Title: Characteristics of Nitrogen Loss Through Surface Flow and Interflow in Different Fertilization of Farmland in Liaoning Hunhe Basin
Abstract: A simulated artificial rainfall-runoff plots monitoring experiment was carried out to study farmland nitrogen loss with surface runoff and interflow affected by different fertilization ways in Hunhe river basin in Liaoning province,and exam the influence of different fertilization ways on nitrogen loss.Four treatment models were established: Control(CK),base fertilizer spot application(G1),base fertilizer spot application+topdressing surface application(G2),base fertilizer spot application+topdressing spot application(G3).Results indicated that:(1)With different fertilization ways,the runoff producing of surface runoff and interflow showed significant difference,surface runoff produced runoff before the soil runoff,and the runoff was higher than interflow,which was the main way of farmland runoff output.G2 reduced surface runoff,G3 increased interflow.(2)Surface runoff TN average concentration in G2 was significantly higher than other fertilization methods,which achieved 59.00 mg/L,there were small differences between other fertilization ways,and the highest average concentration of interflow TN was G3.(3)In the four fertilization ways,nitrogen total loss ranged from 385 mg to 814 mg,the total loss in all fertilization treatments were: G2 G3 G1 CK,and topdressing influenced nitrogen loss significantly.Compared with G2,G3 reduced the loss of surface nitrogen,at the same time,it would not significantly increase interflow nitrogen loss.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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