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바이오차 펠렛 시용량에 따른 옥수수 작물재배 시 토양 화학성 변화에 미치는 영향
박도균 ( Dogyun Park ),신중두 ( Joungdu Shin ) 한국환경농학회 2020 한국환경농학회 학술대회집 Vol.2020 No.-
본 연구의 목적은 밭에서 바이오차 팰렛 사용에 따른 옥수수 재배 시 바이오차 팰렛의 적정 시용비율을 구명하고, 탄소 격리량을 산정하는 것이다. 바이오차 팰렛은 N 40%, N 40%(0.07M MgO), N 60%로 구분하여 처리하였으며, 대조구의 비료 시용량은 15.8-3.0-6.3 kg/10a<sup>-1</sup>(N-P-K)으로 처리하였다. 토양 중 NH<sub>4</sub>-N및 NO<sub>3</sub>-N함량 변화에서 토양중의 질소 함량은 대조구가 처리구에 비해 높게 나타났으며, P<sub>2</sub>O <sub>5</sub>함량 변화에서 전 작기에 걸쳐 대조구가 처리구에 비해 높은 반면, K<sub>2</sub>0의 함량은 정식 후 21일과 51일에 높게 나타났다. 유거수 중의 NH<sub>4</sub>-N및 NO<sub>3</sub>-N함량 변화는 대조구가 처리구에 비해 전반적으로 높게 관측이 되었으며, PO<sub>4</sub>-P및 SiO<sub>2</sub>함량 변화에서는 처리 간에 큰 차이(p〉0.05)가 없었다. 바이오차 팰렛 처리에 따른 토양 탄소 격리량에서는 대조구(60.4 kg 10a<sup>-1</sup>)와 N 40% (0.07M MgO)처리 구간에서는 유의차(p〈0.05)를 보이지 않았으며, 옥수수 바이오매스 생체중은 N 60% 바이오차 팰렛 처리구를 제외하고 대조구(1, 123±130.0 kg 10a<sup>-1</sup>)에 비해 처리구 간의 유의차가 없었다. 그러므로 바이오차 팰렛 시용에 따른 옥수수 재배 시 질소 약 60%를 저감 할 수 있을 것으로 생각한다.
옥수수재배 시 바이오차팰렛 시용량에 따른 토양 화학성 변화에 미치는 영향
박도균(DoGyun Park),김혜원(HyeWon Kim),김희선(HuiSeon Kim),장은숙(EunSuk Jang),신중두(JoungDu Shin) 유기성자원학회 2019 유기성자원학회 학술발표대회논문집 Vol.2019 No.춘계
Objectives of this experiment were to investigate the changes of soil chemical properties and estimate carbon sequestration according to application rates of blended biochar pellet during corn cultivation. The treatments were MgO (40% N + 0.07M MgO), and 60% of blended biochar pellet (60% N) based on the recommended application rates of fertilizer for corn cultivation by National Institute of Agricultural Sciences. Application amounts of 10a -1 and 440kg 10a -1 , respectively. Nitrogen fertilizer was separately applied at 2 times as basal and additional application and the other were applied with whole basal application before transplanting. However, blended biochar pellets were applied as whole basal application with different rates. Chemical analysis was performed in the runoff water and soil, and then measured fresh biomass weight for biomass growth responses of corn to different blended biochar application rates. For the results of this experiment, it shown that the residual contents of NH4-N, NO3-N, P2O5 and K2O in the treatments of blended biochar application rates were lower than those of the control through corn cultivation periods. However, the K2O contents in the treatments were higher than those in the control at 21 days and 51 days after corn transplanting. NH4-N and NO3-N contents of runoff water in the control appeared to be higher than those of the blended biochar pellet treatments, but PO4-P and SiO2 contents did not significantly different (p>0.05) between the control and blended biochar application plots. Carbon sequestration (60.0 kg 10a -1 ) did not significantly different between the control and 40% N + 0.07M MgO treatment plot. Fresh biomass weights in the control were not significantly different with all the treatments except for the 60% N even if reduction of nitrogen fertilizer application were decreased 60% relative to the control. Therefore, it was decided that application of blended biochar pellet for corn cultivation was potential benefit to enhance the nutrient use efficiency as well as reduction of the chemical fertilizer mounts for corn cultivation in agricultural practices.
벼 재배 시 바이오차 펠렛 비료 시용에 대한 농업환경 영향 평가
신중두 ( Joungdu Shin ),박도균 ( Dogyun Park ),김희선 ( Huiseon Kim ),최은정 ( Eunjong Choi ),이선일 ( Sunil Lee ),박상원 ( Sangwon Park ),박광호 ( Kwang-ho Park ),정인호 ( In-ho Jung ) 한국환경농학회 2020 한국환경농학회 학술대회집 Vol.2020 No.-
Objective of this experiment was to investigate the agro-environmental effect in rice paddy and water system during rice cultivation. The treatments consisted of control (9-4.5-5.7 kg 10a<sup>-1</sup>, N-P-K and 250 kg 10a<sup>-1</sup> of pig manure compost application), supplemented rice hull black carbon pellet (SRHBPN-40%, 3.6 kg 10a<sup>-1</sup> based on TN) and activated palm biochar pellet (SAPBPN-40%, 3.6 kg 10a<sup>-1</sup> based on TN). The results showed that NH<sub>4</sub><sup>+</sup> -N concentrations were abruptly decreased at 7 days after rice transplant, while low NO<sub>3</sub><sup>-</sup>-N concentrations were continuously enumerated until 58 days after transplant in the paddy water regardless of treatments. PO<sub>4</sub><sup>-</sup>-P concentrations in the control were higher than the other treatment through rice cultivation periods except for 7 days after transplant. K+ concentrations were continuously decreased with delaying the growth period. SiO<sub>2</sub> concentrations did not significantly different among the treatment. For the paddy soil,the mineralization and nitrification rates were abruptly decreased at 37 days and 15 days after transplant in whole treatments, respectively. P<sub>2</sub>O<sub>5</sub> concentrations were eventually increased through 87 days of cultivation periods and then decreased until harvesting time. K<sub>2</sub>O concentrations were abruptly increased from 87 days after transplant to the harvest in whole treatments. The highest carbon sequestration was 1.9 tonnes ha<sup>-1</sup> in the MRHBPN-40%, For the greenhouse gases, CH<sub>4</sub> emissions in the APBPN-40% were observed to be lowest, while N<sub>2</sub>O emissions were lowest until 37 days after transplant in the MRHBPN-40%. For growth responses, the grain yield was not significantly different between the control and MRHBPN-40%, but highest straw yield was 12.18 tonnes ha<sup>-1</sup>. Therefore, modified supplemented biochar pellets have a potential ability to utilize for reducing agricultural impacts as well as greenhouse gas mitigation for the rice cultivation.
Dogyun Kim,Bongchan Kim,Sanggil Park 전북대학교 휴양및경관계획연구소 2016 휴양및경관연구 (J East Asian Landscape Studies) Vol.10 No.3
The aim of this study was to introduce meadow landscape planting in Korea. The survey site was the grasslands on the mid mountain at Jeju Island in Korea. In all, 96 plant taxa consisting of 32 families, 84 genera, 78 species, and 18 varieties were recorded during the investigation of grass-dominating grassland at the study site. An analysis of the grass vegetation types in the survey area revealed their potential for meadow landscape planting. The formal characteristics of plants such as the stem, leaf, and flower were dominant in this grassland. The principal communities were Miscanthus sinensis var purpurascens, Themeda triandra var. japonica(Willd.)-Imperata cylindrica var. koenigii, and Zoysia japonica Steud. A total of 74 plant species were compatible for meadow planting in the area. However, 22 plant species of weeds, climbers, woody, exotic, and invasive plants were excluded in these study sites because the meadow vegetation development might be hampered by them. Following the meadow planting design concept for plants, investigated plants were classified into several categories with two main concept criteria: the design and functional layers. The design layer was subdivided into structural and seasonal layers. Likewise, the functional layer was divided further into ground cover and filler layers. The results of this study suggested that some useful plants can be selected from natural meadows at Jeju for the future target planting of grasslands in Korea.
벼 재배 시 활성 바이오차 팰렛 비료 시용에 따른 논 표면수와 토양의 주요 양분 함량 및 벼 생육에 미치는 영향
이상범(SangBeom Lee),박도균(DoGyun Park),정창윤(ChangYoon Jeong),남주희(JooHee Nam),김민정(MinJeong Kim),남홍식(HongShik Nam),심창기(ChangKi Shim),홍승길(SeungGil Hong),신중두(JoungDu Shin) 유기성자원학회 2022 유기물자원화 Vol.30 No.2
실험은 벼 재배 기간 동안 활성바이오차팰렛 비료(ABPFs) 시용에 따른 벼 생육 반응, 논 표면수 및 토양의 화학적 특성 변화를 평가하였다. 시험구 처리는 대조구, 활성왕겨바이오차 팰렛 비료(ARHBP-40%), 활성 야자수바이오차 팰렛 비료(APBP-40%)로 구성되어 있다. ARHBP-40% 처리구에서 논 표면수의 NH₄⁺-N 및 PO₄⁻-P의 농도가 가장 낮게 관측되었으며, 대조구에서 토양 중의 NH4⁺-N농도가 이양 후 30일 까지 급격하게 감소되었다. 또한, 바이오차 혼합처리구에서 NH₄⁺-N 농도는 이양 후 1일에 9.18 mg L⁻¹로서 가장 낮았으며, 이양 후 56일에 ABPFs 처리구에서 NH₄⁺-N 농도가 1 mg L⁻¹ 이하로 관측되었다. 이앙 후 30일 까지 ARHBP-40% 처리구에서 PO₄⁻-P농도는 0.06 mg L⁻¹에서 0.08 mg L⁻¹ 범주로 처리구 사이로 가장 낮았다. 대조구에 있어 논 토양 중의 NH₄⁺-N 농도는 이양 후 14일에 177.7 mg kg⁻¹ 에서 49.4 mg kg⁻¹로 급격히 감소한 반면, NO₃⁻-N 농도는 13.2 mg kg⁻¹로 가장 높았다. 토양 중의 P₂O₅ 농도는 처리에 관계없이 이양 후부터 수확기 까지 증가하는 경향 이었다. APBP-40% 처리구에서 K₂O 농도는 이앙 후 84일에 252.8 mg kg⁻¹로 가장 높았다. 대조구에서 초장은 다른 처리구에 비해 높았으며, 수량은 대조구와 ARHBP-40% 처리구 사이에 차이가 인정되지 않았다. 따라서 농업 생태계에서 ARHBP-40% 처리를 함에 따라 질소와 인산 시용량을 줄일 수 있다. The application of supplemental activated biochar pellet fertilizers (ABPFs) was evaluated by investigating key factors such as changes of surface paddy water and soil chemical properties and rice growth responses during the growing season. The treatments consisted of control, activated rice hull biochar pellet (ARHBP-40%), and activated palm biochar pellet (APBP-40%) applications. It was shown that the lowest NH₄ ⁺-N and PO₄⁻-P concentrations were observed in surface paddy water to the ARHBP-40%, while the NH₄ ⁺-N concentration in the control was abruptly decreased until 30 days after transplant in the soil. However, the lowest NH₄ ⁺-N concentration in the blended biochar application was 9.18 mg L⁻¹ at 1 day of transplant, but its ABPFs application was observed to be less than 1 mg L⁻¹ at 56 days after transplant. The lowest PO₄⁻-P concentration in paddy water treated ARHBP-40% ranged from 0.06 mg L⁻¹ to 0.08 mg L⁻¹ until 30 days after transplant among the treatments. For the paddy soil, the NH₄ ⁺-N concentration in the control was abruptly decreased from 177.7 mg kg⁻¹ to 49.4 mg kg⁻¹, while NO₃ ⁻-N concentration was highest, 13.2 mg kg⁻¹ in 14 days after transplant. The P₂O₅ concentrations in the soils increased from rice transplants until the harvesting period regardless of the treatments. The highest K₂O concentration was 252.8 mg kg⁻¹ in the APBP-40% at 84 days after transplant. For the rice growth responses, plant height in the control was relatively high compared to others, but grain yield was not significantly different between the control and ARHBP-40%. The application of ARHBP-40% can minimize nitrogen and phosphorous application rates into the agro-ecosystem.