文章基本信息

标题：QUALIDADE FÍSICA DE UM SOLO DEGRADADO EM RECUPERAÇÃO HÁ 6 ANOS
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作者：Marlene Cristina Alves ; Edgar Bortoli dos Santos ; Ricardo Antônio Ferreira Rodrigues 等
期刊名称：Holos Environment
印刷版ISSN：1519-8634
出版年度：2011
卷号：11
期号：2
页码：158-169
语种：Portuguese
出版社：Centro de Estudos Ambientais - UNESP/Rio Claro
摘要：The sludge is a compound capable of agricultural use, a source of nutrients for crops and soil conditioner. In this sense, has developed a work which objective on studying the influence of reapplication of biosolids in the recovery of physical properties of soil in a degraded Oxisol. The work was conducted five months after the biosolids re-application in a recovery area cultivated for six years under eucalyptus and pasture. The experimental design was randomized blocks with six treatments and four replications, with: Soil under eucalyptus and pasture with no added inputs, soil under eucalyptus and pasture with mineral fertilization, soil under eucalyptus and pasture with re-application of 4.64 mg ha-1 (on dry basis) of sludge, soil under eucalyptus and pasture with re-application of 9.28 mg ha-1 (on dry basis) of sludge, soil exposed (without any cultivation or fertilization), soil with Savannah vegetation. Was studied in soil layers of 0.00-0.05, 0.05-0.10, 0.10-0.20 and 0.20-0.40 m, the physical attributes: macroporosity, microporosity; porosity and soil bulk density. It was found that reapplication of the sludge is regaining ground in relation to physical properties, especially in the surface layers.
其他摘要：The sludge is a compound capable of agricultural use, a source of nutrients for crops and soil conditioner. In this sense, has developed a work which objective on studying the influence of reapplication of biosolids in the recovery of physical properties of soil in a degraded Oxisol. The work was conducted five months after the biosolids re-application in a recovery area cultivated for six years under eucalyptus and pasture. The experimental design was randomized blocks with six treatments and four replications, with: Soil under eucalyptus and pasture with no added inputs, soil under eucalyptus and pasture with mineral fertilization, soil under eucalyptus and pasture with re-application of 4.64 mg ha-1 (on dry basis) of sludge, soil under eucalyptus and pasture with re-application of 9.28 mg ha-1 (on dry basis) of sludge, soil exposed (without any cultivation or fertilization), soil with Savannah vegetation. Was studied in soil layers of 0.00-0.05, 0.05-0.10, 0.10-0.20 and 0.20-0.40 m, the physical attributes: macroporosity, microporosity; porosity and soil bulk density. It was found that reapplication of the sludge is regaining ground in relation to physical properties, especially in the surface layers.
关键词：Soil degradation;Sewage sludge;Soil physics properties;Soil conditioner;Degradação do solo;Lodo de esgoto;Propriedades físicas do solo;Condicionador de solo
其他关键词：Soil degradation; Sewage sludge; Soil physics properties; Soil conditioner