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Evaluation of nitrification inhibitor 3,4-dimethyl pyrazole phosphate on nitrogen leaching in undisturbed soil columns

文献类型： 外文期刊

作者： Yu, Qiaogang 1 ; Chen, Yingxu 2 ; Ye, Xuezhu 2 ; Zhang, Qiuling 2 ; Zhang, Zhijian 2 ; Tian, Ping 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;nitrification inhibitor;nitrate leaching;nitrate pollution;nitrogen fertilizer;OXIDE EMISSIONS;PADDY FIELD;NITRATE;DMPP;DICYANDIAMIDE;FERTILIZER;OXIDATION;NITRITE;FLUXES;ZONE

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

ISSN：

年卷期：

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 (NI) as nitrate leaching retardants is a proposal that has been suggested for inclusion in regulations in many countries. In this study, the efficacy of the new NI, 3,4-dimethyl pyrazole phosphate (DMPP), was tested under simulated high-risk leaching situations in two types of undisturbed soil columns. The results showed that the accumulative leaching losses of soil nitrate under treatment of urea with 1.0% DMPP, from columns of silt loam soil and heavy clay soil, were 66.8% and 69.5% lower than those soil columns tested with regular urea application within the 60 days observation, respectively. However, the losses of ammonium leaching were reversely increased 9.7% and 6.7% under the former treatment than the latter one. Application of regular urea with 1.0% DMPP addition can reduce about 59.3%-63.1% of total losses of inorganic nitrogen via leaching. The application of DMPP to urea had stimulated the inhibition effects of DMPP on the ammonium nitrification process in the soil up to 60 days. It is proposed that the DMPP could be used as an effective NI to control inorganic N leaching losses, minimizing the risk of nitrate pollution in shallow groundwater. (c) 2006 Elsevier Ltd. All rights reserved.

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