不同氮肥对侵蚀坡面土壤氮素流失的影响  

Effect of Different Nitrogen Fertilizer on Nitrogen Loss of Erosion Slope Soil

作　　者：张秀玮[1] 李光宗[2] 董元杰[1] 王全辉[1] 刘春生[1] 

机构地区：[1]山东农业大学资源与环境学院．土肥高效利用国家工程实验室,国家缓控释肥工程技术研究中心,山东泰安271018 [2]山东省济阳县农业局,山东济阳251400

出　　处：《水土保持学报》2012年第2期45-48,共4页Journal of Soil and Water Conservation

基　　金：国家“十二五”科技支撑计划项目(2011BAD11B01,2011BAD11B02);国家“948”重点项目(2011-G30);山东省中青年科学家奖励基金项目(BS2009NY025);山东省自然科学基金项目(ZR2009DM043)

摘　　要：在模拟降雨条件下研究等氮量和相同施肥方式下不同氮肥品种的氮素流失特征。结果表明:不同氮肥品种对氮素流失量有显著影响,施用碳酸氢铵、普通尿素的小区全氮、铵态氮和硝态氮的流失量较大,而施用包膜控释尿素则可以显著降低氮素流失量。不同施肥处理的小区径流液中全氮、NH4+-N及流失泥沙中全氮的流失规律表现为碳酸氢铵>尿素>硫包膜控释尿素>树脂包膜控释尿素>对照;径流液中NO3--N的流失量表现为尿素>碳酸氢铵>硫包膜控释尿素>树脂包膜控释尿素>对照。With a simulated rainfall equipment,the pattern of soil nitrogen loss under a same rainfall intensities was studied by plot test on sloping surfaces.Results showed that under the same conditions,the different kind of fertilizer had significant difference.Compared with ammonium bicarbonate and urea,the controlled-release urea could reduce the loss of nitrogen.In the same situation,the amount of total nitrogen,ammonium nitrogen in runoff and total nitrogen in sediment was given as follows： Ammonium bicarbonate urea sulphur coated control-released urea resin coated control-released urea.The amount nitric nitrogen loss in runoff was given as follows： Urea ammonium bicarbonate sulphur coated control-released urea resin coated control-released urea.

关 键 词：模拟降雨 不同氮肥 坡面 侵蚀土壤 氮素流失 

分 类 号：S143.1[农业科学—肥料学] S157.1[农业科学—农业基础科学]