Abdelbasset Lakhdar, R. Scelza, R. Scotti, M. Rao, N. Jedidi, L. Gianfreda, C. Abdelly
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引用次数: 88
摘要
用13.3和26.6 g kg -1的城市生活垃圾(MSW)堆肥或污水污泥对盐碱地进行改良，在实验室条件下培养70 d，测定其arylsulatase (ARY)、磷酸酶(PHO)、脱氢酶(DEH)、β-葡萄糖苷酶(β-GLU)、脲酶(URE)和过氧化氢酶(CAT)的活性及其理化性质。城市生活垃圾堆肥和污水污泥显著改善了土壤的理化性质，特别是碳和氮含量。因此，两种添加物均显著提高了总体酶活性，在13.3 g kg -1的MSW堆肥中，DEH、β-GLU、PHO、URE和CAT的酶活性分别提高了107%、43%、20%、11%和148%。当污泥用量为26.6 g kg -1时，有益效果较低，可能是由于污泥的盐度增加或微量元素的存在。一般情况下，城市生活垃圾堆肥的供给量为13.3 g kg -1
THE EFFECT OF COMPOST AND SEWAGE SLUDGE ON SOIL BIOLOGIC ACTIVITIES IN SALT AFFECTED SOIL
Saline soil was amended with 13.3 and 26.6 g kg -1 of Municipal Solid Waste (MSW) compost or sewage sludge, and arylsulphatase (ARY), phosphatase (PHO), dehydrogenase (DEH), β-glucosidase (β-GLU), urease (URE) and catalase (CAT) activities as well as physical-chemical properties were determined after 70 day of incubation under laboratory conditions. MSW compost and sewage sludge significantly improved soil physical-chemical properties, especially carbon and nitrogen contents. Accordingly, overall enzyme activities were substantially promoted in presence of both amendments and the higher increases were measured at 13.3 g kg -1 of MSW compost (increases by 107%, 43%, 20%, 11%, and 148% for, DEH, β-GLU, PHO, URE, and CAT, respectively). Lower beneficial effects occurred at 26.6 g kg -1 of sewage sludge possibly because of the increased salinity or the presence of trace elements by sewage sludge application. As a general response, MSW compost supplied at 13.3 g kg -1 seems
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