Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
권호 표지

Use of NIR Technique for Determination of Total Phosphorus and Available Phosphorus in Korean Soils

토양의 총인산과 유효인산함량을 측정하기 위한 근적외 기술의 이용

  • Ryu, Kwan-Shig (College of life and environmental sciences, Daegu University) ;
  • Park, Ji-Sook (College of life and environmental sciences, Daegu University)
  • 유관식 (대구대학교 생명환경대학) ;
  • 박진숙 (대구대학교 생명환경대학)
  • Received : 2007.12.28
  • Accepted : 2008.02.03
  • Published : 2008.02.28
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Abstract

NIR spectroscopy is newly developed tools determining the soil properties. Phosphorus in soil is one of the most difficult and time consuming elements to assess for plant needs. The calibration coefficient(R) of NIR method for total phosphorus by $HClO_4$ and $Na_2CO_3$ P was 0.91 and 0.88, and available phosphorus by Lancaster and Bray 1. extractant was 0.88 and 0.82. According to Williams guidelines for the calibration coefficient, NIR method could also be used for estimating total and available phosphorus if one performed optimal calibration for predicting soil properties. Applicability of NIR spectra, if improved accuracy, may allow the use of soil testing.

근적외선스펙트로메타는 토양의 성분을 측정하는 새로운 기술로 발전하고 있다. 작물이 요구하는 토양의 인산 함량을 측정하는 데는 시간이 많이 소요되며, 침출액과 침출조건에 따라서 다르기 때문에 어려운 성분이다. 그러나 근적외선 방법을 이용하여 표준곡선을 정확하게만 만들어, 표준곡선 작성 시 Wiliams의 상관계수안내를 이용하면 상관계수의 수치에 따라서 토양의 총인산과 유효인산을 측정하는데 간편하게 이용할 수 있다. 또한 근적외 기술은 정밀도를 향상하면 포장 현지에서의 토양검정에도 쉽게 이용할 수 있는 쉬운 기술로 생각된다.

Keywords

References

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