Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Topographical Chemical Properties of Paddy Soils in Gyeongnam Province

경남지역 논토양 지형과 화학성의 관계

  • Lee, Young-Han (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Sonn, Yeon-Kyu (National Academy of Agricultural Science, RDA) ;
  • Lee, Seong-Tae (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Heo, Jae-Young (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Kim, Min-Keun (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Kim, Eon-Seok (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Song, Won-Doo (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Zhang, Yong-Sun (National Academy of Agricultural Science, RDA) ;
  • Jeon, Weon-Tai (National Institude of Crop Science, RDA) ;
  • Ok, Yong-Sik (Biochar Research Center, Department of Biological Environment, Kangwon National University)
  • Received : 2012.02.15
  • Accepted : 2012.03.09
  • Published : 2012.04.30
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Abstract

Sustainable agriculture requires reliable information on the spatial distribution of the soil chemical properties for effective management of paddy fields. In order to provide adequate soil nutritional information for environmental-friendly agriculture, we investigated the soil chemical properties for 260 paddy soils sampled in Gyeongnam Province from 1999 to 2011 by four years of interval. Soil chemical properties of pH, organic matter, available phosphate and silicate, exchangeable potassium, calcium, and magnesium contents were analyzed. The pH value, organic matter, available phosphate and silicate, and exchangeable calcium and magnesium in paddy soils were significantly elevated in 2011 compared to 1999. The excessive levels of organic matter and available phosphate in paddy soils were detected in 2011. The soil available phosphate was highest in mountain foot-slope (p<0.05) and the soil organic matter was highest in diluvial terrace (p<0.05). It revealed that the soil available phosphate was the responsible factor for the differentiation of soil chemical properties by the topography in paddy soils.

경남지역 논토양의 양분관리를 위한 기초자료를 제공하기 위해 260 지점의 화학성분 변동을 1999년부터 2011년까지 4년 주기로 분석하였다. 논토양 pH, 유기물 함량, 유효인산 함량, 유효규산 함량, 치환성 칼슘 및 마그네슘 함량은 1999년에 비해 2011년에 유의적으로 증가하였다. 유기물 함량의 초과비율은 1999년 40.0%, 2003년 30.4%, 2007년 48.5%, 2011년 50.8%로 증가하였다. 유효인산 함량의 초과비율은 1999년 55.0%, 2003년 57.7%, 2007년 52.7%, 2011년 63.5%로 2배 이상 과잉 집적되었다. 유기물 함량은 홍적대지에서 가장 높았고 유효인산 함량은 산록경사지에서 가장 높았다. 논토양의 통계분석과 주성분 분석을 통하여 경남지역 논토양의 유효인산 함량은 지형별 화학특성을 구별할 수 있는 중요인자로 판단되었다.

Keywords

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