Journal of Integrative Agriculture ›› 2014, Vol. 13 ›› Issue (9): 2040-2048.DOI: 10.1016/S2095-3119(14)60769-3

• 论文 • 上一篇    下一篇

Nitrogen Mineralization from Animal Manures and Its Relation to Organic N Fractions

 LI Ling-ling , LI Shu-tian   

  1. 1、Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
    2、International Plant Nutrition Institute (IPNI) Beijing Office, B eijing 100081, P.R.China
  • 收稿日期:2013-12-02 出版日期:2014-09-22 发布日期:2014-09-24
  • 通讯作者: LI Shu-tian, Tel: +86-10-82108000, Mobile: 13911076036, E-mail: lishutian@caas.cn
  • 基金资助:

    This research was financially supported by the National Basic Research Program (973 Program) of China (2013CB127406) and was completed in the Key Lab of Plant Nutrition and Fertilizer of Ministry of Agriculture, China.

Nitrogen Mineralization from Animal Manures and Its Relation to Organic N Fractions

 LI Ling-ling , LI Shu-tian   

  1. 1、Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
    2、International Plant Nutrition Institute (IPNI) Beijing Office, B eijing 100081, P.R.China
  • Received:2013-12-02 Online:2014-09-22 Published:2014-09-24
  • Contact: LI Shu-tian, Tel: +86-10-82108000, Mobile: 13911076036, E-mail: lishutian@caas.cn
  • Supported by:

    This research was financially supported by the National Basic Research Program (973 Program) of China (2013CB127406) and was completed in the Key Lab of Plant Nutrition and Fertilizer of Ministry of Agriculture, China.

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摘要： Laboratory aerobic incubation was conducted for 161 d to study N mineralization and the changes of organic N fractions of nine different manures (3 chicken manures, 3 pig manures and 3 cattle manures) from different farms/locations. Results indicated that significant (P<0.01 or P<0.001) difference existed in N mineralization between manures. The rapid N mineralization in manures occurred during 56 to 84 d of incubation. First order exponential model can be used to describe N mineralization from chicken manures and pig manures, while quadratic equation can predict mineralization of organic N from cattle manures. An average of 21, 19 and 13% added organic N from chicken manure, pig manure and cattle manure was mineralized during 161 d of incubation. Amino acid-N was the main source of N mineralization. The changes of amino acid-N together with ammonium N could explain significantly 97 and 96% of the variation in mineralized N from manured soils and manures. Amino acid-N and ammonium N are two main N fractions in determining N mineralization potential from manures. Amino acid-N contributed more to the mineralized N than ammonium N.

关键词: N mineralization , N fraction , pig manure , chicken manure , cattle manure

Abstract: Laboratory aerobic incubation was conducted for 161 d to study N mineralization and the changes of organic N fractions of nine different manures (3 chicken manures, 3 pig manures and 3 cattle manures) from different farms/locations. Results indicated that significant (P<0.01 or P<0.001) difference existed in N mineralization between manures. The rapid N mineralization in manures occurred during 56 to 84 d of incubation. First order exponential model can be used to describe N mineralization from chicken manures and pig manures, while quadratic equation can predict mineralization of organic N from cattle manures. An average of 21, 19 and 13% added organic N from chicken manure, pig manure and cattle manure was mineralized during 161 d of incubation. Amino acid-N was the main source of N mineralization. The changes of amino acid-N together with ammonium N could explain significantly 97 and 96% of the variation in mineralized N from manured soils and manures. Amino acid-N and ammonium N are two main N fractions in determining N mineralization potential from manures. Amino acid-N contributed more to the mineralized N than ammonium N.

Key words: N mineralization , N fraction , pig manure , chicken manure , cattle manure