Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Application Amount of Anaerobic Digestion Waste Water from Methane Fermentation of Pig Manure on Rice

벼에 대한 돈분뇨 혐기성 소화액비의 시용적량 구명

  • Lim, Dong-Kyu (National Institute of Agricultural Science & Technology) ;
  • Park, Woo-Kyun (National Institute of Agricultural Science & Technology) ;
  • Kwon, Soon-Ik (National Institute of Agricultural Science & Technology) ;
  • Nam, Jae-Jak (National Institute of Agricultural Science & Technology) ;
  • Lee, Sang-Beom (National Institute of Agricultural Science & Technology)
  • 임동규 (농업과학기술원 환경생태과) ;
  • 박우균 (농업과학기술원 환경생태과) ;
  • 권순익 (농업과학기술원 환경생태과) ;
  • 남재작 (농업과학기술원 환경생태과) ;
  • 이상범 (농업과학기술원 환경생태과)
  • Published : 2002.12.31
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Abstract

This study was carried out to evaluate the proper application amount of anaerobic digestion waste water and the environmental influence on rice. The waste water collected after methane fermentation process of pig manure was used as a liquid manure. Liquid manure 100%+chemical fertilizer 30%(LM 100%+CF 30) treatment was the most favorable at all growth stages of rice. The LM 100%+CF 30% treatment was applied to 100% amount of liquid manure which was correspond to the same amount of nitrogen for the standard application amount on rice, with adding 30% amount of chemical fertilizer(urea) at tillering stage. The yields of rice in the treatments of 100%(LM 100%) and 150% amount(LM 150%) of liquid manure were similar or a little higher than NPK treatment but LM 100%+CF 30% treatment was less than the NPK treatment due to the increase of straw weight and plant lodging. In periodic changes of the $NH_4-N$ and $NO_3-N$ contents, the LM 70%+CF 30% treatment in paddy soil was the highest in all treatments. The NPK and the LM 100% treatments in irrigation water quality were higher than other treatments. In infiltration water quality, $NH_4-N$ content was leached out much in the LM 150% treatment and $NO_3-N$ content was in the LM 100%+CF 30% treatment. The proper application amount of anaerobic digestion waste water as a liquid manure must be to analyse the nitrogen content of the waste water and to apply the same amount of nitrogen for the standard application amount on rice.

가축분뇨를 혐기성소화하여 메탄가스를 생산하고 난 다음 혐기성 소화액비를 비료자원으로 활용하기 위하여 농가포장에서 액비의 시용적량을 구명하였다. 벼 생육상황은 액비 100%+화학비료구가 전 시기를 통해 가장 양호하였으며, 그 다음으로 표준시비구가 분얼기에만 양호하였으나 그 이후에는 표준시비구 액비 100%구 및 액비 150%구 간에는 서로 차이가 없었다. 시기별 식물체중 전질소함량은 분얼기 및 출수기에는 추비의 영향으로 표준시비구가, 유수형성기에는 액비 100%+화학비료구가 높았다. 벼 수량은 액비 100% 및 150%구들이 표준시비구와 비슷하거나 약간 증수되었으며, 액비 100%+화학비료구는 고중의 증가 및 도복으로 인하여 표준시비구보다 수량이 오히려 약간 낮았다. 수확기 질소흡수량은 표준시비구가 가장 높았고, 시비질소 효율은 액비 100%구에서, 시비질소 이용율은 액비 100%+화학비료구에서 높았다. 시기별 토양중 $NH_4-N$ 및 $NO_3-N$함량 변화는 액비 100%+화학비료구가 타 처리구보다 높았다. 시기별 관개수 중 $NH_4-N$ 및 $NO_3-N$함량 변화는 분얼비의 영향으로 급격히 증가하였다가 급격히 감소하였는데, 증가한 시기에는 표준시비구 및 액비 100%+화학비료구가 가장 높았다. 시기별 침투수 중 $NH_4-N$함량 변화는 액비 150%구들에서 많이 용탈되었고, $NO_3-N$ 함량은 액비에 화학비료를 추비한 구들에서 많이 용탈되었다. 혐기성 소화액비는 액비 중의 질소성분을 분석하여서 표준시비량의 질소성분에 맞추어 시용하여야 한다.

Keywords

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