벼 재배 시 바이오차 펠렛 시용 수준에 따른 농업 환경 영향 및 토양 탄소격리 평가 (Evaluation of Agro- Environmental Effect and Soil Carbon Sequestration to different Application Ratios of Supplemented Biochar Pellet in the Paddy during Rice Cultivation)

서지정보

· 발행기관 : 한국환경농학회
· 수록지 정보 : 한국환경농학회지 / 39권 / 2호 / 114 ~ 121페이지
· 저자명 : 신중두, 박도균, 김희선, 이선일, 홍승길

초록

BACKGROUND: Biochar-based fertilizers delay the nutrient release and feature a slow release effect for agricultural and environmental advantages. This experiment was conducted to evaluate agro-environmental effects of different application ratios of modified biochar pellets supplemented.
METHODS AND RESULTS: The treatments consisted of the control, 40% N, 60% N and 60% N (0.07M MgO) of modified supplemented biochar pellets (MSBP), which were based on recommended ratio of nitrogen for rice cultivation. For the paddy water, the NH4-N and NO3-N concentrations in whole treatments rapidly increased at 84 days and 40 days after transplanting, respectively. The PO4-P concentrations in the MSBP were generally lower than those of the control. For the paddy soil, NH4-N concentrations in the MSBP were higher than those of the control at 5 days after transplanting, while NO3-N concentrations were not significantly different in the treatments through rice cultivation. P2O5 concentrations in the control were higher than those of the MSBP until 40 days after transplanting while K2O concentrations were not significantly different among the treatment. The highest carbon sequestration was 970 kg ha-1 in the 60% N (0.07M MgO), and the potential carbon storage in the 60% N (0.07M MgO) was higher at 222 kg ha-1 than the control during rice cultivation. It shown that the rice yield in the control was not significantly different from the 40% N and 60% N (0.07M MgO) application plots.
CONCLUSION: Application of MSBP for rice cultivation was effective for carbon sequestration and agro-environmental effects even though nitrogen application ratio was reduced at 40% based on recommended application ratio of fertilizer.

영어초록

BACKGROUND: Biochar-based fertilizers delay the nutrient release and feature a slow release effect for agricultural and environmental advantages. This experiment was conducted to evaluate agro-environmental effects of different application ratios of modified biochar pellets supplemented.
METHODS AND RESULTS: The treatments consisted of the control, 40% N, 60% N and 60% N (0.07M MgO) of modified supplemented biochar pellets (MSBP), which were based on recommended ratio of nitrogen for rice cultivation. For the paddy water, the NH4-N and NO3-N concentrations in whole treatments rapidly increased at 84 days and 40 days after transplanting, respectively. The PO4-P concentrations in the MSBP were generally lower than those of the control. For the paddy soil, NH4-N concentrations in the MSBP were higher than those of the control at 5 days after transplanting, while NO3-N concentrations were not significantly different in the treatments through rice cultivation. P2O5 concentrations in the control were higher than those of the MSBP until 40 days after transplanting while K2O concentrations were not significantly different among the treatment. The highest carbon sequestration was 970 kg ha-1 in the 60% N (0.07M MgO), and the potential carbon storage in the 60% N (0.07M MgO) was higher at 222 kg ha-1 than the control during rice cultivation. It shown that the rice yield in the control was not significantly different from the 40% N and 60% N (0.07M MgO) application plots.
CONCLUSION: Application of MSBP for rice cultivation was effective for carbon sequestration and agro-environmental effects even though nitrogen application ratio was reduced at 40% based on recommended application ratio of fertilizer.

참고자료

· 없음