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Evaluation of Livestock Manure Utilization Rates as Agricultural Purpose in Developed OECD Countries by Using Nutrient Balances

OECD 양분수지를 이용한 축산선진국의 농경지 축산분뇨 이용실태 평가

  • Kim, Pil-Joo (Division of Applied Life Science (BK 21 Program), Graduate School, Gyeongsang National University) ;
  • Lee, Yong-Bok (National Academy of Agricultural Science) ;
  • Lee, Youn (National Academy of Agricultural Science) ;
  • Yun, Hong-Bae (National Academy of Agricultural Science) ;
  • Lee, Kyung-Dong (Department of Oriental Medicine Materials, Dongshin University)
  • Published : 2008.12.31

Abstract

The nitrogen (N) and phosphorus (P) balances in Korea during 1985-2006, which calculated according to the surface balance method of the PARCOM guidelines, continually increased with the lapse of year, and then might keep the highest levels with about $250kg\;N\;ha^{-1}$ and $50kg\;P\;ha^{-1}$ in 2006 among OECD countries. National phosphorus balance of the developed OECD countries (Belgium, Denmark, Germany, The Netherlands) in the livestock feeding industries has significantly decreased, due to limit livestock feeding density and nutrient application level by using strong legislation. However, Korean P balance was not apparent decrease, since the number of livestock feeding heads has been increasing, irrespective with the decrease of chemical fertilizer consumption. Manure P portion to the total P input amount of the above four OECD Countries in nutrient balance has continuously inclined to 60-70%. Therefore, the large portion of livestock manure might be used as nutrient source in agricultural side in these countries. In particular, manure P application levels of Belgium and The Netherlands, which have relatively high P balance and manure P portion to total P input dose, was estimated to be $31-33\;kg\;p\;ha^{-1}$ in 2004, and it was similar level with that of Korea in 2006. The manure P application levels for agricultural purpose has continuously decreased in these two OECD countries. In contrast, our manure P application rate continuously increased, and therefore we need the strong political countermeasure to control livestock feeding density at the resonable level.

OECD 양분수지분석법인 Surface Balance법에 의해 분석된 우리나라의 질소와 인산수지는 1985년 이후 지속적으로 증가하여 2006년 현재 OECD 회원국 중에서 가장 높은 수준인 것으로 예측되었다. 주요 축산 선진국의 질소와 인산수지는 강력한 가축사육두수 및 농경지 양분사용량 제한 법률 등의 운영으로 지속적으로 감소하고 있으나, 우리나라는 화학비료 사용량 감소에도 불구하고 가축사육두수 증가에 의해 상대적으로 높은 수준을 유지하고 있다. 축산선진국인 벨기에, 덴마크, 독일, 네덜란드의 전체 인산투입량에 대한 축산분뇨 유래 인산의 비율이 최근 60-70% 까지 증가하고 있어 농경지 양분의 절대량을 축분뇨에 의존하고 있는 것으로 예측된다. 인산수지와 인산투입량에 대한 축산분뇨의 부하율이 높은 벨기에와 네덜란드의 농경지 축분뇨 인산 시용량은 2004년 $31-33\;kg\;P\;ha^{-1}$로 우리나라와 비슷한 수준이었다. 벨기에와 네덜란드의 농경지 축산분뇨 시용수준은 지속적으로 감소하고 있으나, 우리나라는 지속적으로 증가하고 있어 가축사육두수 조절을 통한 양분수지 저감을 위한 적극적 정책수립이 필요할 것으로 판단된다.

Keywords

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