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Organic matter characteristics, biochemical activity and antioxidant capacity of soil amended with different organic materials.

机译:不同有机物质对土壤有机质特征,生化活性和抗氧化能力的影响。

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摘要

The influence of pelleted cow manure (PCM), peat, municipal solid waste compost (MSWC), wet olive husk compost (WOHC) and green waste compost (GWC) on soil biochemical activity, antioxidant capacity (trolox equivalent antioxidant capacity (TEAC)) and the level of soil organic matter was evaluated in a short-term laboratory study. Peat was the most acidifying material, followed by GWC and PCM, reflecting the acidic characteristics of the compounds present in the aqueous and alkaline extracts of the amendments. Organic materials caused a marked increase of total and water-soluble organic carbon, total N, water- and alkali-soluble phenols in soil, with values generally reflecting the amount of organic matter present in the amendments. The breakdown percentage of C added expressed as CO2-C evolution for PCM was considerably the highest (18%) and for WOHC was considerably the lowest. The water-soluble organic carbon present in the amendments and soil total N acted as controllers of the rate of decomposition of organic C in soil. The highest TEAC was in peat soil, with 583.0 mM g-1, followed by PCM soil (450.2 mM g-1), while soils treated with compost had quite similar values (about 230 mM g-1). TEAC was strictly correlated with both alkali- and water-soluble phenols and water-soluble organic carbon. The level of ATP in PCM soil at the 60th day of incubation suggests that the PCM is the most effective amendment for increasing the activity of microbial biomass in soil.
机译:粒状牛粪(PCM),泥炭,城市固体废物堆肥(MSWC),湿橄榄果皮堆肥(WOHC)和绿色废物堆肥(GWC)对土壤生化活性,抗氧化能力(trolox当量抗氧化能力(TEAC))的影响并在短期实验室研究中评估了土壤有机质的水平。泥炭是最酸化的物质,其次是GWC和PCM,反映出改性剂的水提取物和碱提取物中存在的化合物的酸性特征。有机物质导致土壤中的总和水溶性有机碳,总氮,水溶性和碱可溶性酚显着增加,其值通常反映出修正案中存在的有机物的量。 PCM中以CO 2 -C演变表示的C的分解百分率最高(18%),WOHC最低。改良剂中存在的水溶性有机碳和土壤总氮可控制土壤中有机碳的分解速率。 TEAC最高的是泥炭土壤,为583.0 mM g -1 ,其次是PCM土壤(450.2 mM g -1 ),而用堆肥处理的土壤具有相当的价值(约230 mM g -1 )。 TEAC与碱溶性酚和水溶性酚以及水溶性有机碳都严格相关。孵化第60天时PCM土壤中的ATP水平表明,PCM是增加土壤中微生物生物量活性的最有效的改良剂。

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