KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Cation and Nitrogen Contents, and Growth of Soybean against Underground Water Level at Reproductive Stage

생식생장기에 지하수위 처리가 콩의 생육과 질소 및 몇가지 양이온 함량에 미치는 영향

  • Park, Gwan-Soo (Collage of Agriculture and life science, Chungnam National University) ;
  • Ahn, Tae-Hwan (Collage of Agriculture and life science, Chungnam National University) ;
  • Cho, Jin-Woong (Collage of Agriculture and life science, Chungnam National University)
  • 박관수 (충남대학교 농업생명과학대학) ;
  • 안태환 (충남대학교 농업생명과학대학) ;
  • 조진웅 (충남대학교 농업생명과학대학)
  • Published : 2009.06.30
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Abstract

This study was conducted to response the growth, seed yield, nitrogen content and different cation content of two soybean, flooding-tolerant cv. Pungsannamulkong (PNSK) and flooding-sensitive cv. Tawonkong (TWK) when these were subjected to flooding stress at R1 stage for cultivation in paddy field. Flooding, underground water levels (UWL) of 0 cm, 10 cm and 40 cm, was experimented from flowering time to harvest time. The dry matter and seed yield of soybean with UWL of 0 or 10 cm declined in comparison with UWL of 40 cm and these were more reduction in TWK than in PNSK. The amount of nitrogen uptake decreased in higher UWL and there was a high significant relationship $(R^2=0.872)$ between nitrogen content and seed yield at flooding stress. K content of leaf and stem in soybean plants had a small change with UWL but Ca content had a decrease (leaf and stem) or increase (root). Mn and Fe content were increased at higher UWL and were more in TWK than in PNSK.

본 연구는 생식생장기의 습해에 의한 콩 수량과 질소 및 여러 가지 양분흡수에 미치는 영향을 알고자 지하수위를 0 cm, 10 cm 및 40 cm로 달리하여 조사하였다. 지하수위가 높음에 따라 생육과 수량은 감소되었으며 다원콩의 감소정도가 풍산나물콩보다 더 크게 나타났다. 질소흡수량은 지하수위가 높을수록 감소되었으며 수량과의 상관관계는 $R^2=0.872$로 고도로 유의한 정의상관을 보였다. K함량은 지하수위 높이에 큰 차이를 보이지 않았으며(뿌리 제외), Ca함량은 감소(잎, 줄기) 또는 증가(뿌리)하였지만 Mn과 Fe 함량은 지하수위가 높을수록 급격히 증가하였으며 다원콩이 풍산나물콩보다 높은 함량을 보였다.

Keywords

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