大(310.7gCO2e·m-2),熟制有机堆肥次之(151gCO2e·m-2),硫酸铵处理最小(60.6gCO2e·m-2).稻田系统的GWP主要来自CH4排放,控制和减少稻田系统CH4排放是稻田温室气体减排的核心问题.长期连续施用熟制有机堆肥既能增加土壤有机质,改善地力,满足水稻高产,又能实现CH4减排,是实践中值得推荐的水稻生产模式.
译 名：
N_2O and CH_4 emission from Japan rice fields under different long-term fertilization patterns and its environmental impact
作 者：
LUO Liang-guo1,KONDO Motohiko2,ITOH Sumio2 ( 1Ministry of Agriculture Key Laboratory for Agro-Environment & Climate Change,Institute of Agricultural Environment & Sustainable Development,Chinese Academy of Agricultural Sciences,Beijing 100081,China; 2Department of Soils and Fertilizers,Japan National Agricultural Research Centre,3-1-1 Kannondai,Tsukuba,Ibaraki 305-8666,Japan)
关键词：
long-term fertilization management; rice; greenhouse gases emission; closed-chamber method.
摘 要：
This study intended to investigate the greenhouse gases emission from Japan single cropping paddy fields after 75-year continuous application of ammonium sulfate,composted rice straw with soybean cake,and fresh clover,as well as the environmental impact of the emission. During this long period,field management remained constant in terms of rice cultivation density,irrigation, and equivalent net N fertilization. No significant differences were observed in N2O emission among the fertilization treatments,but the CH4 emission differed significantly between organic amendment and ammonium sulfate application,indicating that long-term organic fertilization didn’t increase N2O emission but promoted CH4 emission. The cumulative global warming potential ( GWP) of the CH4 and N2O from the paddy ecosystem was the greatest ( 310. 7 g CO2e·m -2) under fresh clover application,followed by composted rice straw plus soybean cake addition ( 151 g CO2e·m -2) , and the least ( 60. 6 g CO2e·m -2) under ammonium sulfate application. This study showed that for paddy system,it was CH4 instead of N2O the major factor affecting global warming,and there- by,to control and reduce the CH4 emission from paddy system would be the core in mitigating greenhouse gases emission from paddy field. Long-term consecutive application of composted rice straw plus soybean cake could increase soil organic matter,improve soil fertility,promote rice high-yielding,and as well,mitigate CH4 emission,being the recommendable paddy rice production mode in practice.
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日本长期不同施肥稻田N2O和CH4排放特征及其环境影响 [罗良国, 近藤始彦, 伊藤纯雄] 应用生态学报 2010,21 (12) 3200-3206
