Division of Applied Life Science, Gyeongsang National University, Jinju 660701, South Korea.
Sci Total Environ. 2014 Feb 1;470-471:1307-12. doi: 10.1016/j.scitotenv.2013.10.108. Epub 2013 Nov 17.
Compost application recorded ~20% reduction in methane (CH4) emission during rice cultivation as compared to air-dried manure treatment. The objective of this study was to evaluate the dependence of methanogens on cellulolytic bacteria (CB) to produce CH4 in organic-amended rice paddy soils. The presence of more decomposable organic C in manure was probably the key factor for higher CH4 emission from manure-treated soils as compared to compost application. Manure application facilitated anaerobic CB abundance in rice paddy soils, and that in turn increased concentrations of dissolved organic C compounds like carbohydrates in soil. Soluble organic C compounds are converted into acetate and/or carbon dioxide, which act as initial energy source for methanogens. Therefore, it could be concluded that CB positively influenced methanogen activity and methanogenesis and stabilized organic substrates like compost are more rational treatment to mitigate CH4 emission from rice paddy soil than cattle manure application.
堆肥的应用在水稻种植过程中记录到甲烷（CH4）排放量减少了约 20%，而与风干的粪肥处理相比。本研究的目的是评估产甲烷菌对纤维素分解菌（CB）的依赖性，以在有机肥料添加的水稻田中产生 CH4。与堆肥应用相比，粪肥处理土壤中 CH4 排放量较高，可能是因为粪肥中存在更多可分解的有机 C。粪肥的应用促进了水稻田厌氧 CB 的丰度，进而增加了土壤中溶解有机 C 化合物（如碳水化合物）的浓度。可溶性有机 C 化合物被转化为乙酸盐和/或二氧化碳，作为产甲烷菌的初始能源。因此，可以得出结论，CB 对产甲烷菌活性和甲烷生成有积极影响，而稳定的有机基质（如堆肥）是比牛粪应用更合理的处理方式，可以减轻水稻田 CH4 的排放。
