한국작물학회지 (KOREAN JOURNAL OF CROP SCIENCE)

  • 제65권1호
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  • Pages.72-78
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  • 2020
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  • 0252-9777(pISSN)
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  • 2287-8432(eISSN)
한국작물학회 (The Korean Society of Crop Science)
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억새 바이오매스 시용이 밭토양 이화학성과 작물 생육에 미치는 영향

Effect of Miscanthus Biomass Application on Upland Soil Physicochemical Properties and Crops Growth

  • 강용구 (국립식량과학원 바이오에너지작물연구소) ;
  • 문윤호 (국립식량과학원 바이오에너지작물연구소) ;
  • 권다은 (국립식량과학원 바이오에너지작물연구소) ;
  • 이지은 (국립식량과학원 바이오에너지작물연구소) ;
  • 김광수 (국립식량과학원 바이오에너지작물연구소) ;
  • 차영록 (국립식량과학원 바이오에너지작물연구소)
  • Kang, Yong Ku (Bioenergy Crop Research Institute, National Institute of Crop Science, RDA) ;
  • Moon, Youn Ho (Bioenergy Crop Research Institute, National Institute of Crop Science, RDA) ;
  • Kwon, Da Eun (Bioenergy Crop Research Institute, National Institute of Crop Science, RDA) ;
  • Lee, Ji Eun (Bioenergy Crop Research Institute, National Institute of Crop Science, RDA) ;
  • Kim, Kwang Soo (Bioenergy Crop Research Institute, National Institute of Crop Science, RDA) ;
  • Cha, Young Lok (Bioenergy Crop Research Institute, National Institute of Crop Science, RDA)
  • 투고 : 2019.11.04
  • 심사 : 2020.01.01
  • 발행 : 2020.03.01
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초록

본 연구는 탄질비(C/N)가 224인 억새 절삭물을 토양에 시용하여 토양을 개선하고 작물 생육을 촉진하고자 ha 당 무시용, 10톤, 20톤을 처리하였다. 그 결과, 토양 유기물 함량이 시험 전 11.0 g·kg-1에서 3년 후 최대 16.3까지 증가하였다. 토양 양이온치환용량의 경우 3년 후 최대 15.3 cmolc·kg-1까지 증가하였다. 앞그루작물인 단수수는 20톤 시용구가 줄기가 굵었고 주당 착즙량이 60 ml로 가장 많았다. 착즙액량과 착즙액의 가용성고형물 함량을 곱한 수량지수는 억새 10톤 시용구가 1,913으로 가장 높고 20톤 시용구와 대조구가 각각 1,851, 1,839 순이었다. 억새 바이오매스 시용량이 늘어나고 시험 연차가 길어짐에 따라 일시적 비절과 가뭄 피해가 발생하였다. 고구마 지상부 생육은 억새 시용의 영향을 받지 않았다. 상품(marcketable) 괴근 수는 억새 20톤 시용구가 대조구와 같은 2,9개였고, 10톤 시용구가 3.6개로 가장 많았다. 억새 20톤 시용구와 대조구의 2년간 평균수량이 각각 2,579 kg/10a, 2,708으로 낮았고 10톤 시용구가 3,289로 가장 많았다. 뒷그루작물인 양파의 경우 억새 시용에 따른 수량 차이는 인정되지 않았으나 억새 20톤 시용구가 무시용구나 10톤 시용구에 비해 양파 초장과 엽장이 길었다. 마늘의 수량은 2,630~2,901 kg/10a으로서 억새 시용의 영향이 없었고, 억새 10톤 시용구가 초장과 엽장이 가장 길었고, 인편 수는 억새 시용구가 인경구당 8.2~8.3개였고 대조구가 8.9개로 가장 많았다. 본 시험 결과, ha 당 10톤 내외의 억새 바이오매스를 시용할 경우 토양 개량과 더불어 작물 생육과 수량을 촉진시켜 향후 부존자원인 억새의 가치를 재발견하는 실마리가 될 것으로 보인다.

In this study, miscanthus with C/N ratio of 224 were applied to the soil and treated with 0 (control), 10 tons and 20 tons·ha-1 to improve the soil and promote crop growth. As a result, soil organic matter content increased from 11.0 g·kg-1 before the test to 16.3 after 3 years. Soil cation exchangeable capacity increased to 15.3 cmolc·kg-1 after 3 years. In the sweet sorghum, stem was the most thickest at 20 tons·ha-1 application of miscanthus and the highest juice amount per plant was 60 ml. The yield index multiplied by the soluble solids content of juice and juice amount was the highest at 1,913 for 10 tons application and 1,851, 1,839 for 20 tons, control respectively. Number of sweetpotato storage root were 2,9 in 20-tons application plot, the same as control, and 10-tons application plot was 3.6, the most. Two-year average yields of 20 tons plot and control were low at 2,579 kg/10a and 2,708 respectively, and 10 tons plot was the highest at 3,289. For onions, the biomass application did not effect the yield. but onion plant and leaf length were longer in 20 tons plot than in control or 10 tons. The yield of garlic was 2,630~2,901 kg/10a and there was no effect of miscanthus application. Plot of 10 tons application were the longest in plant and leaf length, and the number of scale was 8.2-8.3 per in bulb, and 8.9 tons·ha-1 in control. Therefore, it was confirmed the possibility that miscanthus biomass application of about 10 tons·ha-1 could improve the soil condition and promote crops growth and yield.

키워드

참고문헌

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