KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Estimation of Leaf Area Index by Plant Canopy Analyzer in Rice

군락구조계를 이용한 벼 엽면적 측정

  • Park H. K. (Honam Agricultural Research Institute, National Institute of Crop Science) ;
  • Choi W. Y. (Honam Agricultural Research Institute, National Institute of Crop Science) ;
  • Back N. H. (Honam Agricultural Research Institute, National Institute of Crop Science) ;
  • Kim S. S. (Honam Agricultural Research Institute, National Institute of Crop Science) ;
  • Kim B. K. (Honam Agricultural Research Institute, National Institute of Crop Science) ;
  • Kim K. K. (Honam Agricultural Research Institute, National Institute of Crop Science)
  • Published : 2004.12.01
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Abstract

This study was carried out to estimate of leaf area index (LAI) rapidly using plant canopy analyzer, comparing with specific leaf area (SLA) and leaf area ratio (LAR) in rice from 2001 to 2002 at Honam Agricultural Research Institute in Iksan Korea. The relationship between LAI values taken by plant canopy analyzer and by leaf area meter showed high correlation at each growth stages of rice. LAIs obtained by plant canopy analyzer were highly correlated with that by leaf area meter which were the highest in Dongjinbyeo and the lowest in Hapcheon1. Specific leaf area (SLA) of all rice cultivars were tend to decrease remarkably with the progress of growth stage. It was found that the SLA of Dasanbyeo was the highest and that of Hapcheon1 was the lowest among rice cultivars tested. Leaf area ratios (LARs) was also decreased with the progress of growth stage.

식물 군락구조계를 이용하여 벼의 품종 및 생육단계별로 엽면적지수를 측정하여 실측치와 비교 분석함으로써 비파괴적 방법으로 엽면적을 측정하고자 동진벼 등 4품종을 공시하여 2년간$('01\~'02)$ 시험한 결과는 다음과 같다. 1. 군락구조계로 측정한 엽면적지수 값(추정치)과 엽면적측정기로 측정한 엽면적지수 값(실측치)과는 고도의 유의적인 상관관계를 나타냈다. 2. 군락구조계로 측정한 엽면적지수와 엽면적기를 이용한 엽면적지수와는 공시품종 모두 고도의 상관이 있었으며 품종간에는 동진벼>소비벼>다산벼> 합천 1호의 순으로 두 측정치가 일치하는 경향이었다. 또한 대부분의 품종에서 엽면적지수가 4내외일 때 두 값이 가장 잘 일치하였다. 3. 비엽중과 엽면적 비율은 생육이 경과함에 따라 적어지는 경향이었고, 품종간에는 다산벼>소비벼$\fallingdotseq$극동진벼> 합천1호의 순으로 컸으며 합천1호는 단위 무게당 엽면적이 $160m^2/kg$내외로 두 측정치 모두 현저히 적었다.

Keywords

References

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