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cje ›› 2004, Vol. ›› Issue (3): 44-48.

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Effect of slow-releasing nitrogen fertilizers on CH4 and N2O emission in maize and rice fields in black earth soil

LIANG Wei, ZHANG Ying, YUE Jin, WU Jie, SHI Yi, HUANG Guohong   

  1. Key Laboratory of Terrestrial Ecological Process , Institute of Applied Ecology , Chinese Academy of Sciences , Shenyang 110016, China
  • Received:2003-04-28 Revised:2004-02-10 Online:2004-06-10

Abstract: Field experiments were conducted to investigate the influence of slow-releasing ammonium bicarbonate and slow-releasing urea on N2O and CH4 emission in maize and rice fields.The results showed that the application of slow-releasing ammonium bicarbonate and slow-releasing urea could significantly reduce N2O emission in maize field by 59.2% and by 73.3% in rice field,respectively,compared with that of urea.These two N fertilizers could also enhance the uptake of CH4 in maize fields.N2O emission in rice fields was depressed by 61% in the treatment of slow-releasing urea,whereas CH4 emission had a slightly enhancement.

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