Contributions of Organic Nitrogen Forms to Mineralized Nitrogen during Incubation Experiments of the Soils on the Loess Plateau

文献类型： 外文期刊

第一作者： Li, Shiqing

作者： Li, Shiqing;Jin, Fahui;Shao, Ming'an;Lu, Hongling;Li, Shiqing;Jin, Fahui;Shao, Ming'an;Lu, Hongling;Lu, Hongling;Jin, Fahui

作者机构：

关键词： Interval leaching aerobic incubation;interval leaching water-logged incubation;mineralized N;N mineralization;organic N forms

期刊名称：COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS （ 影响因子：1.327； 五年影响因子：1.315 ）

ISSN： 0010-3624

年卷期： 2009 年 40 卷 21-22 期

页码：

收录情况： SCI

摘要： Interval leaching long-term water-logged incubation and interval leaching long-term aerobic incubation were carried out to study the changes of different soil organic nitrogen (N) forms and their contributions to mineralized N during N-mineralization process on 10 kinds of farmland soils with markedly different physical and chemical properties on the Loess Plateau. The results showed that the N-mineralization capability and capacity using the two incubation methods were evidently different. After 217 days, cumulative mineralized N, the decreased amounts of total acid-hydrolyzable N, acid-hydrolyzable ammonia N, and acid-hydrolyzable amino acid N in the water-logged incubation were about twice those in the aerobic incubation. Soluble organic N leached in the aerobic incubation was four times that in the water-logged incubation, which implied that organic N in the aerobic incubation mineralized more thoroughly than that in the water-logged incubation. The correlation analysis of the changes of soil organic N forms with crop N uptake showed that the reduced amount of total acid-hydrolyzable N in the water-logged incubation was closely associated with total N uptake by two successive-season crops (winter wheat and summer maize), and the decreased amounts of total acid-hydrolyzable N and amino acid N in the aerobic incubation were highly significantly related to the N uptake of both the first season crop (winter wheat) and successive-season maize. Multiple regression analysis, path analysis, and partial correlation analysis of the changes of soil organic N forms with mineralized N indicated that ammonia N was a main contribution to mineralized N in the water-logged incubation, whereas both acid-hydrolyzable amino acid and ammonia N were main contributions to mineralized N in the aerobic incubation. These results suggested that acid-hydrolyzable ammonia was the primary contribution to mineralized N during N mineralization process with the two incubation methods.

分类号：

  • 相关文献

[1]Elevated ozone effects on soil nitrogen cycling differ among wheat cultivars. Wu, Honghui,Li, Qi,Lu, Caiyan,Zhang, Lili,Yu, Qiang,Wu, Honghui,Yu, Qiang,Zhu, Jianguo,Dijkstra, Feike A..

[2]Nitrogen Mineralization from Animal Manures and Its Relation to Organic N Fractions. Li Ling-ling,Li Shu-tian,Li Shu-tian. 2014

[3]Nitrogen and carbon mineralization of surface-applied and incorporated winter wheat and peanut residues. Jin, Ke,Sleutel, Steven,De Neve, Stefaan,Gabriels, Donald,Hofman, Georges,Jin, Ke,Cai, Dianxiong,Jin, Jiyun. 2008

[4]Effects of Spartina alterniflora invasion and exogenous nitrogen on soil nitrogen mineralization in the coastal salt marshes. Zhang, Yaohong,Li, Yang,Huang, Lidong,Xie, Xiaojin,Yang, Shiqiong,Xu, Xianju,Dong, Jingming.

作者其他论文 更多>>

微信小程序