| 引用本文: | 陶甄,李中阳,李松旌,等.模拟再生水、养殖废水灌溉对农田温室气体排放的影响及其差异性研究[J].灌溉排水学报,0,():-. |
| TaoZhen,LiZhongyang,LiSongjing,et al.模拟再生水、养殖废水灌溉对农田温室气体排放的影响及其差异性研究[J].灌溉排水学报,0,():-. |
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| 模拟再生水、养殖废水灌溉对农田温室气体排放的影响及其差异性研究 |
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陶甄, 李中阳, 李松旌, 李宝贵, 李嗣艺, 高峰, 刘源
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中国农业科学院农田灌溉研究所
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| 摘要: |
| 【目的】为探究不同水源灌溉对农田温室气体排放的影响,【方法】采用室内培养的方法研究再生水与养殖废水灌溉对土壤CO2、N2O、CH4排放通量的影响(以地下水灌溉为对照),同时监测土壤pH、土壤充水孔隙度(WFPS)、NH4+-N、NO3--N的变化,分析培养期间土壤CO2、N2O、CH4排放特征及相关影响因子变化。【结果】试验结果表明：与地下水相比,再生水与养殖废水灌溉均显著增加土壤CO2、N2O、CH4排放(P<0.05),再生水促进N2O排放的效果更明显,养殖废水促进CO2、CH4排放的效果更明显；从全球增温潜势(GWP)来看,与地下水相比,再生水与养殖废水均显著增加GWP,两者无显著差异；试验结束时,养殖废水处理土壤pH低于地下水对照,而再生水处理高于地下水对照；再生水与养殖废水均显著增加了土壤中无机氮含量。【结论】综合考虑GWP与土壤性质,可知在本试验条件下,再生水、养殖废水应用于农业灌溉时一定程度上增加了环境温室效应与土壤无机氮含量。 |
| 关键词: 再生水;养殖废水;灌溉;温室气体 |
| DOI： |
| 分类号:X713 |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| Effects of simulated reclaimed water and livestock wastewater irrigation on greenhouse gas emissions and their differences |
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TaoZhen, LiZhongyang, LiSongjing, LiBaogui, LiSiyi, GaoFeng, LiuYuan
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Farmland Irrigation Research Institute
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| Abstract: |
| [Objective] In order to explore the effects of different irrigation water sources on farmland greenhouse gas emissions, [Method] indoor incubation methods were used to study the effects of reclaimed water and livestock wastewater irrigation on soil CO2, N2O, and CH4 emission fluxes (with groundwater irrigation as the control). Simultaneously, the changes of soil pH, soil water-filled porosity (WFPS), NH4+-N, and NO3--N, and CO2, N2O, CH4 emission characteristics and related edaphic factors during the cultivation period were monitored. [Results] The results showed that the reclaimed water and livestock wastewater irrigation significantly promoted CO2, N2O and CH4 emissions from soil compared with groundwater (P<0.05), the promotion effect of reclaimed water was more obvious in terms of N2O emission and the promotion effect of livestock wastewater was more obvious in terms of CO2 and CH4 emission. From the perspective of global warming potential (GWP), the reclaimed water and livestock wastewater significantly promoted GWP compared with groundwater (P<0.05) but with no significant difference between reclaimed water and livestock wastewater. At the end of the incubation, the pH of the soil in the livestock wastewater treatment was significantly lower than that of the control, while the reclaimed water treatment was higher than that of the control. Both reclaimed water and livestock wastewater significantly increased the inorganic nitrogen content in the soil. [Conclusion] Considering the GWP and the properties of the soil, the application of reclaimed water and livestock wastewater to agricultural irrigation could increase the environmental greenhouse effect and the content of soil inorganic nitrogen. |
| Key words: reclaimed water; livestock wastewater; irrigation; greenhouse gas |
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