Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effect of Italian Ryegrass Mixtures on Forage Production and Soil Characteristics in Dry Riverbed of Ansancheon

안산천에서 이탈리안 라이그라스 혼파조합이 사초생산성과 토양 특성에 미치는 영향

  • Kim, Jong Duk (Division of Animal Husbandry, Cheonan Yonam College) ;
  • Ko, Ki Hwan (Department of Golf Course and Horticulture, Keimyung College University) ;
  • Kwon, Chan Ho (College of Animal Science, Kyungpook National University)
  • 김종덕 (천안연암대학 축산계열) ;
  • 고기환 (계명문화대학교 골프코스 원예학부) ;
  • 권찬호 (경북대학교 축산대학)
  • Received : 2014.01.17
  • Accepted : 2014.03.03
  • Published : 2014.03.31
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Abstract

This experiment was carried out to order to determine the forage production and soil characteristics in mixtures of Italian ryegrass (IRG) and annual legumes at the riverbed. The IRG and hairy vetch mixture had the highest in fresh, dry matter (DM) as well as total digestible nutrients (TDN) yields among the forage mixtures. Further IRG and hairy vetch mixture had the highest in DM content. The crude protein (CP) content of IRG and hairy vetch mixture was the highest, Whereas non-fiber carbohydrate (NFC) and TDN contents were lower compared to other mixtures. The total nitrogen (TN) of IRG and hairy vetch mixture was the highest due to high nitrogen fixation in the riverbed soil. The IRG and rape mixture was the highest in organic matter (OM) of soil. Moreover, the available $P_2O_5$ of soil in IRG and crimson clover mixtures was higher compared to other mixtures. Further, the IRG and hairy vetch mixture was the highest in cation exchange capacity (CEC) content. Therefore IRG and hairy vetch mixture is more suitable in forage mixtures due to high forage production and protein as well as high soil CEC content at the riverbed.

하천부지에서 이탈리안 라이그라스(IRG)와 월년생 두과작물을 혼파하여 사초 생산성과 토양 특성을 조사하였다. 안산천 하천부지에서는 이탈리안 라이그라스와 헤어리베치의 혼파조합이 다른 조합보다 생초, 건물 및 수량이 가장 많았다. 이탈리안 혼파조합의 수확 시 건물률도 헤어리베치 조합이 가장 높았다. 혼파조합의 사료가치 비교에서 헤어리베치 조합이 조단백질 함량은 높았으나 TDN 및 비섬유성탄수화물(NFC) 함량은 다른 처리구에 비하여 낮았다. 따라서 질소 고정능력이 우수한 헤어리베치 조합이 다른 조합보다 토양의 전질소(TN) 함량이 높았다. 반면 토양의 유기물 함량은 유채 조합이 가장 높았으며, 토양의 유효인 산 함량은 크림손 클로버 조합이 높았다. 토양의 CEC 함량은 이탈리안 라이그라스와 헤어리베치 조합은 우수하였다. 이상의 결과를 종합해 볼 때 비료를 시용하지 못하는 하천변에서 월동 사료작물을 재배할 때 이탈리안 라이그라스와 헤어리베치의 혼파조합이 다른 혼파조합보다 사초생산성이 높아 토양의 질소와 인 제거에 의한 하천 수질 개선에 효과가 좋은 것으로 판단되었다.

Keywords

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