- 期刊
流體化床蒸氣發電裝置之副產石灰改良酸性土壤
Reclamatin of Acid Soils by the Amendment of CFB Byproduct Lime
摘要
本文主要探討CFB (Circulation Fluidized-Bed Steam Generator；GFB Boiler)副產石灰對於紅壤的改良效應。以南投名間大埔美系紅壤為試驗材料，供試紅壤分別添加五種不同量(0、18、27、36及45公噸/公頃)的CFB副產石灰，各四重複放置於孵育箱中，將孵育環境控制在1/3 bars田間容水量及25˚C下，為期六個月(2002年6月10日~12月10日)，期間取出風乾、過篩，測定每種處理之pH，交換性鈣、鎂、鉀、鈉及鋁之濃度變化。結果顯示：孵育箱中測定pH變化，開始日為6月10日。供試紅壤分別添加四種鎮同量(18、27、36及45公噸/公頃)的CFB副產石灰，其pH分別為7.5、8.1、8.4及8.6，經過六個月，12月10日pH分別為6.5、7.2、7.6及7.9皆有明顯降低；經過各種處理後土壤中交換性陽離子濃度增加，且交換性鋁離子濃度降低，其原因應為副產石灰中大量CaO中和H+，提高土壤pH，且副產石灰中含有陽離子可增加土壤中營養監，增加pH後鋁溶解度會降低。
並列摘要
The purpose of this study was to examine the effect of CFB (Circulation Fluidized-Bed Steam Generator; CFB Boiler) byproduct lime as an amending material for red soil taken from Tapumei Series. From the experimental results, the following facts can be observed: Reclamation of acid soils by the amendment of CFB byproduct lime.Different amendments (18t, 27 t, 36 t and 45 t CFB byproduct lime) were mixed with 1 ha test soil.The CFB byproduct lime was capable of raising the base saturation of the test soil. Blank treatment and each treatment soil pH (original pH) 4.8、7.5、8.1、8.4and 8.6.Then were incubated at 25˚C for 180 days. The soil pH decreased to 4.3,6.5,7.2, 7.6 and 7.9.The soil pH increased proportionate to the amount of CFB byproduct lime added.Calcium、Magnesium and Potassium ion contents increased more the amount of CFB byproduct lime added.Having added the CFB byproduct lime,we chose Tapumei Series red soil for available aluminum analysis.After adding different proportions of CFB byproduct lime into the soil, the exchangeable aluminum in the test soil decreased proportionate to the increases in CFB byproduct lime.