Ecology and Resilient Infrastructure

Korean Society of Ecology and Infrastructure Engineering (응용생태공학회)
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Effects of a Negative-Phototropism Pot on the Seedling Growth of Betula platyphylla var. japonica for the Ecological Revegetation

배광성용기 사용이 생태녹화용 자작나무 유묘 생장에 미치는 영향

  • Kang, Byoung Youn (Department of Environmental Landscape Architecture, Cheongju University) ;
  • Kim, Jae Hwan (Department of Landscape Architecture & Urban Plan, Cheongju University)
  • 강병연 (청주대학교 환경조경학과) ;
  • 김재환 (청주대학교 조경도시계획전공)
  • Received : 2019.12.10
  • Accepted : 2019.12.23
  • Published : 2019.12.31
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Abstract

This study investigated the effects of various cultivation pots on Betula platyphylla var. japonica seedlings in order to select suitable pots for the production of healthy seedlings for the ecological revegetation. We used six types of the pots natural pot, natural pot with inside 5 mm width root turning bump, natural pot with inside 10 mm width root turning bump, negative-phototropism pot, negative-phototropism pot with inside 5 mm width root turning bump, and negative-phototropism pot with inside 10 mm width root turning bump. As greenhouse cultivation provided a high level of control of irrigation and temperature, the seedlings did not show any significant differences in plant height, number of branches, and diameter at root collar, but showed a significant difference in root growth among the different types of pots. The root growth was best in the negative-phototropism pot. In the negative-phototropism, the roots grew in a vertical shape, while they grew abnormally in a spiral shape in the natural pots. In outdoor cultivation, the growth of seedlings showed significant differences according to container types. The seedlings grown in specially manufactured negative-phototropism pots were most excellent in all of the height, number of branches, diameter at root collar and root growth. As for the seedlings grown in the negative-phototropism pots, their roots grew vertically and thus their rooting was well established after they were transplanted outdoor. A size of less than 5 mm ridge installed in the negative-phototropism was found to be appropriate for the seedling growth. These results showed that the negative-phototropism pot would be best suitable for the growth of Betula platyphylla var. japonica seedlings and for the production of seedling for ecological revegetation.

본 연구에서는 생태녹화용 유묘 생산에 적합한 재배용기를 선별하기 위하여 다양한 재배용기가 자작나무 유묘에 미치는 영향을 조사하였다. 실험에 사용한 용기는 일반용기, 일반용기 내부에 융기선 5 mm와 10 mm 설치, 일반용기 표면에 세로 절개홈 있는 배광성용기, 배광성용기 내부에 융기선 5 mm와 10 mm를 설치한 용기이었다. 재배용기에 따른 유묘생장 특성은 다음과 같다. 실험결과 온실 재배에서는 관수, 온도 등 관리도가 높아 수고, 가지수, 근원경 생장의 유의차가 없었으나, 뿌리생장은 유의차를 보이며 배광성용기에서 우수했다. 일반용기는 뿌리가 나선형의 비정상으로 자란 반면 배광성용기는 뿌리가 수직으로 자랐다. 노지이식 후 재배용기 처리에 따라 유의차를 보이며, 수고, 가지수, 근원경, 뿌리생장 모두 배광성용기에서 자란 유묘가 가장 우수한 것으로 나타났다. 배광성용기에서 자란 유묘의 경우 뿌리가 수직으로 생장해 노지 이식 후 뿌리활착 및 생장이 우수했으며, 용기내부에 설치한 융기선은 5 mm이내가 적정한 것으로 나타났다. 따라서 배광성용기를 사용한 생태녹화용 자작나무 유묘에서 수고, 가지수, 근원경 및 뿌리생장에 큰 효과를 보여 배광성용기가 유묘생산에 적합한 것으로 판단되었다.

Keywords

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