| 脲酶/硝化抑制剂对土壤中尿素氮转化及其生物有效性的影响 |
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| 引用本文： | 苏壮. 脲酶/硝化抑制剂对土壤中尿素氮转化及其生物有效性的影响[J]. 沈阳农业大学学报, 2005, 36(2): 230-232 |
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| 作者姓名： | 苏壮 |
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| 作者单位： | 沈阳农业大学,基础部,沈阳,110161 |
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| 摘 要： | 以等量氮、磷、钾肥料为前提条件，辅以不同的脲酶／硝化抑制剂，研究土壤中尿素氮的转化及对有效态氮释放速率的影响。试验结果表明：各抑制剂均能有效地降低NH4^＋-N的转化速率，使NH4^＋-N最大积累量延后14d左右，并且延缓了NO3^--N的释放高峰达60d以上。其作用效果顺序为：NBPT＋DCD〉NBPT〉乙酰甲胺磷〉甲胺。
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| 关 键 词： | 脲酶/硝化抑制剂 尿素 土壤 |
| 文章编号： | 1000-1700(2005)02-0230-03 |
| 收稿时间： | 2004-05-20 |
| 修稿时间： | 2004-05-20 |
Effects of Urease/Nitrification Inhibitor on Soil Urea-N Transformation and Bio-Availablity of Urea |
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| SU Zhuang. Effects of Urease/Nitrification Inhibitor on Soil Urea-N Transformation and Bio-Availablity of Urea[J]. Journal of Shenyang Aricultural University, 2005, 36(2): 230-232 |
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| Authors: | SU Zhuang |
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| Abstract: | The effects of urea-N transformation and concentration of available-N in soil were studied. In the condition of the same amount of N,P(P2O5), K(K2O) the experimental results showed: All inhibitors effectively reduced the speed and amount of transformation of NH4+-N was postponed about 14 days, and the highest release of NO3--N was postponed about 60 days. The highest accumulation of NH4+-N. The effects ranked as:NBPT+DCD>NBPT>Acephate>Methylamine. |
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| Keywords: | urease/nitrifieation inhibitor urea soil |
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