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首页> 外文期刊>International journal of soil science >Gypsum and Water Level Effects on Central Rift Valley Sodic Soils of Ethiopia
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Gypsum and Water Level Effects on Central Rift Valley Sodic Soils of Ethiopia

机译：埃塞俄比亚中央裂谷肥皂土壤的石膏和水平影响

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Background and Objective: There are vast areas of Sodic soils in the world. In Ethiopia, many of the low lands are affected by sodicity and need reclamation for better agricultural productivity. The efficiency of two amendments in reclaiming sodic soil using gypsum and water for better agricultural productivity was investigated. Sodic soils of Adami Tullu Kombolcha were used for the study. Materials and Methods: Gypsum and the different levels of water were applied to packed sandy clay loam soil columns. Gypsum was mixed with topsoil before leaching at application rates of 0, 50, 100 and 150% of the Gypsum Requirement (GR), whereas 1, 2, 3 and 4 Pore Volume (PV) of water were also used to leach the sodium in the soil. Results: Gypsum and water application reduce sodium to an acceptable range for plat production. Exchangeable sodium percentage was reduced by 66.8 and 53.38% for the highest rate of application of water and gypsum respectively. Results indicated that during cation exchange reactions most of the sodium was removed. Conclusion: Both amendments efficiently reduced soil salinity and sodicity. Gypsum at 150% of the GR can be used as an efficient amendment and leaching with 2 PV of water could be recommended to reclaim the studied soil.
机译：背景和目的：世界上有大量的培养土壤。在埃塞俄比亚，许多低地都受到善良的影响，需要填海，以便更好地农业生产力。调查了使用石膏和水以获得更好的农业生产力的再生钠土的两项修正案的效率。 Adami Tullu Kombolcha的钠土被用于研究。材料和方法：石膏和不同水平的水被应用于包装的砂质粘土壤土土柱。在涂抹于0,50,100和150％的石膏要求（GR）的施用速率之前，石膏与TOOPSOIL混合，而1,2,3和4孔体积（PV）也用于浸入钠土壤。结果：石膏和水应用将钠还原为适用于平台生产的可接受范围。可交换钠百分比分别降低66.8％和53.38％，分别为水和石膏的最高速率。结果表明，在阳离子交换期间，除去大部分钠。结论：两种修正案都有效地降低了土壤盐度和素质。 150％的Gypsum可以用作有效的修正案，并建议用2级水进行浸出，以回收研究的土壤。

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