Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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Effect of Organic Materials Use Recommendation System on Soil N Mineralization and Rice Productivity in Organic Paddy

유기자원 사용처방 기준 적용에 따른 토양 질소 무기화 및 유기 벼 생산성

  • Lee, Cho-Rong (Organic Agriculture Division, National Institute of Agricultural Science) ;
  • Lee, Sang-min (Organic Agriculture Division, National Institute of Agricultural Science) ;
  • Hwang, Hyeon-Yeong (Organic Agriculture Division, National Institute of Agricultural Science) ;
  • Kwon, Hyeok-Gyu (Organic Agriculture Division, National Institute of Agricultural Science) ;
  • Jung, Jung A (Organic Agriculture Division, National Institute of Agricultural Science) ;
  • An, Nan-Hee (Organic Agriculture Division, National Institute of Agricultural Science)
  • 이초롱 (국립농업과학원 유기농업과) ;
  • 이상민 (국립농업과학원 유기농업과) ;
  • 황현영 (국립농업과학원 유기농업과) ;
  • 권혁규 (국립농업과학원 유기농업과) ;
  • 정정아 (국립농업과학원 유기농업과) ;
  • 안난희 (국립농업과학원 유기농업과)
  • Received : 2021.04.30
  • Accepted : 2021.06.10
  • Published : 2021.06.30
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Abstract

This study was conducted to evaluate the field application of the developed recommendation system in organic rice (Oriza sativa L.) paddy and to investigate the mineral nitrogen content in soil and rice productivity. According to the developed system, hairy vetch (HV), rye+rapeseed oil cake (R+OC), rapeseed oil cake (OC) for only basal fertilization (OC-B), OC for split application (OC-S), pig manure compost (PMC), and chemical fertilizer (CHM) were applied to paddy soil at the rate of 107~133 kg N/ha. Results were followed, unhulled rice yield of OC-S (111%), OC-B (110), R+OC (106), HV (101), and PMC (96) were no significantly different with CHM (100). Also there was positive correlation (R2=0.803*) between unhulled rice yield and cumulative inorganic N in soil. For nitrogen use efficiency of rice, OC-B, OC-S, and R+OC were not significantly different with CHM. In conclusions, the developed organic materials use recommendation system was effective for organic rice productivity. It could be useful for organic farmer to apply the organic materials use recommendation system for rice.

본 연구는 질소무기화 특성을 고려하여 개발된 유기자원 시비처방 시스템의 현장적용 가능성을 평가하기 위하여, 유기 논에서 토양 무기태질소 함량과 벼(Oriza sativa L.) 생산성을 비교하였다. 표준시비량에 준하여 동일 질소량으로 자재를 처리한 2015, 2016년과 달리, 2017년은 유기자원 시비처방 시스템 적용으로 헤어리베치(HV), 호밀+유박(R+OC), 유박 기비(OC-B), 유박 분시(OC-S), 돈분퇴비(PMC), 화학비료(CHM)의 질소 투입량이 107~133 kg/ha로 상이하였다. 처리별로 유기자원 시비처방 시스템을 적용하여 벼를 재배한 결과, 정조 수량은 유박 분시(111%), 유박 기비(110), 호밀+유박(106), 헤어리베치(101), 돈분퇴비(96) 모두 화학비료(100)와 유시한 수준을 보였다. 또한, 정조 수량과 토양 내 누적 무기태질소 함량은 정의 상관관계(R2=0.803*)를 보였다. 유박 처리구(OC-B, OC-S, R+OC)의 작물 질소이용률은 화학비료와 통계적으로 유의한 차이를 보이지 않았다. 결론적으로, 개발된 유기자원 시비처방 시스템은 유기 벼 생산에 효과적이었으며, 해당 시스템이 유기 벼 재배 현장에서 유용하게 활용될 것으로 판단된다. 또한 추후 시스템 적용 대상을 다양한 밭작물을 대상으로 확대할 필요성이 있을 것으로 보인다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 국립농업과학원 농업과학기술 연구개발사업(과제번호: PJ010865022017)의 지원에 의해 이루어진 것임.

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