한국토양비료학회지 (Korean Journal of Soil Science and Fertilizer)

  • 제49권6호
  • /
  • Pages.655-661
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  • 2016
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  • 0367-6315(pISSN)
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  • 2288-2162(eISSN)
한국토양비료학회 (Korean Society of Soil Science and Fertilizer)
권호 표지
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Hydraulic Characteristics of Arable Fields in Korea and Applicability of Pedotransfer Functions

  • Jung, Kangho (Division of Soil and Fertilizer, National Academy of Agricultural Science) ;
  • Sonn, Yeonkyu (Division of Soil and Fertilizer, National Academy of Agricultural Science) ;
  • Hur, Seungoh (Division of Agro-Materials Safety Evaluation, National Academy of Agricultural Science) ;
  • Han, Kyunghwa (Division of Soil and Fertilizer, National Academy of Agricultural Science) ;
  • Cho, Heerae (Division of Soil and Fertilizer, National Academy of Agricultural Science) ;
  • Seo, Mijin (Division of Soil and Fertilizer, National Academy of Agricultural Science) ;
  • Jung, Munho (Institute of Mine Reclamation Technology, Mine Reclamation Corporation) ;
  • Choi, Seyeong (Extension Planning Division, Gyeongsangbuk-do Agricultural Research & Extension)
  • 투고 : 2016.09.30
  • 심사 : 2016.11.08
  • 발행 : 2016.12.31
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초록

Relationships between saturated conductivity (Ks) and separate contents were evaluated from 44 soil series of arable lands: 18 for paddy fields and 26 for upland crop fields. Saturated hydraulic conductivities of A, B, and C horizons were determined with tension infiltrometer and Guelph permeameter in situ. Sand, silt, clay, and organic matter content of each horizon were analyzed. Based on correlation analysis, sand separate had a positive relationship with Ks for both paddy (r=0.27, p=0.017) and upland fields (r=0.24. p=0.030). Clay content had a negative relationship with Ks for paddy soils (r=-0.32, p=0.005) while significant correlation between them was not found for upland crop fields (r=-0.20, p=0.07). Organic matter content showed a positive relationship with Ks only for upland crop fields (r=0.33, p=0.002). Due to low correlation coefficients between separate contents and Ks, performance of pedotransfer functions was not enough to estimate Ks. It implies that hydraulic properties of arable lands were affected by other factors rather than particle characteristics. Platy structure and plow pan were suggested to limit Ks of paddy fields. Soil compaction and diversity of parent materials were proposed to influence Ks of upland crop fields. It suggests that genetic processes and artificial managements should be included in pedotransfer functions to estimate hydraulic properties appropriately.

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참고문헌

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