南方农业学报2025，Vol.56Issue(1)：204-213,10.DOI:10.3969/j.issn.2095-1191.2025.01.018
不同水稻品种对重庆地区稻田温室气体排放的影响
Effects of different rice varieties on greenhouse gas emissions from paddy fields in Chongqing
摘要
Abstract
[Objective]To explore the effects of different rice varieties on greenhouse gas emissions in paddy fields,which could screen out high-yielding rice varieties with low greenhouse gas emissions suitable for cultivation in Chong-qing.[Method]Through field experiments,the fluxes of methane(CH4)and nitrous oxide(N2O)from 6 major rice varie-ties(Zhongzheyou H7,Yuliangyouhuazhan,Q Xiangyou 352,Shennongyou 446,Yuxiangyou 8133 and Yuxiang 203)in Chongqing were continuously monitored using the static chamber-gas chromatography method.The rice yields were measured at harvest,and the global warming potential and greenhouse gas emission intensity of each variety were com-pared.[Result]Among the 6 rice varieties,only Zhongzheyou H7 showed a bimodal trend in CH4 flux,with peaks occur-ring during the heading stage-filling stage and the maturity stage-harvest stage.The CH4 fluxes of the other 5 varieties showed an unimodal trend,with peaks occurring during the heading stage-filling stage.The total CH4 emissions of diffe-rent varieties ranged from 175.77 to 274.10 kg/ha.Among them,Q Xiangyou 352 had the lowest total CH4 emission,while Yuxiangyou 8133 had the highest,and there was significant difference between the two(P<0.05,the same below).The obvious emission peak of N2O occurred after the paddy field was drained,with total emission ranging from-0.100 to 0.464 kg/ha.There was no significant difference in the total N2O emission among the varieties(P>0.05),and the total N2O emission of Yuxiangyou 8133 was negative.The rice yields of different varieties ranged from 4.94 to 8.20 t/ha.Among them,Q Xiangyou 352 had the highest yield,while Yuliangyouhuazhan had the lowest yield,and there was sig-nificant difference between the two.The global warming potential analysis showed that Zhongzheyou H7 had the highest global warming potential,reaching 7.67 t CO2e/ha,while Q Xiangyou 352 had the lowest global warming potential,at 4.98 t CO2e/ha.The greenhouse gas emission intensity of different rice varieties ranged from 0.61 to 1.54 t CO2e/t.Among them,Q Xiangyou 352 had the lowest greenhouse gas emission intensity,which was significantly lower than that of other varieties,while Zhongzheyou H7 had the highest greenhouse gas emission intensity.[Conclusion]Considering both yield and greenhouse gas emission,Q Xiangyou 352 has the highest yield and the lowest CH4 emission and greenhouse gas emission intensity,and it is suitable for promotion in Chongqing and regions with similar conditions.关键词
水稻品种/甲烷/氧化亚氮/温室气体排放/水稻产量/重庆地区Key words
rice variety/methane/nitrous oxide/greenhouse gas emissions/rice yield/Chongqing region分类
农业科技引用本文复制引用
范茂,杨学亭,张健,刘倩,赵正武,廖敦秀,杭晓宁..不同水稻品种对重庆地区稻田温室气体排放的影响[J].南方农业学报,2025,56(1):204-213,10.基金项目
重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX1333) （CSTB2022NSCQ-MSX1333）
重庆市技术创新与应用发展专项面上项目(CSTB2022TIAD-GPX0012) （CSTB2022TIAD-GPX0012）
重庆市科研机构绩效激励引导专项(cstc2022jxjl80003) （cstc2022jxjl80003）
重庆市研究生联合培养基地建设项目(渝教研发2023008) General Project of Chongqing Natural Science Foundation(CSTB2022NSCQ-MSX1333) （渝教研发2023008）
Gene-ral Project of Chongqing Technology Innovation and Application Development Special Project(CSTB2022TIAD-GPX0012) （CSTB2022TIAD-GPX0012）
Chongqing Research Institution Performance Incentive and Guidance Project(cstc2022jxjl80003) （cstc2022jxjl80003）
Chongqing Graduate Joint Training Base Construction Project(Yujiaoyanfa 2023008) （Yujiaoyanfa 2023008）
