修正案
肥料
有机质
植物毒性
生物量(生态学)
成熟度(心理)
化学
溶解有机碳
堆肥
总有机碳
农学
环境化学
动物科学
生物
心理学
发展心理学
有机化学
政治学
法学
作者
María Gómez‐Brandón,Cristina Lazcano,Jorge Domínguez
出处
期刊:Chemosphere
[Elsevier]
日期:2008-01-01
卷期号:70 (3): 436-444
被引量:228
标识
DOI:10.1016/j.chemosphere.2007.06.065
摘要
We examined chemical, microbiological and biochemical parameters in order to assess their effectiveness as stability and maturity indicators during the composting process of cattle manure. The composting material obtained after 15 d in trenches and at different times during the maturation phase (i.e. 80, 180 and 270 d) were analyzed. We found that the material collected at the end of the active phase was inadequate to be applied to soil as organic amendment due to its high content of NH4+, its high level of phytotoxicity and the low degree of organic matter stability. After a maturation period of 80 d, the stability of the sample increased. This was shown by a reduction in the dissolved organic carbon (DOC) content and NH4+ concentration and also by a reduction in the microbial activity and biomass; however, 180 d of composting were not sufficient to reduce the phytotoxicity to levels consistent for a safe soil application. Among the various parameters studied, the change in DOC with composting time gave a good indication of stability.
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