dc.contributor.author | Huang, Manxiang | |
dc.contributor.author | Liang, Tao | |
dc.contributor.author | Ou-Yang, Zhu | |
dc.contributor.author | Wang, Lingqing | |
dc.contributor.author | Zhang, Chaosheng | |
dc.contributor.author | Zhou, Chenghu | |
dc.date.accessioned | 2018-09-20T16:11:27Z | |
dc.date.available | 2018-09-20T16:11:27Z | |
dc.date.issued | 2011-08-02 | |
dc.identifier.citation | Huang, Manxiang; Liang, Tao; Ou-Yang, Zhu; Wang, Lingqing; Zhang, Chaosheng; Zhou, Chenghu (2011). Leaching losses of nitrate nitrogen and dissolved organic nitrogen from a yearly two crops system, wheat-maize, under monsoon situations. Nutrient Cycling in Agroecosystems 91 (1), 77-89 | |
dc.identifier.issn | 1385-1314,1573-0867 | |
dc.identifier.uri | http://hdl.handle.net/10379/12003 | |
dc.description.abstract | A large amount of nitrogen (N) fertilizers applied to the winter wheat-summer maize double cropping systems in the North China Plain (NCP) contributes largely to N leaching to the groundwater. A series of field experiments were carried out during October 2004 and September 2007 in a lysimeter field to reveal the temporal changes of N leaching losses below 2-m depth from this land system as well as the effects of N fertilizer application rates on N leaching. Four N rates (0, 180, 260, and 360 kg N ha(-1) as urea) were applied in the study area. Seasonal leachate volumes were 87 and 72 mm in the first and second maize season, respectively, and 13 and 4 mm during the winter wheat and maize season in the third rotational year, respectively. The average seasonal flow-weighted NO(3)-N concentrations in leachate for the four N fertilizer application rates ranged from 8.1 to 103.7 mg N l(-1), and seasonal flow-weighted dissolved organic nitrogen (DON) concentrations in leachate varied from 0.8 to 6.0 mg N l(-1). Total amounts of NO(3)-N leaching lost throughout the 3 years were in the range of 14.6 to 177.8 kg ha(-1) for the four N application rates, corresponding to N leaching losses in the range of 4.0-7.6% of the fertilizers applied. DON losses throughout the 3 years were 1.4, 2.1, 3.6, and 6.3 kg N ha(-1) for the four corresponding fertilization rates. The application rate of 180 kg N ha(-1) was recommended based on the balance between reducing N leaching and maintaining crop yields. The results indicated that there is a potential risk of N leaching during the winter wheat season, and over-fertilization of chemical N can result in substantial N leaching losses by high-intensity rainfalls in summer. | |
dc.publisher | Springer Nature | |
dc.relation.ispartof | Nutrient Cycling in Agroecosystems | |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Ireland | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ | |
dc.subject | dissolved organic nitrogen | |
dc.subject | nitrate nitrogen | |
dc.subject | leaching losses | |
dc.subject | north china plain | |
dc.subject | double-cropping system | |
dc.subject | in-field lysimeters | |
dc.subject | winter-wheat | |
dc.subject | management strategies | |
dc.subject | agricultural soils | |
dc.subject | corn | |
dc.subject | fertilization | |
dc.subject | accumulation | |
dc.subject | rotation | |
dc.title | Leaching losses of nitrate nitrogen and dissolved organic nitrogen from a yearly two crops system, wheat-maize, under monsoon situations | |
dc.type | Article | |
dc.identifier.doi | 10.1007/s10705-011-9447-z | |
dc.local.publishedsource | http://ir.igsnrr.ac.cn/bitstream/311030/23802/2/Huang-2011-Leaching%20losses%20of%20n.pdf | |
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