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Container Types Influence Chamaecyparis obtusa Seedling Growth During Nursery Culture

시설양묘과정에서 용기에 따른 편백 유묘의 생장 특성 변화

  • Cho, Min Seok (Forest Practice Research Center, Korea Forest Research Institute) ;
  • Yang, A-Ram (Forest Practice Research Center, Korea Forest Research Institute) ;
  • Hwang, Jaehong (Forest Practice Research Center, Korea Forest Research Institute)
  • 조민석 (국립산림과학원 산림생산기술연구소) ;
  • 양아람 (국립산림과학원 산림생산기술연구소) ;
  • 황재홍 (국립산림과학원 산림생산기술연구소)
  • Received : 2014.06.09
  • Accepted : 2014.08.27
  • Published : 2014.12.31

Abstract

The purpose of this study was to evaluate the effects of container types on seedling growth of Chamaecyparis obtusa (2-year-old) in the container nursery culture. We used three container types [20 cavities (400 mL/cavity, $150seedlings/m^2$), 24 cavities (320 mL/cavity, $200seedlings/m^2$), and 35 cavities (240 mL/cavity, $260seedlings/m^2$)] and measured root collar diameter (RCD), height, biomass, root density and seedling quality index (SQI). The RCD, height, biomass, root density and SQI were the highest at 20 cavities/tray because this container has the largest volume and lowest seedling density. However, H/D and T/R ratio at all container types were not significantly different. The total biomass per unit area ($m^2$) were the lowest at 35 cavities/tray and those at both 20 and 24 cavities/tray were not significantly different. Container volume was positively correlated with RCD, height, biomass, root density and SQI except for H/D and T/R ratio, while seedling density negatively affected on them. Based on these results, 20 cavities/tray are optimal for container seedling production of C. obtusa. Usage of optimal container will make us get better quality seedlings and reduction of production costs in the container nursery as well as good field performances with higher survival rate in plantation.

본 연구는 시설양묘과정에서 편백 용기묘(2-0묘) 생산을 위해 요구되는 적정 용기의 구 용적 및 생육밀도를 구명하고자 수행하였다. 용기 20구(400 mL/구, 150본/$m^2$), 24구(320 mL/구, 200본/$m^2$), 35구(240 mL/구, 260본/$m^2$)에서 편백의 근원경, 간장, 생체량, 뿌리밀도 및 묘목품질지수를 조사 분석하였다. 용기에 따른 근원경, 간장, 생체량, 뿌리밀도 및 묘목품질지수는 20구 용기에서 유의적으로 가장 높은 값을 보였지만, H/D율과 T/R률은 용기에 따른 차이가 없었다. 단위 면적 당 총 물질생산량은 35구에서 가장 낮았으며, 20구와 24구 용기에서는 유의적 차이가 없었다. 또한, H/D율과 T/R률을 제외한 근원경, 간장, 물질생산량, 뿌리밀도 및 묘목품질지수는 용기 구 용적과는 정의상관관계, 생육밀도와는 부의 상관관계를 보였다. 본 결과를 바탕으로 시설양묘 단계에서 편백 2-0묘는 20구(400 mL/구, 150본/$m^2$) 용기가 적정 규격으로 판단된다. 편백 2-0묘 생산을 위한 적정 용기의 선정으로 우량 묘목 생산 및 경제적 비용 절감 효과와 함께 우수한 조림 성과를 거둘 수 있을 것으로 기대된다.

Keywords

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