한국유기농업학회지 (Korean Journal of Organic Agriculture)

  • 제25권1호
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  • Pages.85-99
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  • 2017
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  • 1229-3571(pISSN)
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  • 2287-819X(eISSN)
한국유기농업학회 (Korean Association of Organic Agriculture)
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녹비작물의 예초시기와 예초높이가 무농약 배 과원의 양분공급력에 미치는 영향

Ability to Supply Macro-nutrients as Affected by Time and Height of Mowing of Ground Cover Crops on a Pesticide-free Pear Orchard

  • 임경호 (전라남도농업기술원 원예연구소) ;
  • 김현지 (전라남도농업기술원 친환경농업연구소) ;
  • 김병삼 (전라남도농업기술원 과수연구소) ;
  • 황인택 (전라남도농업기술원 원예연구소) ;
  • 손동모 (전라남도농업기술원 원예연구소) ;
  • 김효중 (전라남도농업기술원 원예연구소) ;
  • 정석규 (대구가톨릭대학교 원예학과) ;
  • 최현석 (대구가톨릭대학교 원예학과)
  • 투고 : 2016.09.06
  • 심사 : 2016.12.26
  • 발행 : 2017.02.28
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초록

9년생 '신고'배(Pyrus pyrifolia Nakai)나무 과원에서 화학비료 대체 기술을 확립하고자 녹비작물의 예초시기와 예초높이에 따른 무기성분의 환원량을 2009년에 비교하였다. 호밀과 헤어리베치를 2008년 가을에 혼파하여 예초시기를 기준으로 총 4가지 처리를 포함하였다. 4월 18일에 1차 예초와 5월 28일에 2차 예초 한 것을 4월 18일+5월 28일 예초 처리구로 설정하였고, 4월 28일+6월 8일 예초, 5월 8일+6월 18일 예초, 4월 18일+5월 18일+6월 18일 예초처리를 시험에 이용하였다. 예초높이 처리는 $3{\pm}1cm$, $7{\pm}1cm$, $13{\pm}1cm$ 높이에서 4월 18일과 6월 8일에 각각 예초한 것을 포함하였다. 예초 시기별 처리에서, 5월 8일+6월 18일 예초처리가 녹비작물과 자연초종의 건물중 생산량이 ha당 14,480 kg으로 가장 높았고, 이에 따라 토양에 환원되는 전질소와 칼륨도 ha당 각각 292 kg과 396 kg으로 가장 높았다. 예초 높이 처리에서는 $7{\pm}1cm$ 처리에서 녹비작물과 자연초종의 건물중 생산량이 ha당 11,970 kg으로 가장 낮아서 전질소와 인산, 그리고 칼륨이 ha당 각각 265 kg, 111 kg, 333 kg으로 가장 낮았다. 녹비작물 처리는 예초방법에 상관없이 토양의 유기물 함량을 다소 증가시켰던 것으로 관찰되었다.

The study was compared for ability to supply macro-nutrients between time and height of mowing to establish alternate technique of a chemical fertilizer with 9-year old 'Niitaka' pear (Pyrus pyrifolia Nakai) trees in a pesticide-free orchard in 2009. Rye and hairy vetch were sown together during fall 2008. Four types of mowing time treatments were included; mowing on April 18+May 28, on April 28+June 8, on May 8+June 18, and on April 18+May 18+June 18. Mowing height treatment included mowing at $3{\pm}1cm$, $7{\pm}1cm$, and $13{\pm}1cm$ on April 18 or June 8. Mowing on May 8+June 18 increased the most dry weight of ground cover and vegetation to 14,480 kg per ha among the mowing time treatments, resulting in the greatest production of T-N (total nitrogen; 292 kg) and K (396 kg) per ha on the soil. Mowing at $7{\pm}1cm$ decreased the most dry weight of ground cover and vegetation to 11,970 kg per ha among the mowing height treatments, resulting in the lowest production of T-N (265 kg), P (111 kg) and K (333 kg) per ha in a soil. Ground cover treatments increased soil organic matter contents, regardless of mowing treatment methods.

키워드

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