文献类型： 外文期刊

作者： Yu, Qiao-Gang ¹ ; Chen, Ying-Xu ² ; Ye, Xue-Zhu ² ; Tian, Guang-Ming ² ; Zhang, Zhi-Jian ² ;

作者机构： 1.Zhejiang Univ, Dept Environm Engn, Hangzhou 310029, Peoples R China

2.Zhejiang Univ, Dept Environm Engn, Hangzhou 310029, Peoples R China; Zhejiang Acad Agr Sci, Hangzhou 310021, Peoples R China

关键词： 3,4-Dimethyl pyrazole phosphate;nitrate pollution;nitrification inhibitor;soil solution;urea

期刊名称：CHEMOSPHERE （ 影响因子：7.086； 五年影响因子：6.956 ）

ISSN： 0045-6535

年卷期： 2007 年 69 卷 5 期

页码：

收录情况： SCI

摘要： The application of nitrogen fertilizers leads to various ecological problems such as nitrate leaching. The use of nitrification inhibitors as nitrate leaching retardants is a proposal that has been suggested for inclusion in regulations in many countries. In this study, using a multi-layer soil column device, the influence of new nitrification inhibitor DMPP (3,4-dimethyl pyrazole phosphate) was studied for understanding the nitrogen vertical transformation and lowering the nitrate leaching at different soil profile depths. The results indicated that, within 60 d of experiment, the regular urea added 1.0% DMPP can effectively inhibit the ammonium oxidation in the soil, and improve the ammonium concentration in soil solution over the 20 cm depths of soil profile, while decline the concentrations of nitrate and nitrite. No obvious difference was found on ammonium concentrations in soil solution collected from deep profile under 20 cm depths between regular urea and the urea added 1.0% DMPP. There was also no significant difference for the nitrate, ammonium and nitrite concentrations in the soil solution under 40 cm depths of soil profile with the increasing nitrogen application level, among the treatments of urea added 1.0% DMPP within 60 d. It is proposed that DMPP could be used as an effective nitrification inhibitor in some region to control ammonium oxidation and decline the ion-nitrogen leaching, minimizing the shallow groundwater pollution risk and being beneficial for the ecological environment. (C) 2007 Elsevier Ltd. All rights reserved.