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脲酶抑制剂NBPT提前施用对尿素水解和氨挥发的影响

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史云峰, 车志伟, 赵牧秋. 脲酶抑制剂NBPT提前施用对尿素水解和氨挥发的影响[J]. 环境保护科学, 2016, (5): 107-111. doi: 10.16803/j.cnki.issn.1004-6216.2016.05.021
引用本文: 史云峰, 车志伟, 赵牧秋. 脲酶抑制剂NBPT提前施用对尿素水解和氨挥发的影响[J]. 环境保护科学, 2016, (5): 107-111. doi: 10.16803/j.cnki.issn.1004-6216.2016.05.021
shu
Shi Yunfeng, Che Zhiwei, Zhao Muqiu. Effects of Pre-application of Urease Inhibitor NBPT on Urea Hydrolysis and Ammonia Volatilization[J]. Environmental Protection Science, 2016, (5): 107-111. doi: 10.16803/j.cnki.issn.1004-6216.2016.05.021
Citation: Shi Yunfeng, Che Zhiwei, Zhao Muqiu. Effects of Pre-application of Urease Inhibitor NBPT on Urea Hydrolysis and Ammonia Volatilization[J]. Environmental Protection Science, 2016, (5): 107-111. doi: 10.16803/j.cnki.issn.1004-6216.2016.05.021
shu

脲酶抑制剂NBPT提前施用对尿素水解和氨挥发的影响

  • 1. 海南热带海洋学院热带生物与农学院, 海南三亚 572022;

  • 2. 国家海洋局海口海洋环境监测中心站, 海南海口 570100

    • 作者简介: 史云峰(1981-),男,博士、教授。研究方向:土壤肥料,农业生态。
  • 基金项目:

    三亚市农业科技创新项目(2014NK25)

    三亚市专项科研试制项目(2014KS11)

    三亚市院地科技合作项目(2013YD83)

    海南耕地改良关键技术研究与示范专项及其配套项目(HNGDgl201501,2015PT28)基金资助

  • 中图分类号: X53;S154

Effects of Pre-application of Urease Inhibitor NBPT on Urea Hydrolysis and Ammonia Volatilization

  • 1. Collage of Tropical Biology and Agronomy, Hainan Tropical Ocean University, Sanya 572022, China;

  • 2. Haikou Marine Environmental Monitoring Station, State Oceanic Administration, Haikou 570100, China

  • Fund Project:

  • 摘要: 采用室内模拟培养试验,研究了脲酶抑制剂N-丁基硫代磷酰三胺(NBPT)比尿素提前施用不同天数(1、3、5 d)对土壤尿素残留量、铵态氮(NH4+-N)含量、脲酶活性及氨(NH3)挥发的影响。结果表明,提前3 d施用NBPT效果最优,能使整个培养期(0~20 d)土壤脲酶活性保持较低水平,土壤中尿素完全水解的时间由单施尿素的7 d延长至15~20 d,可使土壤在培养末期(20 d)保持较高水平的NH4+-N含量,同时使NH3挥发峰值出现时间比单施尿素推迟4 d、峰值强度降低74.5%、培养期内NH3-N累积挥发量降低53.5%。
    Abstract: In this paper, a simulated indoor incubation experiment was conducted to study the effects of pre-application of urease inhibitor N-(n-butyl)-thiophosphoric triamide (NBPT) (1, 3, 5 d earlier than the time of application of urea) on the concentrations of residual urea and ammonium nitrogen (NH4+-N), urease activity and ammonia (NH3) volatilization. The results showed that the effect of application of NBPT 3 days in advance was the best, with soil urease activity remaining at a low level during the whole incubation period (0-20 d). The time of complete urea hydrolysis in soils extended from 7 d with urea alone to 15~20 d. The concentration of NH4+-N in soils remained at a high level by the end of the incubation (20 d). Simultaneously, the peak time of NH3 volatilization delayed 4 days than that with urea alone, the peak strength reduced by 74.5%, and the quantity of cumulative NH3-N volatilization decreased by 53.5% during the incubation period.
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  • 收稿日期:  2016-03-07
史云峰, 车志伟, 赵牧秋. 脲酶抑制剂NBPT提前施用对尿素水解和氨挥发的影响[J]. 环境保护科学, 2016, (5): 107-111. doi: 10.16803/j.cnki.issn.1004-6216.2016.05.021
引用本文: 史云峰, 车志伟, 赵牧秋. 脲酶抑制剂NBPT提前施用对尿素水解和氨挥发的影响[J]. 环境保护科学, 2016, (5): 107-111. doi: 10.16803/j.cnki.issn.1004-6216.2016.05.021
shu
Shi Yunfeng, Che Zhiwei, Zhao Muqiu. Effects of Pre-application of Urease Inhibitor NBPT on Urea Hydrolysis and Ammonia Volatilization[J]. Environmental Protection Science, 2016, (5): 107-111. doi: 10.16803/j.cnki.issn.1004-6216.2016.05.021
Citation: Shi Yunfeng, Che Zhiwei, Zhao Muqiu. Effects of Pre-application of Urease Inhibitor NBPT on Urea Hydrolysis and Ammonia Volatilization[J]. Environmental Protection Science, 2016, (5): 107-111. doi: 10.16803/j.cnki.issn.1004-6216.2016.05.021
shu

脲酶抑制剂NBPT提前施用对尿素水解和氨挥发的影响

    作者简介: 史云峰(1981-),男,博士、教授。研究方向:土壤肥料,农业生态。
  • 1. 海南热带海洋学院热带生物与农学院, 海南三亚 572022;
  • 2. 国家海洋局海口海洋环境监测中心站, 海南海口 570100
  • 收稿日期:  2016-03-07
基金项目:

三亚市农业科技创新项目(2014NK25)

三亚市专项科研试制项目(2014KS11)

三亚市院地科技合作项目(2013YD83)

海南耕地改良关键技术研究与示范专项及其配套项目(HNGDgl201501,2015PT28)基金资助

摘要: 采用室内模拟培养试验,研究了脲酶抑制剂N-丁基硫代磷酰三胺(NBPT)比尿素提前施用不同天数(1、3、5 d)对土壤尿素残留量、铵态氮(NH4+-N)含量、脲酶活性及氨(NH3)挥发的影响。结果表明,提前3 d施用NBPT效果最优,能使整个培养期(0~20 d)土壤脲酶活性保持较低水平,土壤中尿素完全水解的时间由单施尿素的7 d延长至15~20 d,可使土壤在培养末期(20 d)保持较高水平的NH4+-N含量,同时使NH3挥发峰值出现时间比单施尿素推迟4 d、峰值强度降低74.5%、培养期内NH3-N累积挥发量降低53.5%。

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