| 脲酶-硝化抑制剂对减缓尿素转化产物氧化及淋溶的作用 |
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| 引用本文： | 陈振华,陈利军,武志杰. 脲酶-硝化抑制剂对减缓尿素转化产物氧化及淋溶的作用[J]. 应用生态学报, 2005, 16(2): 238-242 |
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| 作者姓名： | 陈振华 陈利军 武志杰 |
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| 作者单位： | 1. 中国科学院沈阳应用生态研究所, 沈阳, 110016;2. 中国科学院研究生院, 北京, 100039 |
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| 基金项目： | 中国科学院知识创新工程重大资助项目(KZCX2413) |
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| 摘 要： | 利用原状土柱模拟试验,研究了脲酶抑制剂氢醌(HQ),硝化抑制剂包被碳化钙(ECC)和双氰胺(DCD)以及它们的不同组合对尿素转化产物土壤持留、氧化以及淋溶的影响.结果表明,与其它抑制剂处理相比,HQ+DCD组合能有效抑制尿素水解产物的氧化,使其以交换态NH4+的形式在土壤中长时间持留;氧化作用的抑制不仅减少了氧化产物NO3-的累积,也降低了NO3-淋溶潜势,使其淋入下层土壤的深度仅限在5～10 cm范围内,且淋溶量显著降低.
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| 关 键 词： | 脲酶抑制剂 硝化抑制剂 铵态氮 硝态氮 NO3淋溶 |
| 文章编号： | 1001-9332(2005)02-0238-05 |
| 收稿时间： | 2004-07-26 |
| 修稿时间： | 2004-07-26 |
Effects of urease and nitrification inhibitors on alleviating the oxidation and leaching of soil urea's hydrolyzed product ammonium |
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| CHEN Zhenhua,,CHEN Lijun,WU Zhijie. Effects of urease and nitrification inhibitors on alleviating the oxidation and leaching of soil urea's hydrolyzed product ammonium[J]. The journal of applied ecology, 2005, 16(2): 238-242 |
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| Authors: | CHEN Zhenhua CHEN Lijun WU Zhijie |
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| Affiliation: | 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | With simulation test of in-situ soil column, this paper studied the effects of urease inhibitor hydroquinone (HQ), nitrification inhibitors coated calcium carbide (ECC) and dicyandiamide (DCD),and their different combinations on the persistence, oxidation, and leaching of soil urea's hydrolyzed product ammonium. The results showed that compared with other treatments, the combination of HQ and DCD could effectively inhibit the oxidation of the ammonium, and make it as exchangeable form reserve in soil in a larger amount and a longer period. The inhibition of this oxidation not only decreased the accumulation of oxidized product NO3- in soil, but also decreased the potential of NO3- leaching, making the NO3- only leach to 5-10 cm in depth, and the leached amount significantly decreased. |
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| Keywords: | Urease inhibitor Nitrification inhibitor NH_4~+-N NO_3~--N NO_3~-leaching. |
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