不同濃度之矽酸鈉及磷酸銨對土壤吸附效應之影響

Different Mixed Date of Sodium Silicate and Diammonium Hydrogenphosphate on the Effect of Soil Concentrations

林俐玲(Li-Ling Lin) ； 林致君(Chih-Chun Lin) ； 董小萍(Shaw-Ping Dung)

《坡地防災學報》 2卷2期 (2003/12) Pp. 49-56

https://doi.org/10.29995/JSHR.200312.0005

摘要

本研究以矽酸鈉(Na2SiO3)及磷酸銨((NH4)2HPO4)爲添加劑，試驗材料爲於南投縣草屯鎮山坡地採樣之土壤，分別添加0%、0.1%、0.5%、1.5%四種不同濃度之Si與P於土壤中，養置六個月後，以KCl爲追蹤劑進行混合取代法測定其離子吸附能力。試驗結果顯示土樣添加矽酸鈉及磷酸銨皆使K突破曲線右移，且V/V0隨添加濃度而增加，由此可以得知矽酸根離子與磷酸根離子均可增加土壤對陽離子的吸附效應，且兩者中以磷酸根之效果較佳。

關鍵字

混合取代 ； 突破曲線

並列摘要

The study is to examine the effect of two soil amendments, namely, Sodium Silicate (Na2SiO3) and Diammonium Hydrogenphosphate ((NH4)2HPO4) on slopeland soil from Tsaotun. The soil was treated with different 0%, 0.1%, 0.5%, and 1.5% concentrations of Si and P. The treated soil samples were stored in plastic bags indoor for 6 months before subjecting them to the fertility with miscible displacement model. The results of the experiment indicated that the K breakthrough curves shifted to the right as the soil samples are treated with Na2SiO3 and (NH4)2HPO4, and V/V0 increased with increasing concentrations of Si and P. The effect of ion adsorption and CEC can be increased as soils treated Na2SiO3 and (NH4)2HPO4. (NH4)2HPO4 has the marked effect.

並列關鍵字

miscible displacement ； breakthrough curve