Differential leaching of cations and sulfate in gypsum amended soils
Differential leaching of cations and sulfate in gypsum amended soils
复制标题
石膏改良土壤中阳离子和硫酸盐的差异淋溶
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
G. J. Gascho
中科院分区：
文献类型：
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作者：
A. Alva;G. J. Gascho
摘要优质花生的高产需要在果实发育期间，套圈带土壤溶液中有足够的有效钙供应。在低钙土壤上，建议在开花初期施用石膏，以确保钙的充足有效性。土壤中石膏在淋溶条件下的反应差异很大，对花生果实发育和产量起着重要作用。通过室内淋洗土柱试验，研究了一种石膏改良剂对花生果带8 cm土层中钙、钾、镁、硫酸淋失的影响。利用了6种不同理化性质的土壤，这些土壤代表了佐治亚州主要的花生种植土壤。在石膏改良土柱中用15 cm水淋洗后，沙质-卡内基、多森、福奎和蒂夫顿土壤中钙和硫酸的淋失率分别为50%~56%和74%~77%。……的各个值
Abstract An adequate supply of available Ca in the soil solution of the pegging zone during fruit development is required for production of high yields of high quality peanuts (Arachis hypogaea L.). On low Ca soils, application of gypsum during early bloom is recommended in order to ascertain adequate availability of Ca. Reaction of gypsum in soils under leaching conditions vary considerably and play an important role in fruit development and yield of peanuts. A laboratory study was conducted in leaching soil columns to investigate the effects of one gypsum amendment on leaching of Ca, K, Mg, and SO4 to a depth of 8 cm (fruiting zone of peanut). Six soils of varying physical and chemical properties representative of major peanut growing soils in Georgia were utilized. Following leaching with 15 cm water through gypsum‐amended soil columns, 50% to 56% and 74% to 77% of applied Ca and SO4, respectively, were leached below 8 cm in the sandy‐Carnegie, Dothan, Fuquay and Tifton soils. The respective values for...