Effects of different soil fertilizations on NH3 volatilization of urea
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DOI：10.7606/j.issn.1000-7601.2005.02.16
Key Words: soil fertility  NH3 volatilization  urea
Author NameAffiliation
DONG Wen-xu Institute of Agriculture Modernization，Chinese Academy of Science，Shijiazhuang 050021，China 
HU Chun-sheng Institute of Agriculture Modernization，Chinese Academy of Science，Shijiazhuang 050021，China 
ZHANG Yu-ming Institute of Agriculture Modernization，Chinese Academy of Science，Shijiazhuang 050021，China 
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Abstract:
      Different position fertilizations were carried out for six years to make the fertility of the same soil differentiae and the soil with differentiated fertilities was used in simulating NH3 volatilization in laboratory．The results of the simulation revealed that the NH3 volatilizations from the soil with urea at the same rate by significantly differed，and the long-term nitrogen fertilization could reduce the period of NH3 volatilization by 3～ 4days as well as obviously reduce the NH3 volatilization．The long-term phosphorus fertilization also could reduce the NH3 volatilization，and NH3 volatilization significantly related to soil organic matter．
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