논문 상세보기
pp.79-86
The late-maturing black rice cultivar Shinnongheugchal from Jeollabuk-do Agricultural Research and Extension Service was used as the plant material for estimating growth characters, quality and yield from the vegetation period to harvest age. This study was performed to select an optimum combination of nitrogen level and planting density for the maximum yield of Shinnongheugchal. The plant height, number of tillers, and SPAD index were higher when the combination of 70 hills per 3.3 m 2 and 13 kg/10 a nitrogen level was used at 30 days after transplanting. The heading date for the combination of 70 hills per 3.3 m 2 and 15 kg/10 a nitrogen level, and 80 hills per 3.3 m 2 and 15 kg/10 a nitrogen level was August 22. The heading date for the other combinations was August 21. The combination of 70 hills per 3.3 m 2 and 13 kg/10 a nitrogen level yielded the highest number of tillers at 40 days after flowering. Even though the lodging index was increased with increasing nitrogen levels, field lodging did not occur until harvest time. Seed nitrogen concentration in the combination of 70 hills per 3.3 m 2 and 13 kg/10 a nitrogen level showed a significant difference when compared with the other combinations. The black rice yield varied significantly, and the highest yield was observed in the combination of 70 hills per 3.3 m 2 and 13 kg/10 a nitrogen level. The yield was significantly correlated with seed nitrogen concentration. The maximum yield was estimated to be 14.67 kg/10 a nitrogen level by using the regression equation. On average, the coloring degree of the black rice was higher at planting density of 70 hills per 3.3 m 2 than at 80 hills per 3.3 m 2 . The highest yield of perfect black rice was obtained using the combination of 70 hills per 3.3 m 2 and 13 kg/10 a nitrogen level. Our findings demonstrate that a nitrogen level of 13-14 kg/10 a can be used to obtain the maximum yield from Shinnongheugchal with yield, cyanidin 3-glucoside content, and perfect black rice yield as the standard.
시험재료 및 재배방법
시비방법 및 토양분석
생육 및 수량 조사
질소 및 C3G 함량 분석
기상환경 조사
통계분석
결과 및 고찰
시험 전·후 토양 화학성
재식밀도 및 시비량별 생육특성
도복지수 및 포장 도복
조직별 질소 함량
수량구성요소 및 흑미 수량
현미 품위 및 완전 착색립 수량
최고수량을 위한 최적 질소 시비량 설정
적 요
인용문헌(REFERENCES)
