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Review of sodic soil Reclamation with a Snapshot of Current Research Activity

Chinese Geographical Science 2022年第6期32卷 1099-1109页

作者： TÓTH Tibor Institute for soil Sciences Centre for Agricultural ResearchBudapest 1022Hungary

For centuries, reclamation of sodic soils has been an essential part of cropping practices in several parts of the world. Parallel to increasing population, the need for new cropland constantly re-evaluates land suitability concepts. Therefore, the importance of sodic soils as potential croplands is increasing worldwide. Although theoretically farmers can choose from a wide variety of reclamation options, according to profitability, business plans, and human and financial resources, in practice, few reclamation methods are applied at large scale. This article touches on the early history, 20th Century intensive research, and current trends of sodic soil reclamation. New approaches such as leaching, chemical amendments, addition of organic material, and biological and microbial improvements are discussed, and also brand-new approaches are reviewed. The early history is reviewed using historical books, the achievements of the last hundred years using basic technical literature, mostly books, and the current approaches of our time with fresh publications, mostly papers and two very recent conferences published in English.

关键词： gypsuming liming chemical reclamation new technology sodic soil

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Genesis and Behavior of sodic soils in Humid Climates

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Agricultural Sciences 2022年第2期13卷 150-164页

作者： Michael Aide Department of Agriculture Southeast Missouri State University Cape Girardeau Missouri USA

sodic soils are typically located in semi-arid to arid climates. However, sodic soils in continental humid climates are rare. As with sodic soils in dry climates, sodic soils in wetlands pose management difficulties for agriculture, forestry, or wild-life habitat. The typical practice of gypsum application is problematic given inability to provide drainage. Natraqualfs located in southeastern Missouri present an acid argillic horizon superimposed on a natric horizon, where the exchangeable sodium percentage and an alkaline reaction are characteristic attributes. Ferrolysis is an active soil process that is slowly degrading the natric horizon because of exchangeable Al3+ and H+ generation and re-stabilization of the soil structure, permitting leaching of the sodium.

关键词： sodic soil Natric Horizon Ferrolysis Weathering Aqualfs

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