Effects of a new nitrification inhibitor 3,4-dimethylpyrazole phosphate(DMPP) on nitrate and potassium leaching in two soils

作     者：WU Shao-fu WU Liang-huan SHI Qi-wei WANG Zhong-qiang CHEN Xian-you LI Yong-shan 

作者机构：Ministry of Education Key Lab of Environmental Remediation and Ecosystem Health College of Environmental and Resource Sciences Zhefiang University Hangzhou 310029 China. Agricultural Extension Station of Shaoxing City Shaoxing 312000 China Agricultural Extension Station of Shaoxing Country Shaoxing 312000 China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2007年第19卷第7期

页      面：841-847页

核心收录：

学科分类：082802[工学-农业水土工程] 090707[农学-水土保持与荒漠化防治] 0907[农学-林学] 08[工学] 0828[工学-农业工程] 09[农学] 0815[工学-水利工程] 

基　　金：Project supported by the National Natural Science Foundation of China(No. 30571082) the Science and Technology Committee of ZhejiangProvince (No. 021102084) the Agriculture Department of ZhejiangProvince (No. SN 200404) and BASF Company of Germany 

主　　题：3,4-dimethylpyrazole phosphate (DMPP) nitrate potassium leaching sandy loam soil clay loam soil 

摘      要：In this study, soil column was used to study the new nitrification inhibitor 3,4-dimethylpyrazole phosphate （DMPP） on nitrate （NO3^-- N） and potassium （K） leaching in the sandy loam soil and clay loam soil. The results showed that DMPP with ammonium sulphate nitrate （ASN） （（NH4）2SO4 and NHaNO3） or urea could reduce NO3^--N leaching significantly, whereas ammonium （NH4^＋-N） leaching increased slightly. In case of total N （NO3^--N＋NH4^＋-N）, losses by leaching during the experimental period （40 d） were 37.93 mg （urea）, 31.61 mg （urea＋DMPP）, 108.10 mg （ASN）, 60.70 mg （ASN＋DMPP） in the sandy loam soil, and 30.54 mg （urea）, 21.05 mg （urea＋DMPP）, 37.86 mg （ASN）, 31.09 mg （ASN＋DMPP） in the clay loam soil, respectively. DMPP-amended soil led to the maintenance of relatively high levels of NH4^＋ -N and low levels of NO3^--N in soil, and nitrification was slower. DMPP supplementation also resulted in less potassium leached, but the difference was not significant except the treatment of ASN and ASN＋DMPP in the sandy loam soil. Above results indicate that DMPP is a good nitrification inhibitor, the efficiency of DMPP seems better in the sandy loam soil than in the clay loam soil and lasts longer.