Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)
- Volume 32 Issue 2
- /
- Pages.109-114
- /
- 1999
- /
- 0367-6315(pISSN)
- /
- 2288-2162(eISSN)
Grain Yield and Nitrogen Use Efficiency due to Long-Term Fertilization in Paddy Rice
동일비료(同一肥料) 장기운용(長期連用)에 따른 벼의 수량과 질소이용효율(窒素利用效率)
- Yun, Eul-Soo (National Yeongnam Agri. Expt. Stn. Plant Environ. Division) ;
- Choe, Zhin-Ryong (Gyeongsang National University, Department of Agronomy) ;
- Jung, Yeun-Tae (National Institute of Agricultural Science and Technology) ;
- Park, Kyeong-Bae (National Yeongnam Agri. Expt. Stn. Plant Environ. Division) ;
- Lee, Jae-Saeng (National Yeongnam Agri. Expt. Stn. Plant Environ. Division)
- 윤을수 (영남농업시험장 식물환경과) ;
- 최진룡 (경상대학교 농과대학 농학과) ;
- 정연태 (농업과학기술원) ;
- 박경배 (영남농업시험장 식물환경과) ;
- 이재성 (영남농업시험장 식물환경과)
- Published : 1999.06.30
Abstract
This study was carried out to obtain some information on the sustainability of paddy rice through the long-term variation of nitrogen use efficiency. The experiment was conducted during 30-year with the same amount of N, P, K and compost at Milyang, southern part of Korea. The results were as follows. Grain yield was increased significantly in the plots of compost incorporation only. However, yield productivity was decreased slightly in the plots with nil and unbalanced fertilization. The effects of rice straw compost on grain yield was not clear at the early crop years but was shown slightly at the late period of the experimental. The grain yield in the plots of compost incorporation at 30th crop year was come to about 80% of NPK plots. The amount of nitrogen uptaken by rice plant was the highest as
벼 집약적(集約的) 재배증계하(栽培證系下)에서 화학비료 시용량 절감 및 퇴비의 이용가능성(利用可能性)을 검토키 위하여 영남농업시험장에서 30년간 실시한 동일비료(同一肥料) 장기연용(長期連用)시험을 중심으로 벼 수량성 및 질소이용효율의 연도별 변이를 분석한 결과는 다음과 같다. 동일비료(同一肥料)연용년도별 벼 수량성(收量性)변화는 퇴비단용구에서 통계적으로 유의한 증가를 보인 반면 무비구와 질소결제구에서는 감소의 경향을 보였고, 퇴비(堆肥)의 효과(效果)는 초기(初期) 10년간(年間)은 뚜렷한 차(差)가 없었으나 그 후(後) 점증(漸增)하여 30년(年)이 경과(經過)한 1996년(年)의 수량(收量)은 3요소구(要素區)의 80%수준(水準)이었다. 처리별(處理別) 요소흡수량(窒素吸收量)은 3요소+퇴비구가
Keywords
- Long-term fertilization;
- Indigenous soil nitrogen supply;
- Nitrogen use efficiency;
- Partial factor productivity from N fertilizer applied($PFP_N$)