中国水稻科学

中国水稻科学

• 研究报告 • 上一篇    下一篇

灌溉与绿肥对稻田土壤甲烷释放能力的影响

陈 苇;郭望模;卢婉芳;段彬伍   

  1. 中国水稻研究所，杭州 310006
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1997-01-10 发布日期:1997-01-10

Effect of Irrigation and Green Manure Application on the Ability of Methane Release in the Paddy Soil

Chen Wei; Guo Wanmo; Lu Wanfang; Duan Binwu   

  • Received:1900-01-01 Revised:1900-01-01 Online:1997-01-10 Published:1997-01-10

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被引次数

20

摘要： 通过稻田控水可迅速提高土壤Eh值，由-206 mV升至+38 mV，土壤水溶解甲烷含量由平均5.54降至0.25 μg/mL，而且复水后甲烷含量上升极其缓慢。在持续淹灌条件下溶解甲烷含量一直处于较高水平，其峰值达到12.12 μg/mL。稻田耕层各层次进行比较，土壤溶解甲烷含量随深度增加而逐渐上升，土壤0、 5、 10和15 cm的甲烷平均含量分别为1.11、 3.38、 4.53和6.00 μg/mL。

关键词: 绿肥, 灌溉, 稻田, 溶解甲烷, 温度

Abstract: The experiment with different irrigation and green manure application was carried out in 1995. The Eh value was raised from - 206 mV to +38 mV by means of water control in the rice field. That resulted in decrease of the soluble methane content in soil water from 5. 54 to 0. 25 μg/mL. After flooding methane content increased very slowly. Under the condition of continuously irrigation, the soluble methane content maintained a high level, upto 12. 12 μg/mL. The soluble methane contents were higher at the lower part of the farming layers. At the depths of 0, 5, 10, 15 cm, the average contents of the soil methane were 1. 11, 3. 38, 4. 53 and 6. 00μg/mL, respectively.

Key words: green manure, irrigation, paddy field, soluble methane, temperature