Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Long-term Composting and Fertilization Impact on Dehydrogenase-producing Bacteria and Dehydrogenase Activity in Rice Paddy Soil

동일비료 장기연용 논토양의 탈수소효소 생성균과 효소활성

  • Suh, Jang-Sun (National Institute of Agricultural Science & Technology, RDA) ;
  • Kim, Su-Jung (National Institute of Agricultural Science & Technology, RDA) ;
  • Noh, Hyung-Jun (National Institute of Agricultural Science & Technology, RDA) ;
  • Kwon, Jang-Sik (National Institute of Agricultural Science & Technology, RDA) ;
  • Jung, Won-Kyo (National Institute of Agricultural Science & Technology, RDA)
  • Received : 2007.01.20
  • Accepted : 2007.06.27
  • Published : 2007.08.28
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Abstract

A long-term rice paddy field, which is located in the National Institute of Crop Science (Suwon city, Korea) has been managed for studying of fertilization and composting impact on paddy soil fertility since 1954. The objective of this research was to evaluate soil quality through dehydrogenase analysis in long-term paddy soil treatment plots, such as control, N fertilization (N), NPK fertilization (NPK), and rice straw compost with NPK (CNPK). Dehydrogenase-producing bacterial population developing red-colored triphenyl formazan (TPF) was highly correlated to the dehydrogenase activity in rice paddy soils sampled prior to waterlog. The dehydrogenase-producing bacterial population and dehydrogenase activity was comparatively high in plots of NPK, and CNPK, which organic matter content was relatively high.

탈수소효소(Dehydrogenase)생성균과 탈수소효소활성의 논토양 건전성평가 생물지표로서의 기능을 평가하고자, 동일 비료 장기연용 논토양의 무처리구, 질소시용구 (N), 화학비료시용구 (NPK), 그리고 퇴비와 화학비료 혼합시용구 (CNPK)를 대상으로 담수전에 시료를 채취하여 탈수소효소를 분비하는 세균과 Bacillus 그리고 탈수소효소활성을 조사하였다. 논토양의 탈수소효소활성은 유기물함량이 비교적 높고 유효인산 많은 화학비료시용구(NPK) 및 퇴비와 화학비료 혼합시용구(CNPK)에서 높은 경향이었다. 토양의 탈수소효소생성균 밀도와 탈수소효소활성간에는 유의성이 높은 정의 상관관계를 보였다.

Keywords

References

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