Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Growth Characteristics of One-year-old Container Seedlings of Pinus densiflora by Irrigation Level

관수수준에 따른 소나무 용기묘 1년생의 생장 특성

  • Cha, Young-Geun (Department of Forestry and Landscape Architecture, Konkuk University) ;
  • Choi, Kyu-Seong (Plant Propagation and Reproduction Division, Baekdudaegan National Arboretum) ;
  • Song, Ki-Seon (Forestry Knowledge Service Division, Korea Forestry Promotion Institute) ;
  • Sung, Hwan-In (Department of Forestry and Landscape Architecture, Graduate School of Agriculture and Animal Science, Konkuk University) ;
  • Kim, Jong-Jin (Department of Forestry and Landscape Architecture, Konkuk University)
  • 차영근 (건국대학교 산림조경학과) ;
  • 최규성 (국립백두대간수목원 식물양묘실) ;
  • 송기선 (한국임업진흥원 임업지식서비스단) ;
  • 성환인 (건국대학교 농축대학원 산림조경학과) ;
  • 김종진 (건국대학교 산림조경학과)
  • Received : 2017.01.30
  • Accepted : 2017.07.04
  • Published : 2017.07.31
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Abstract

To identify the appropriate irrigation level for Pinus densiflora, a common reforestation species in Korea, we investigated their growth response characteristics according to different irrigation treatment levels for producing container seedlings with relatively high growth rate for higher survival rate when planted at the reforestation site. The container seedlings including control seedlings (no irrigation was applied) were grown in 104-cell trays were irrigated for 8 weeks from 15 weeks after seeding, at intervals of 1, 2, 3, 5, 7, 10, and 15 days. Analysis of the height growth, root collar diameter growth, and dry matter production of the container seedlings according to irrigation showed that the highest growth reaction was observed for the irrigation interval of 1 day. A shorter irrigation cycle resulted in better growth of the container seedlings, but overall, longer total root length were observed with an irrigation cycle of 3 days compared with cycles of 1 or 2 days. Quality index (QI) was the highest for the irrigation interval of 1 day, and tended to decrease with increase in the irrigation interval. Thus, it was determined that irrigation at intervals of 1-2 days was appropriate for growing Pinus densiflora container seedlings.

본 연구는 우리나라의 대표적인 조림수종인 소나무를 대상으로 조림지 식재 후 활착률을 높이기 위해 상대적으로 생육이 좋은 용기묘로 생산하고자 할 때, 관수처리 수준에 따른 생장 반응 특성을 조사하고 이를 통하여 적정 관수 수준을 구명하고자 실시되었다. 104구 용기에서 생육된 소나무 용기묘는 대조구(무관수)를 포함하여 파종 후 15주부터 8주 동안 각각 1, 2, 3, 5, 7, 10, 15일 간격으로 관수되었다. 관수처리에 따른 소나무 용기묘의 간장과 근원경 생장, 건물생산량을 조사한 결과 가장 좋은 생장 반응은 관수처리 1일 간격에서 가장 높게 나타났다. 관수주기가 짧아질수록 소나무 용기묘의 생장이 좋아졌지만, 전체뿌리길이는 2일이나 1일 관수주기보다 3일에서 더 높게 나타났다. 묘목품질지수의 경우 1일 간격에서 가장 높고 관수주기가 길어질수록 낮아지는 경향을 보였다. 본 연구결과를 종합하면 1~2일 간격의 관수가 소나무 용기묘의 생육에 있어 적합한 것으로 판단된다.

Keywords

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