녹비작물 환원에 따른 벼 재배지 인산수지 평가
Evaluation of Phosphorus Balance in Green Manure-Rice Cropping Systems with Different Incorporation Rate of Green Manure Crops
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
BACKGROUND: In Korea, green manure has been cultivated for reducing chemical fertilizer application,maintaining soil fertility, and feeding livestock in winter season. We evaluated the phosphate balance under green manure-rice cultivating system with different removal rates of green manure for maintaining soil fertility. METHODS AND RESULTS: The barley and hairy vetch mixture was selected as the green manure in this study. The barley and hairy vetch was sowed at a rate of 135and 23 kg/ha, respectively, without fertilizer application. Total aboveground biomass was 12000 (barley: 5400 kg/ha,hairy vetch: 6600 kg/ha) kg/ha, and these green manure were incorporated with different input rates before rice planting. The input rates of green manure in this study were 0 (NPK+0%), 25 (NPK+25%), 50 (NPK+50%), 75 (NPK+75%)and 100 % (NPK+100) and the standard fertilization (NPK)without green manure cultivation. All treatments were applied with standard fertilizer (N-P-K: 90-19.6-48.3kg/ha) before rice planting. The highest rice yield was observed in NPK+50% which was 20% higher compared with NPK. The phosphate balance with different incorporation rates of green manure was-104.0,-76.8,-52.9,-27.4, and 6.0kg/ha for NPK+0%, NPK+25%, NPK+50%, NPK+75%,and NPK+100%, respectively. CONCLUSION(S): The use of green manure for livestock feeding in green manure-rice cropping systems could remove a huge amount of phosphate. This cropping system strongly requires phosphate application before green manure seeding for maintaining soil fertility.
Abstract
BACKGROUND: In Korea, green manure has been cultivated for reducing chemical fertilizer application,maintaining soil fertility, and feeding livestock in winter season. We evaluated the phosphate balance under green manure-rice cultivating system with different removal rates of green manure for maintaining soil fertility. METHODS AND RESULTS: The barley and hairy vetch mixture was selected as the green manure in this study. The barley and hairy vetch was sowed at a rate of 135and 23 kg/ha, respectively, without fertilizer application. Total aboveground biomass was 12000 (barley: 5400 kg/ha,hairy vetch: 6600 kg/ha) kg/ha, and these green manure were incorporated with different input rates before rice planting. The input rates of green manure in this study were 0 (NPK+0%), 25 (NPK+25%), 50 (NPK+50%), 75 (NPK+75%)and 100 % (NPK+100) and the standard fertilization (NPK)without green manure cultivation. All treatments were applied with standard fertilizer (N-P-K: 90-19.6-48.3kg/ha) before rice planting. The highest rice yield was observed in NPK+50% which was 20% higher compared with NPK. The phosphate balance with different incorporation rates of green manure was-104.0,-76.8,-52.9,-27.4, and 6.0kg/ha for NPK+0%, NPK+25%, NPK+50%, NPK+75%,and NPK+100%, respectively. CONCLUSION(S): The use of green manure for livestock feeding in green manure-rice cropping systems could remove a huge amount of phosphate. This cropping system strongly requires phosphate application before green manure seeding for maintaining soil fertility.
참고문헌 (4)
- 전원태, "녹비작물 환원 시 Glomalin 함량에 따른 토양물리성 및 벼 수량 변화", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 43(2), pp.119~123 (2010), 한국토양비료학회
- 전원태, "두과 녹비작물과 보리 혼파 이용 시 예취 높이에 따른 Biomass와 벼 생육 및 수량 변화", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 45(2), pp.192~197 (2012), 한국토양비료학회
- 김필주, "OECD 양분수지를 이용한 축산선진국의 농경지 축산분뇨 이용실태 평가", 한국환경농학회지, 27(4), pp.337~342 (2008), 한국환경농학회
- RDA, "Standard methods for agricultural experiments", Rural Development Administration, Korea, ~ (2003)