农业资源与环境学报Issue(6)：91-95,5.
氮肥形态对坡耕地雨季土壤养分流失的影响
Effect of Nitrogenous Fertilizer Modality on Soil Nutrient Loss of Sloping Land in Rainy Season
摘要
Abstract
In order to discuss the effects of nitrogen forms on soil nutrient loss fluxes and approach, we used randomized block experiment de-sign, under simulated runoff observation method to study the effect of nitrogen forms and mulching on soil nutrient loss fluxes and approach in slope land. The results showed that the interflow loss of nitrogen, phosphorus and potassium was 71.30%,6.36%and 8.85%respectively of the total runoff. It indicated that the main way of phosphorus and potassium loss in the runoff was surface runoff, but the main way of nitrogen loss in the runoff was interflow. The nitrogen loss of amide nitrogen fertilizer and controlled release fertilizer was reduced by plastic mulching, the interflow nitrogen concentration and nitrogen loss quantity of amide nitrogen fertilizer by plastic mulching was reduced 40.40%and 29.32%compared with no mulching. On no mulching, the total nitrogen loss of runoff was given as follows:amide nitrogen fertilizer>ammonium nitro-gen fertilizer>controlled release fertilizer>nitrate fertilizer ,the nitrogen loss was minimum by nitrate nitrogen fertilizer on no mulching, it was 40.86%fewer than that of using amide nitrogen fertilizer. On plastic mulching, the total nitrogen of runoff was given as follows:ammonium ni-trogen fertilizer>amide nitrogen fertilizer>nitrate fertilizer>controlled release fertilizer, the nitrogen loss was minimum by slow controlled re-lease fertilizer on plastic film mulching conditions, it was 59.60%fewer than that of using ammonium fertilizer. In order to effectively control water and soil nutrient loss of purple hilly area in Sichuan Province, we recommend using nitrate nitrogen in bare soil conditions and using controlled release fertilizer in the plastic mulching conditions .关键词
氮肥形态/覆盖/土壤/养分流失Key words
nitrogenous fertilizer modality/mulching/soil/nutrient loss分类
资源环境引用本文复制引用
罗付香,林超文,涂仕华,庞良玉,张建华,罗春燕,朱波,朱永群..氮肥形态对坡耕地雨季土壤养分流失的影响[J].农业资源与环境学报,2013,(6):91-95,5.基金项目
国家科技支撑计划（2012BAD05B03-8）；国际植物营养研究所、国家公益性行业（农业）科研专项（201003014-6-4）；四川省公益性农业专项（12ZC1930）；四川省农业科学院青年基金 （）
