Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Soil and Leaf Nutrient Properties by Establishment Periods of Chesnut (Castanea crenata Sieb. et. Zucc.) Orchards in Sancheong-gun

경상남도 산청군 밤나무 재배지의 조성 기간에 따른 토양 및 잎 양분 특성

  • Kim, Choon-Sig (Department of Forest Resources, Gyeongnam National University of Science and Technology) ;
  • An, Hyun-Chul (Department of Forest Resources, Gyeongnam National University of Science and Technology) ;
  • Cho, Hyun-Seo (Department of Forest Resources, Gyeongnam National University of Science and Technology) ;
  • Lim, Jong-Taek (Gyeongsangnam-do Forest Environment Research Institute) ;
  • Byun, Jae-Kyeong (Korea Forest Research Institute)
  • 김춘식 (경남과학기술대학교 산림자원학과) ;
  • 안현철 (경남과학기술대학교 산림자원학과) ;
  • 조현서 (경남과학기술대학교 산림자원학과) ;
  • 임종택 (경상남도 산림환경연구원) ;
  • 변재경 (국립산림과학원)
  • Received : 2011.11.20
  • Accepted : 2011.12.16
  • Published : 2011.12.31
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Abstract

Optimum soil management of chestnut orchards is important to ensure high quality and yields of chestnut. This study was conducted to evaluate soil and green leaf characteristics by establishment periods of chestnut (Castanea crenata Sieb. et. Zucc.) orchards in Sancheong-gun, Gyeongsangnam-do. Total 30 plots with the criteria of similar cultivation practices were chosen and classified into two establishment periods by over 20-year-old orchards (17 plots) and below 19-year-old orchards (13 plots). Soil bulk density was significantly higher (p<0.05) in over 20-year-old ($1.16g\;cm^{-3}$) than in below 19-year-old ($1.03g\;cm^{-3}$) plots. Soils in over 20-year-old plots were severely acidified with pH 4.56 compared to pH 4.73 in below 19-year-old plots. However, soil organic matter, total nitrogen, available phosphorus, and potassium were not significantly different (p>0.05) between both establishment periods. Leaf area, leaf mass, and nutrient (N, P, K, Ca, Mg) concentration of green leaves were also not significantly different (p>0.05) between both establishment periods. The results indicate that soil bulk density in chestnut orchards is dependent on the establishment periods, while soil chemical property and leaf nutrient concentration may be little influenced by the establishment periods.

경상남도 산청군 단성면과 신안면의 20년 이상 밤나무재배지 17개소, 19년 이하 재배지 13개소 등 총 30개소를 대상으로 조성 기간에 따른 토양의 물리화학적 특성 및 잎의 형태적 특성과 양분함량을 조사하였다. 토양 물리적 특성 중 토양용적밀도는 20년 이상 재배지가 $1.16g\;cm^{-3}$으로 19년 이하 재배지 $1.03g\;cm^{-3}$에 비해 유의적으로 높았다 (p<0.05). 토양 화학적 특성 중 토양 pH는 20년 이상 재배지의 토양 pH가 4.56으로 19년 이하 재배지 토양 pH 4.73에 비해 토양 산성화가 심하였으나 유기물, 전질소, 유효인산, 칼륨 함량은 조성 기간에 따른 차이가 나타나지 않았다 (p>0.05). 또한, 잎 면적, 잎 건중량, 잎 내 질소, 인, 칼륨, 칼슘, 마그네슘 함량도 조성 기간 사이에 차이가 없었다. 본 연구 결과에 따르면 밤나무재배지의 토양특성 중 조성 기간은 토양용적밀도 같은 물리적 특성에 변화를 초래하지만 토양 화학적 특성과 잎 양분함량에 미치는 영향은 크지 않는 것으로 나타났다.

Keywords

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