Efectos de la contracción linear sobre las características físicas de un suelo franco de sabana
It is generally accepted that kaolinite clay soil does not shrink. The Venezuelan Monagas states sandy loam soil of savanna having kaolinite clay, that increases with depth, shrinks enough, that from an agricultural point of view produces various effects on soil physical parameters and root adverse...
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| 格式: | article |
| 語言: | spa |
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2017
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| 在線閱讀: | https://revistasespam.espam.edu.ec/index.php/Revista_ESPAMCIENCIA/article/view/168 |
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添加標簽 | 總結: | It is generally accepted that kaolinite clay soil does not shrink. The Venezuelan Monagas states sandy loam soil of savanna having kaolinite clay, that increases with depth, shrinks enough, that from an agricultural point of view produces various effects on soil physical parameters and root adverse soil conditions. The general objective was to determine the linear shrinkage at ambient periods of drying in four soil horizons of a loam savanna soil and its consolidation effects. Methodologically a linear semi-cylindrical mold for soil shrinkage data attainment was used; and, randomized experimental design simple factorial (7*7*4) block method, regression variance analysis, the least significant difference (LSD), multiple regressions, all-pairwise comparisons test and response surface were used for statistical analysis. The results showed that linear shrinkage increased from drying periods and soil depth; the maximum soil desiccation occurred between 48 and 60 h drying periods; the wet densities did not vary significantly from drying periods, nevertheless evidently for soil horizons. Soil drying, shrinkage and consolidation, resulted the same soil processes. These soils completely consolidate at around 48 h after a good wetting causing flocculation; indicating, requirement of irrigation every two or three days. |
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