土壤中发生的挥发性有机硫气体的研究

测定了张北、封丘、鹰潭、吴县、长沙、湛江等地旱地土壤和水稻土在室内培养情况下挥性有机硫气体的释放。结果表明，这些土壤中产生硫化氢、氧硫化碳、甲基硫醇、二甲基硫、二硫化碳和二甲基二硫等含硫气体。水稻土中产生的有机硫气体高于旱地土壤，同时施用有机肥和化肥后，土壤中发生的有机硫气体高于仅施用化肥，在厌氧条件下检测到的有机硫气体高旱地土壤、同时施用有机肥和化肥后，土壤中发赡有机硫气体高于仅施用化肥。在厌氧

VOLATILE BIOGENIC SULFUR GASES EMITTED FROM CHINESE SOILS

Emission of volatile biogenic sulfur gases from waterlogged paddy and upland soils in China was studied in the laboratory. Emission of hydrogen sulfide H 2S, carbonyl sulfide (COS), methyl mercaptan CH 3SH, dimethyl sulfide (DMS), carbon disulfide CS 2 and dimethyl sulfide (DMDS) were detected. Emission of sulfur gases from paddy soil was more than that from upland. The emission was elevated with application of both organic manure and chemical fertilizer compared to that with only chemical fertilizer applied. On anaerobic condition, detected sulfur gases were much more than that under an aerobic condition. At higher temperature, the emission and diminished rates of resucable sulfur gases were higher than those at lower temperature.