Journal of the Korean Society of International Agriculture (한국국제농업개발학회지)

The Korean Society of International Agriculture (한국국제농업개발학회)
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On-Farm Study of the System of Rice Intensification (SRI) of Rainfed Lowland in Southern Cambodia

캄보디아 남부 천수답지역의 벼 집약관리재배 시스템(SRI)에 대한 현장 연구

  • Lee, Yun-Ho (Crop physiology and production, National Institute of Crop Science, Rural Development Administration) ;
  • Seo, Myung-Chul (Crop physiology and production, National Institute of Crop Science, Rural Development Administration) ;
  • Cho, Jung-Il (Crop physiology and production, National Institute of Crop Science, Rural Development Administration) ;
  • Cho, Hyeoun-Suk (Crop physiology and production, National Institute of Crop Science, Rural Development Administration) ;
  • Kim, Jun-Hwan (Crop physiology and production, National Institute of Crop Science, Rural Development Administration) ;
  • Shin, Pyong (Crop physiology and production, National Institute of Crop Science, Rural Development Administration) ;
  • Baek, Jae-Kyeong (Crop physiology and production, National Institute of Crop Science, Rural Development Administration) ;
  • Sang, Wan-Gyu (Crop physiology and production, National Institute of Crop Science, Rural Development Administration)
  • 이윤호 (농촌진흥청 국립식량과학원 작물재배생리과) ;
  • 서명철 (농촌진흥청 국립식량과학원 작물재배생리과) ;
  • 조정일 (농촌진흥청 국립식량과학원 작물재배생리과) ;
  • 조현숙 (농촌진흥청 국립식량과학원 작물재배생리과) ;
  • 김준환 (농촌진흥청 국립식량과학원 작물재배생리과) ;
  • 신평 (농촌진흥청 국립식량과학원 작물재배생리과) ;
  • 백재경 (농촌진흥청 국립식량과학원 작물재배생리과) ;
  • 상완규 (농촌진흥청 국립식량과학원 작물재배생리과)
  • Received : 2018.09.02
  • Accepted : 2018.11.16
  • Published : 2018.12.31
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Abstract

The System of Rice Intensification (SRI) has been spread very quickly in southern Cambodia. To understand the motivation of farmers in adapting SRI, and its benefits, we conducted an on-farm study at Popel commune, Tramkak district, Takeo province in southern Cambodia, during the 2012 and 2013 wet season. We noticed a significant difference between SRI and conventional farmers' practices (FP) in rainfed lowland rice ecosystem. Despite of low nitrogen input, without chemical fertilizers, high grain yield was achieved in SRI 1 (6.0 t ha) and SRI2-Bottom ($7.2t\;ha^{-1}$) in 2013. SRI 1 and SRI 2 of panicle and number of panicle were high than SR 3, FP 2, and FP 3 due to early transplant. Relationships between total number of spikelet and plant nitrogen were ($r^2=0.95$) highly positive at harvest. SRI fields were, most of them achieving highly superior yield and number of panicle compared to their FP fields. The results indicated that SRI practices of planting younger seedling, with organic material and topography of paddy, lead to increased grain yield.

1. 본 연구는 저지대 천수답지역인 캄보디아 남부 따게오주에서2012~2013년에 2년간 벼 집약재배관리 시스템(System of Rice Intensification: SRI)에 대한 현장 연구 결과이다. 2. 천수답 지역에서 2년간 SRI는 FP 보다 화학비료 사용 없이 쌀 수량이 증가 되었다. 캄보디아 천수답 농가의 SRI은 어린모로 조기 이앙과 넓은 재식 밀도로 인해 이삭수 확보와 함께 지형에 따른 물 보유 능력과 오랜 기간 유기물 사용으로 수량이 증가된 것으로 판단된다. 3. 쌀 수량에 미치는 영향으로 총 질소 흡수량과 단위면적당 총 영화수는 ($r^2=0.95$) 정의 상관관계를 보였으며, 천수답 지역에서 물 관리 방법은 어렵지만 유기물을 장기간 사용한 지역 농가의 쌀 생산은 증가 되었다. 4. 최근 국내에서 일부 지역에서 소식재배가 확대되고 있는데 SRI원리를 소식재배와 연계한다면 보다 좋은 재배방법이 될 것으로 기대된다.

Keywords

Acknowledgement

Supported by : 국립식량과학원

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