| Cite this article: | 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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| DOI： |
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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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