文章基本信息

标题：Condutividade hidráulica efetiva e sua relação com os demais atributos dos solos do Cerrado
其他标题：Effective hydraulic conductivity and its relationship with the other attributes of Cerrado soils
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作者：Bocuti, Edwaldo D. ; Amorim, Ricardo S. S. ; Raimo, Luis A. Di L. Di 等
期刊名称：Revista Brasileira de Engenharia Agrícola e Ambiental
印刷版ISSN：1415-4366
电子版ISSN：1807-1929
出版年度：2020
卷号：24
期号：6
页码：357-363
DOI：10.1590/1807-1929/agriambi.v24n6p357-363
出版社：Departamento de Engenharia Agrícola - UFCG / Cnpq
摘要：The objective of this study was to determine the effective hydraulic conductivity of six areas located in the Cerrado region of Mato Grosso, Brazil, and to identify physical attributes of soils with potential for predicting effective hydraulic conductivity. The tests to determine the effective hydraulic conductivity were carried out in six areas, covering the textural classes sand, sandy loam and clay, and the following uses: pasture, Cerrado and agriculture. Particle size, sand fractionation, total carbon content, degree of clay flocculation, bulk density, macroporosity, microporosity, mean weight diameter, mean geometric diameter and aggregate stability index were determined. From the data, statistical analyses of contrasts were performed by the Kruskal - Wallis test, and simple Pearson’s correlation coefficient was determined between variables. The average values of effective hydraulic conductivity for the pasture, agriculture and Cerrado areas were 95.73, 27.83 and 48.31 mm h-1, respectively. Higher value of effective hydraulic conductivity was observed in the Pasture area point 2 when compared to the Agriculture area point 2, because the amount of clay determined in Agriculture area was approximately 16 times greater than that of the area Pasture point 2, conditioning lower water infiltration in the soil profile of the area Agriculture point 2. Among the physical attributes analyzed, those with the highest potential for Ke prediction were: clay, silt, sand (coarse, medium and fine), total carbon and aggregate stability index.
关键词：chuva simulada;perda de solo;taxa de infiltração da água
其他关键词：simulated rainfall;soil loss;water infiltration rate