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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (15): 211-214.doi: 10.11924/j.issn.1000-6850.casb15010159

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

2种纳氏比色法检测土壤铵态氮的对比

苏伟波   

  1. 河南农大迅捷测试技术有限公司
  • 收稿日期:2015-01-21 修回日期:2015-02-26 接受日期:2015-03-20 出版日期:2015-06-02 发布日期:2015-06-02
  • 通讯作者: 苏伟波
  • 基金资助:
    河南省财政厅 2012特色产业中小企业发展资金 “郑州市技术研究与开发产学研结合项目” (0911SCXY00494)

Comparison of Two Kinds of Nessler Colorimetric Method to Detect Soil Ammonium Nitrogen

  • Received:2015-01-21 Revised:2015-02-26 Accepted:2015-03-20 Online:2015-06-02 Published:2015-06-02

PDF (PC)

547

摘要： 笔者对2种纳氏试剂比色方法检测土壤铵态氮进行了对比性试验，一种是常规的纳氏试剂比色法（常规法），一种是改进后的纳氏比色法（速测法），试验证明了速测法具有检测线性范围宽0~168mg/kg的优点，整个过程检测时间为25min，比常规法缩短一半；显色灵敏，显色稳定时间长，可稳定几小时以上；检测结果直接显示土壤中养分含量；操作方便快捷；成品试剂，不需要操作人员自配；检测成本低等优点。便携式速测仪及配套的检测方法满足基层测土配方施肥使用。

关键词: 土壤有机碳, 土壤有机碳, 空间变异特征, 影响因素, 动态变化

Abstract: Comparative experiments were carried out on two kinds of nessler colorimetric method for soil ammonium nitrogen measuring, one was a conventional nessler colorimetric method (routine method), another was an improved method of nessler (speed measuring method). The test showed that the speed measuring method with wide linear ranged for 0-168 mg/kg; the whole process of testing time was 25 min, which was half of routine method; the speed measuring method had a sensitive and stability color, it could be stable for a few hours; the test results could show soil nutrient content directly; the speed measuring method could also be operated convenient, it had no need to be operated by operation staff with finished product reagent. In addition, the speed measuring method had the advantage of cost saving. Portable measuring instrument and matched detection method could meet the basic measuring requirement for soil fertilizer use.