| Study on the rule of nitric nitrogen movement and distribution under film hole irrigation with fertilizer |
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| DOI：10.7606/j.issn.1000-7601.2008.01.44 |
| Key Words: film hole irrigation irrigation with fertilizer nitric nitrogen movement nitric nitrogen distribution |
| Author Name | Affiliation | | CHENG Dongjuan | Xi’an University of Technology Xi’an, Shaanxi 710048, China；Hebei Engineering University Handan,Hebei 056021, China | | FEI Liangjun | Xi’an University of Technology Xi’an, Shaanxi 710048, China | | LEI Yanbin | Project Office of Shaanxi Provincial Department of Water Resources,Xi’an, Shaanxi 710048, China | | YIN Juan | Xi’an University of Technology Xi’an, Shaanxi 710048, China |
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| Abstract: |
| Through experiment with self-made device for film hole infiltration,the rule of NO3-N movement and distribution under film hole irrigation with fertilizer is studied.The results show: the NO3-N concentration front movement consists with the water wet front movement in the course of water infiltration.The NO3-N content decreases with the increasing of distance from film hole center.The NO3-N content decreases abruptly to background value at the wet front; water moves slowly in the course of redistribution and water content distributes uniformly in the whole wet soil body.The NO3-N content decreases in the early 1～7 days of redistribution.Denitrification is more strongly in vertical indirection than in horizontal indirection and the NO3-N content decreases distinctly.The research results has laid a foundation for further study of film hole irrigation. |
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