水土保持学报2012，Vol.26Issue(4)：69-72,76,5.
辽宁省浑河流域不同施肥方式下农田氮素随地表径流与壤中流流失特征
Characteristics of Nitrogen Loss Through Surface Flow and Interflow in Different Fertilization of Farmland in Liaoning Hunhe Basin
摘要
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 q-topdressing surface application（G2）, base fertilizer spot application q-topdressing spot application （G3）. Results indicated that： （1）With different fertilization ways, the runoff producing of surface runoff and inter- flow 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 rag/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, nitro- gen 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.关键词
人工模拟降雨/施肥方式/地表径流/壤中流/氮素流失Key words
simulated artificial rainfall fertilization way surface flow interflow nitrogen loss分类
农业科技引用本文复制引用
周林飞,郝利朋,张玉龙..辽宁省浑河流域不同施肥方式下农田氮素随地表径流与壤中流流失特征[J].水土保持学报,2012,26(4):69-72,76,5.基金项目
国家自然科学基金面上项目 （）
