Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effect of Growth Environment on the Root Development of Pasture Species II. Root distribution under contrasting fold situations

생육환경이 주요 목초의 뿌리발육에 미치는 영향 II. 생육환경에 따른 뿌리 분포

  • Hur, S.N. (Institute of Agricultural Science & Technology, Chonbuk National University) ;
  • David Scott (AgResearch, New Zealand Pastoral Agriculture Research Institute)
  • 허삼남 (전북대학교 농업과학기술연구소) ;
  • Published : 2003.06.01
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Abstract

Rhizotron technique was used to determine the zone of active root growth in contrasting field situations. The distribution of roots with depth showed most root in the 15∼30 cm layer with fewer in the 0∼15 cm and below 30 cm layer at Lincoln Farm, while root density increased with depth at Winchmore. At Mt Johm (Lake Tekapo) roots were more distributed near soil surface. Root density was increased with fertilizer and irrigation at Mt John. Root number showed the same trends as root length at all lesions. Tube method was good for comparative purposes, and for long-term root growth studies at the same place.

비교되는 포장조건에 따라 부리 분포 양상을 조사하기 위하여 Rhizotron법을 사용하였다. Lincoln 지역에서 토양 깊이에 따른 뿌리의 분포는 15∼30 cm 깊이에 대부분의 뿌리가 분포되어 있고, 0∼15 cm와 30 cm 이하에서는 분포가 적었다. 반면, Winchmore에서는 토양 깊이가 깊어질 수록 뿌리 수가 많아졌다. Mt John에서는 표토에 가까울 수록 뿌리 분포도가 더 높았으며, 시비량이 높고 관개를 한 곳이 부리 분포가 더 높았다. 모든 지역에서 토양 깊이에 따른 뿌리 수의 분포는 뿌리 길이와 같은 경향을 보여주었다. Tube법이 같은 장소에서 뿌리의 비교 연구와 장기간 무리 생장 연구를 하는데 좋은 방법임이 입증되었다.

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References

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