土性 및 pH差異가 湛水土壤의 메탄가스 生成에 미치는 影響 = Effect on Methane Formation in Submerged Soil under Diffe-rent Soil Texture and pH

다국어 초록 (Multilingual Abstract)

The effect of soil texture and pH on the behavior of anaerobic products in submerged soils, fatty acids and methane gas were studied. The study was done under anaerobically controlled system applied rice straw as carbon source at 30℃.
1. Methane formation was higher in the loamy soil compared to that obtained with sandy loam soil, in pH 7.0 compared to pH 4.5 and rice straw treatment enhanced the methane gas for-mation remarkably.
2. The Eh values were below -350 mV since 5 days after incuabtion in the treatment of pH 7.0 with rice straw, and in this condition methane content was about 65% and carbon dioxide 35%.
3. Acetic propionic, isobutyric, butyric, lactic isovaleric and valeric acid were detected during the incubation and acetic acid was accumulated in the large quantity under the condition that methane formation was inhibited.
4. The average methane formation rate during the incubation period was ranged from 0.0003 to 16.17 g/㎡/day which were depending on soil pH, Eh and organic material.
5. The conditions for inhibition of methane formation in submerged soil were low pH, low Eh and suppression of organic matter supply.

목차 (Table of Contents)

• 緖言
• 材料 및 方法
• 結果 및 考察
• 摘要
• 引用文獻