| Experimental investigation on water and nitrogen transforming characteristics under intermittent infiltration of urea solution |
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| DOI：10.7606/j.issn.1000-7601.2013.05.041 |
| Key Words: surge irrigation intermittent infiltration transformation of water and nitrogen urea |
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| Abstract: |
| The transforming characteristics of NH4+ and NO3- in soil and groundwater were analyzed through continuous and intermittent one dimensional vertical infiltration test under surge fertigation with urea. The results showed that intermittent infiltration was superior to continuous infiltration in retaining fertilizer and it could relieve the pollution of groundwater caused by agricultural fertilization. The research results laid foundatio
n for further study of the transforming characteristics of water and urea and the environmental effects of groundwater under surge irrigation. |