老埤系紅壤添加牡蠣殼粉後之土壤特性探討

Research on the Soil Characteristics of Laopi Laterite After Adding Oyster Shell Powder

張育維(Chang Yu-wei)

指導教授 ： 唐琦

國立屏東科技大學/工學院/水土保持系所/碩士(2020年)

https://doi.org/10.6346/NPUST202100455

摘要

本研究針對屏東縣內埔鄉老埤系紅壤，添加8種不同重量百分率之牡蠣殼粉(CaCO3)，藉以改善紅壤抗沖蝕性與凝聚力強度，並代替石灰作為土壤改良劑，減少農業廢棄物，達到環境永續。經本研究試驗結果顯示在第28天的牡蠣殼粉(CaCO3)拌合紅壤且考慮其有壓沉陷0.8mm下，配合山中式硬度計進行硬度測定及抗沖蝕性直剪試驗的土壤凝聚力強度的變化，經轉換而得知，當齡期於28天時，牡蠣殼粉添加量為0.5%可使土壤凝聚力強度達到7.62kgf/cm2，為該處理下之最高值。並依牡蠣殼粉(CaCO3)的添加比例增加時，其抗沖蝕性在直剪試驗下凝聚力的強度隨之增加。本文試驗結果顯示紅壤添加牡蠣殼粉有助於抗沖蝕性提升及紅壤凝聚力強度增加，並有助於農業在微型載重下的交通運輸需求。

關鍵字

牡蠣殼粉 ； 抗沖蝕性 ； 紅壤

並列摘要

This study is aimed at the old red soil of Neipu Township, Pingtung County, adding 8 different weight percentages of oyster shell powder (CaCO3) to improve the erosion resistance and cohesive strength of the red soil, and replace lime as a soil amendment to reduce agricultural waste. To achieve environmental sustainability. The test results of this research show that the soil cohesion strength of oyster shell powder (CaCO3) mixed with red soil on the 28th day and considering its compressive subsidence of 0.8mm, with the mountain hardness tester for hardness measurement and erosion resistance direct shear test The change, after conversion, knows that when the age is 28 days, the addition of 0.5% oyster shell powder can make the soil cohesive strength reach 7.62kgf/cm2, which is the highest value under this treatment. And when the addition ratio of oyster shell powder (CaCO3) increases, its erosion resistance will increase in cohesive strength under the direct shear test. The test results in this paper show that the addition of oyster shell powder to red soil can improve the erosion resistance and cohesive strength of red soil, and contribute to the transportation needs of agriculture under micro-loads

並列關鍵字

Oyster shell powder ； Erosion resistance ； Laterite .

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