Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
권호 표지

Growth of Chinese Cabbage and Losses of Non-point Sources from Runoff and Leaching in Soils as Affected by Anaerobically Digested Liquid Pig Slurry

혐기소화 돈분 액비를 처리한 토양에서 배추의 생육과 비점오염원의 용탈 및 유거

  • Ro, Hee-Myong (Department of Agricultural Biotechnology, Seoul National Univerisity) ;
  • Choi, Hyo-Jung (Department of Agricultural Biotechnology, Seoul National Univerisity) ;
  • Yun, Seok-In (Department of Agricultural Biotechnology, Seoul National Univerisity) ;
  • Lee, Min-Jin (Department of Agricultural Biotechnology, Seoul National Univerisity) ;
  • Kim, Jae-Min (Department of Agricultural Biotechnology, Seoul National Univerisity) ;
  • Choi, Hong-Lim (Department of Agricultural Biotechnology, Seoul National Univerisity) ;
  • Kun, Zhu (Department of Agricultural Biotechnology, Seoul National Univerisity)
  • 노희명 (서울대학교 농생명공학부) ;
  • 최효정 (서울대학교 농생명공학부) ;
  • 윤석인 (서울대학교 농생명공학부) ;
  • 이민진 (서울대학교 농생명공학부) ;
  • 김재민 (서울대학교 농생명공학부) ;
  • 최홍림 (서울대학교 농생명공학부) ;
  • Received : 2007.12.10
  • Accepted : 2008.01.25
  • Published : 2008.04.30
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Abstract

A pot experiment was conducted to study the effect of application rate of anaerobically digested pig slurry on the growth of Chinese cabbage and the outflow characteristics of N and P from leaching and runoff in the upland. Anaerobically digested pig slurry(ADPS) was applied rates of 0, 6, 12, and $18L\;pot^{-1}$, and Chinese cabbages were grown for 50 days. Dry matter yield of Chinese cabbage increased significantly at the rates of 6 and $12L\;pot^{-1}$, but decreased at the rate of $18L\;pot^{-1}$ due probably to the high salinity. The EC(1:5) of the soil receiving $18L\;pot^{-1}$ of anaerobically digested pig slurry was $0.28dS\;m^{-1}$, which was significantly higher than those receiving 6 and $12L\;pot^{-1}$ of anaerobically digested pig slurry. For the leachate and runoff, N and P concentration increased with the application rate of ADPS. Therefore, considering the dual goal of optimum crop growth and minimal discharge of non-point pollution sources to water system, this study suggests that a testing of a site-specific proper application rate of liquid pig slurry including ADPS is prerequisite to achieving optimum agricultural productivity while minimizing water quality degradatio.

돈분액비의 처리량이 배추 건중량 및 질소와 인의 이용률, 그리고 유거와 용탈에 의한 질소와 인의 유출 특성에 미치는 영향을 구명하기 위해 포트실험을 하였다. 작물은 토양에 돈분액비를 0, 6, 12, $18L\;pot^{-1}$ 처리한 후 50일 동안 재배하였다. 돈분액비 시비에 의해 배추의 건중량은 증가하였고 $12L\;pot^{-1}$ 처리하였을 경우 가장 크게 증가하였다. 그러나 돈분액비를 $18L\;pot^{-1}$ 처리하였을 경우 배추 건중량은 감소하였다. 이는 돈분액비의 과다시비로 토양의 염도가 증가했기 때문이라고 판단된다. 돈분액비를 $18L\;pot^{-1}$로 처리한 토양의 EC(1:5)는 $0.28dS\;m^{-1}$로 다른 처리구보다 유의적으로 높았다. 용탈수와 유거수에서 질소와 인의 농도는 돈분액비의 시비량이 증가함에 높아졌다. 작물의 생육을 증가시키면서 수계로의 비점오염원의 유출을 최소화하는 것을 고려할 때, 본 연구는 돈분액비를 농업적으로 이용하기 위해서는 작물과 지역의 특성을 고려한 적절한 시비량을 설정하는 것이 필요하다고 제안한다.

Keywords

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