成都平原不同施肥水平下稻田地表径流氮、磷流失初探  

Nitrogen and Phosphorus Loss by Surface Runoff in Different Fertilization Levels in Chengdu Plain

作　　者：陈琨[1,2] 赵小蓉[2] 王昌全[1] 曾祥忠[2] 赵燮京[2] 

机构地区：[1]四川农业大学资源环境学院,四川雅安625014 [2]四川省农业科学院土壤肥料研究所,四川成都610066

出　　处：《西南农业学报》2009年第3期685-689,共5页Southwest China Journal of Agricultural Sciences

基　　金：国家支撑计划2007BAD89B15

摘　　要：通过在成都平原稻麦轮作区建立5种不同的施肥水平处理模式,对每个小区径流水样中的氮磷含量分析,探讨成都平原区氮磷流失系数及其影响因素。结果表明,不同处理方式下氮磷流失系数为:常规处理为氮素0.047%、磷素0.018%;优化施肥处理为氮素0.042%、磷素0.021%;增氮处理为氮素0.034%、磷素0.026%;增磷处理为氮素0.015%、磷素0.040%;保护性耕作为氮素0.018%、磷素0.017%。Through establishing five different kinds of treatment models of fertilization levels in rice-wheat rotation in Chengdu Plain, the content of nitrogen and phosphorus in each community of runoff water samples was analyzed, the loss coefficient of nitrogen and phosphorus and its influencing factors was discussed. The results showed that in different kinds of treatment models the loss coefficient of nitrogen and phosphorus were as follows： nitrogen was 0. 047 % and phosphorus was 0.018 % in conventional treatment; nitrogen was 0. 042 % and phosphorus was 0. 021% in optimize fertilization treatment; nitrogen was 0. 034 % and phosphorus was 0. 026 % in nitrogen increasing treatment ; nitrogen was 0.015 % and phosphorus was 0. 040 % in phosphorus increasing treatment, and nitrogen was 0. 018 % and phosphorus was 0. 017 % in conservation tillage.

关 键 词：成都平原区 地表径流 流失系数 

分 类 号：S152.72[农业科学—土壤学]