Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Organic Rice (Oryza sativa L.) Production in Eco-friendly Complex using Gelatin·Chitin Microorganisms

친환경 광역단지 내 젤라틴·키틴분해미생물을 이용한 유기 벼 생산

  • 최승희 (전남대학교 농업생명과학대학 농화학과 친환경농업연구소) ;
  • 차광홍 (전남대학교 농업생명과학대학 농화학과 친환경농업연구소) ;
  • 서동준 (전남대학교 농업생명과학대학 농화학과 친환경농업연구소) ;
  • 박흥규 (전라남도농업기술원 식량작물연구소) ;
  • 권오도 (전라남도농업기술원 식량작물연구소) ;
  • 안규남 (전라남도농업기술원 식량작물연구소) ;
  • 이재학 (전라남도 나주시 광역친환경농업단지조합 공동사업법인) ;
  • 김길용 (전남대학교 농업생명과학대학 농화학과 친환경농업연구소) ;
  • 정우진 (전남대학교 농업생명과학대학 농화학과 친환경농업연구소)
  • Received : 2018.07.10
  • Accepted : 2018.09.27
  • Published : 2018.11.30
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Abstract

This study was carried out to investigate the economic value of organic rice production using gelatin chitin microorganisms in eco-friendly complex, Gongsan, Naju city. The soil condition of experiment paddy field was Jeonbuk series and silt loam with a slightly poor drainage. Except for the high effective silicate, the chemical characteristics of soils used were included in the optimum range of paddy soils in Korea. In growth, plant length, tiller number, ear number, and ear length were observed to be higher in conventional paddy fields than organic paddy fields. However, number of grain per panicle and grain filling ratio (%) were higher in organic paddy fields than conventional paddy fields. Incidences of diseases and insect pests were slightly higher in the organic paddy fields. Water weevil, sheath blight, rice leaf roller and rice blast were more occurred in organic paddy field. On the other hand, false smut was higher occurred in conventional paddy field. There was a significant negative correlation between rice sheath blight and rice leaf roller, and rice yield. In the milled rice quality, the quality of organically cultivated milled rices was lower by the increase of broken rice than that of conventionally cultivated milled rices. The quality and palatability of rice were higher in organic cultivation with decreasing of protein content. Net income of conventionally and organically cultivated rice was 360,000 won/10a and 610,000 won/10a, respectively. Premium net income of the organically cultivated rice was 68%.

1. 유기재배구의 토양조건은 배수가 약간 불량한 미사질 양토인 전북통 보통답으로 유효규산이 높은 것을 제외하고는 우리나라 논토양의 화학적 성분과 평균 함량이 유사하였다. 2. 관행재배구와 유기재배구 간에 생육은 초장, 분얼수, 이삭수, 이삭길이 모두 관행재배구에서 높은 것을 확인하였으며 이삭당 입수와 등숙율은 유기재배구에서 다소 높게 나타났다. 3. 병해충 발생정도는 물바구미, 잎집무늬마름병, 혹명나방, 도열병이 유기재배구에서 많이 발생하였고, 이삭누룩병은 관행재배구에서 조금 더 많이 발생하였다. 4. 주요 관리대상 병해충인 잎집무늬마름병(y=-0.2848x+199.57, $R^2=0.704^*$), 혹명나방 발생(y=-0.1361x+92.535, $R^2=0.8049^*$)과 쌀 수량과의 관계에서 유의성이 높은 부의 상관관계가 나타났다. 5. 백미 품질은 유기재배구에서 파쇄미의 증가로 완전립 비율이 낮았지만, 단백질함량이 관행재배구에 비해 낮아 전반적인 품질 및 윤기치가 높아졌다. 6. 쌀 재배 순수익은 관행재배구에서 36만원/10a, 유기재배구에서 61만원/10a로 유기재배구의 순수익이 68% 높게 나타났다.

Keywords

References

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