| Effects of a new nitrification inhibitor 3,4-dimethylpyrazole phosphate （DMPP） on nitrate and potassium leaching in two soils |
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| 作者姓名： | WU Shao-fu WU Liang-huan SHI Qi-wei WANG Zhong-qiang CHEN Xian-you LI Yong-shan |
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| 作者单位： | [1]Ministry of Education Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhefiang University, Hangzhou 310029, China. [2]Agricultural Extension Station of Shaoxing City, Shaoxing 312000, China [3]Agricultural Extension Station of Shaoxing Country, Shaoxing 312000, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （No. 30571082）, the Science and Technology Committee of Zhejiang Province （No. 021102084）, the Agriculture Department of Zhejiang Province （No. SN 200404） and BASF Company of Germany. Acknowledgements The authors would like to thank Mr. L M Zhang for his technical help during the measurements. |
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| 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.
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| 关 键 词： | 硝化抑制剂 3 4-二甲基吡唑磷酸盐 硝酸钾 土壤 磷流失 |
| 收稿时间： | 22 August 2006 |
| 修稿时间： | 2006-08-222006-12-06 |
Effects of a new nitrification inhibitor 3,4-dimethylpyrazole phosphate
(DMPP) on nitrate and potassium leaching in two soils |
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| WU Shao-fu,WU Liang-huan,SHI Qi-wei,WANG Zhong-qiang,CHEN Xian-you,LI Yong-shan.Effects of a new nitrification inhibitor 3,4-dimethylpyrazole phosphate
(DMPP) on nitrate and potassium leaching in two soils[J].Journal of Environmental Sciences,2007,19(7):841-847. |
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| Authors: | WU Shao-fu WU Liang-huan SHI Qi-wei WANG Zhong-qiang CHEN Xian-you and LI Yong-shan |
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| Institution: | Ministry of Education Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China. sf_wu@163.com |
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| Abstract: | 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 NH4NO3) 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 effciency of DMPP seems better in the sandy loam soil than in the clay loam soil and lasts longer. |
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| Keywords: | 3 4-dimethylpyrazole phosphate (DMPP) nitrate potassium leaching sandy loam soil clay loam soil |
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