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題名 | 施用堆肥對水田土壤中交換性與固定性銨之影響 |
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作者 | 莊作權; 鄭宏寬; 陳鴻基; | 書刊名 | 中華農學會報 |
卷期 | 169 1995.03[民84.03] |
頁次 | 頁122-133 |
分類號 | 434.227 |
關鍵詞 | 銨固定; 交換性銨; 堆肥; Ammonium fixation; Exchangeable ammonium; Manure; |
語文 | 中文(Chinese) |
中文摘要 | 銨離子與其他陽離子在土壤粘粒表面上的交換反應在土壤氮素養分的供應上是非常重要的,其不僅影響土壤溶液中銨離子的平衡濃度,同時也影響到土壤供應作物氮素的能力。 本研究在探討水田土壤施用有機堆肥對於銨離子吸附的影響,並藉由銨離子潛勢緩衝量與不穩定性銨量的變化,來解釋非交換性銨的釋放。試驗結果顯是不同堆肥處理在不同土類土壤中,其間所表現的潛勢緩衝量有相當的差異性,在洪壤中的表現要比在砂頁岩中沖積土中還要明顯。不同堆肥處理之間,豬糞堆肥在紅壤中對於銨離子的潛勢緩衝量影響性較顯著,而牛糞堆肥卻在砂頁岩沖積土中較能顯現潛勢緩衝量的特性。施用堆肥處理對於土壤中能夠釋放更多的有效銨以供應作物吸收,足見堆肥處理對於銨離子之有效性釋放有其重要性存在。 |
英文摘要 | It is important to indicate that the nitrogen supply o soil in term of exchange reaction of ammonium and other cations on the soil clay surfaces affect not only the equilibrium concentration of ammonium in the soil solution but also nitrogen nutrient uptake by crops from soil. The experiments conducted emphasize on the adsorption of ammonium on the paddy soils after application of manure. The release of non-exchangeable ammonium can be explained by the phenomenon of changes of potential buffering capacity (PBC) and labile ammonium (-△NH₄⁺). The results showed the difference of PBC of different soil groups with different treatment of manure. The effect was distinct in red soils than that in sandstone-shale alluvial soils. In all treatments, the effect of treatment of hog manure on the PBC of red soils was sinificant while the treatment of cattle manure was siificant in sandstone-shale alluvial soils. The PBC increased with application of manure into the soil. It increased the amounts of ammonium adsorbed on the non-specific sites of the soil. It indicates that the soil will release more available ammonium for crops. Consequently, it appeared e importance of manure application on the release of available ammonium. |
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