Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Nutrient Value and Yield Response of Forage Crop Cultivated in Reclaimed Tidal Land Soil Using Anaerobic Liquid Fertilizer

간척지 토양에서 혐기소화액비 시용에 따른 사료작물의 생산성과 사료가치 평가

  • 신국식 (한경대학교 기후변화연구센터) ;
  • 황원재 (한경대학교 기후변화연구센터) ;
  • 이승헌 (한국농어촌공사 농어촌연구원) ;
  • 김창현 (한경대학교 바이오가스연구센터) ;
  • 윤영만 (한경대학교 바이오가스연구센터)
  • Received : 2012.10.22
  • Accepted : 2012.12.23
  • Published : 2012.12.31
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Abstract

This study was carried out to investigate the nutrient value and yield response of corn, barley, and sudangrass by the application of anaerobic liquid fertilizer in two tidal land soil in order to design the resource recycling agricultural system between livestock and forage crop cultivation in a environment friendly agricultural region. Forage crop yields at reclaimed tidal soil during were at the level of 64~76% comparing with forage crop yields at upland soil in the cropping system of corn, barley, and sudangrass. And yields of forage crops were in the order of barley > corn > sudangrass in the cultivated cropping system for 2 year. Relative feed values (RFVs) of forage crops were 88%~106% for corn, 90%~111% for barley, and 91%~113% for sudangrass, and the carrying capacity of beef cattle (Hanwoo) was 5.8~8.6 head/year/ha for the corn-barley cropping system of one year, and 4.8~6.7 head/year/ha for the barley-sudangrass cropping system of one year. Also, carrying capacity of beef cattle (Hanwoo) was highest in the application level of anaerobic liquid fertilizer 200%.

본 연구는 간척농경지에 경 축 순환단지 구축을 목적으로 2년 3작기 작부체계로 혐기소화액비를 시용하고 사료작물 재배를 실시하여 수량반응과 사료가치분석을 하였으며, 이를 토대로 연간 한우 사육 용량을 추정 하였다. 2년 3작기 동안의 사료작물의 생산성은 전체 혐기소화액비 시비구에서 대조토양에 비해 간척지 토양에서 약 64~76% 수준을 보였으며, 사료 작물별 수확량은 보리 > 옥수수 > 수단그라스 순으로 나타났다. 사료작물의 상대적 사료가치(RFV)는 옥수수가 88~106%, 청보리는 90~111%, 수단그라스는 91~113%이었으며, 한우의 사육용량을 추정 하였을 때 1년 2작기 옥수수-청보리 작부체계에서 5.8~8.6 두/년/ha, 청보리-수단그라스 작부체계에서는 4.8~6.7 두/년/ha로 추정되었고, 혐기소화액비 시비율 200% 처리구에서 가장 높은 연간 한우 사육용량을 보였다. 따라서 결론적으로 간척지토양 같은 조건 불리지라 하더라도 가축분뇨액비를 시용하여 사료작물을 재배하는 것은 생초수량은 감소하였지만 연간한우 사육용량과 사료가치 면에서 크게 뒤지지 않는 결과를 보여 주었다.

Keywords

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