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題 名 | 石灰-有機質肥料-化學磷肥的交感作用對強酸性土壤磷有效性的影響=The Phosphorus Availability in Acid Soils Affected by the Interactions of Lime-Organic Fertilizer-Chemical Phosphate Fertilizer |
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作 者 | 陳仁炫; 歐毓美; | 書刊名 | 中華農學會報 |
卷 期 | 175 1996.09[民85.09] |
頁 次 | 頁1-20 |
分類號 | 434.223 |
關鍵詞 | 石灰; 有機質肥料; 磷有效性; 交感作用; Lime; Organic fertilizer; P availability; Interaction; |
語 文 | 中文(Chinese) |
中文摘要 | 酸性土壤已知對無機磷和有機磷具強烈的吸附能力,唯強酸性土壤對有機磷和無機磷吸附的能力,可能因土壤本身性質及土壤管理方式不同而顯現不同的效果。在強酸性土壤施用有機質、石灰及化學磷肥以改良土壤及增進地力時,有機磷與無機磷之間的轉換及兩者對土壤磷有效性的影響將更形複雜而有待探討。本實驗的目的即探討石灰-有機質-化學磷肥交互作用對強酸性土壤磷有效性的影響,並利用Barber-Cushman養分吸收模式評估其效應,以尋找增進強酸性土壤磷有效性的較佳磷肥管理方式。 本試驗選取性質迥異的二種強酸性土壤(中寮和關西),分別以施石灰,有機肥料[牛糞堆肥,和Inositol hexaphosphate (IHP)],及KH₂PO₄三者之施用與否的2×3×2的組合方式予以處理,以評估各處理對土壤磷有效性的影響效應。 試驗結果顯示化學磷肥和有機質肥料的添加均會增加強酸性土壤中溶液磷和陰離子交換樹脂磷的濃度,唯石灰施用所產生的效應則受土壤本身交換性鋁或鋁飽和度高低的影響。同時,牛糞堆肥的施用對土壤磷有效增進的效果較IHP處理高。 藉由磷有效性和土壤pH的提昇效應之評估結果,顯示石灰,有機質肥料和化學磷肥的配合施用為提昇本省強酸性土壤磷有效性的最佳土壤管理方式。若為節約起見,對磷吸附能力不強的土壤而言,以石灰配合有機質肥料的使用亦為可行之策。 |
英文摘要 | The strong phosphorus (P) fixing capacity of acid soils was believed to be the reason of their low P availabilities. Liming, or organic fertilizer, and/or chemical P fertilizer addition was suggested to improve the P availability of acid soil. However, the capacities may be affected by the characteristics of soils and the methods of management. P transformation and P availability in the soils will be more complicate of when organic matter, lime, and chemical P fertilizer are used in strongly acid soils, and that needed to be investigated. The objectives of this research were to study the effect of the interactions of lime-organic fertilizer-chemical P fertilizer on the P availabilities of strongly acid soils. Two strongly acid soils (Kuan-Si and Chun-Liao) were selected to study the combined effects of lime, organic fertilizer, and KH₂PO₄ on the availability and transformation of P in the soils. Results showed that the concentration of solution P and resin exchangeable P were increased by the use of chemical P fertilizer and organic fertilizers. However, the effect of liming on P availability was related to the contents of exchangeable Al or Al saturation of soils. In addition, cattle compost had a better capacity in increasing soil P availability than IHP. Results also indicated that the combined addition of lime, organic matter, and chemical P fertilizer was the best management practice in promoting the P availability of strongly acid soils in Taiwan. |
本系統中英文摘要資訊取自各篇刊載內容。