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題 名 | Feasibility of Lime Cake from the Steel Mill as Acidic Soil Conditioner in the Sugarcane Field |
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作 者 | 劉文徹; 李松伍; 張翊袖; 姚財寶; 張仁義; | 書刊名 | Taiwan Sugar |
卷 期 | 45:5 民87.09-10 |
頁 次 | 頁10-15 |
分類號 | 434.717 |
關鍵詞 | 石灰使用; 石灰泥餅; 酸性土壤; 甘蔗; 重金屬; 土壤改良劑; Liming; Lime cake; Acidic soil; Sugarcane; Soil conditioner; Heavy metal; |
語 文 | 英文(English) |
英文摘要 | Lime cake is a by-product of steel mills. To maximize the use of resources, the utilization of lime cake on the sugarcane land as an acidic soil conditioner was studied. Lime cake contained 48% of CaO, 1.2% of MgO, 0.37% of Fe, and minor amounts of heavy metals such as Mn, Cr, Zn, Cd, Pb, Ni, and Cu. Chemical analysis showed that the leaching quantities of heavy metals from the lime cake were low. Application of the lime cake to the acidic sandstoneshale alluvial soil could rise the soil pH and increase the cation exchange capacity, which led to an increase in the nutrient uptake by the sugarcane. Accordingly, the average height of sugarcane, the number of effective stool, and fresh weight of sugarcane per hectare thus increased; the yields of cane and sugar from fields on which lime cake was applied increased by 25% compared with the check. Soil analyses showed that the lime cake amendment did not significantly increase the total and available quantities of soil heavy metals nor cause toxicity in soils. The analysis of sugarcane tissue indicated that no adverse effects occurred in the sugar quantity when the lime cake was applied. Lime cake could be used as an agricultural liming material. |
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