Effect of Biogas Digested Liquid on CH_4 and N_2O Flux in Paddy Ecosystem

查看全文 作　　者：Ankit [1]Singla;Kazuyuki [1]Inubushi

机构地区：[1]Bioresource Science, Graduate School of Horticulture, Chiba University

出　　处：《Journal of Integrative Agriculture》索引2014年第13卷第3期,共6页

摘　　要：Biogas production generates digested slurry as a byproduct. It can be used as a fertilizer especially after its conversion into digested liquid. A pot based study was conducted in order to evaluate the effect of the application of digested liquid on CH 4 and N 2 O flux, and plant biomass in paddy. Analysis revealed that digested liquid treated soils released more CH 4 compared to ammonium sulphate and the control. Ammonium sulphate treated soil emitted the highest N 2 O whereas digested liquid application decreased its emission significantly. Further, the cumulative emission over 101 d of the experiment was found to be higher for CH 4(16.9 to 29.9 g m-2) compared to N 2 O(-49.3 to 18.9 mg m-2) for all treatments. Digested liquid application had positive impact on plant variables such as panicle number and weight of panicles. This study suggests that digested liquid application significantly decrease N 2 O emission and increase CH 4 emission possibly due to affecting the availability of organic C in the soil to microbial activity for methanogenesis. Another possibility for enhancing CH 4 emission by following biogas digested liquid could be attributed to the increase in plant biomass. 关键词：N2O通量稻田生态系统消化植物生物量液体处理 CH4排放气液土壤释放

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Effect of Biogas Digested Liquid on CH_4 and N_2O Flux in Paddy Ecosystem

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