Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Assessment of Productivity and Vulnerability of Climate Impacts of Forage Corn (Kwangpyeongok) Due to Climate Change in Central Korea

국내 중부지역에 있어서 기후변화에 따른 사료용 옥수수의 생산성 및 기후영향취약성 평가

  • Chung, Sang Uk (Division of animal bio and applied chemistry science, Graduate school of Konkuk University) ;
  • Sung, Si Heung (Division of animal bio and applied chemistry science, Graduate school of Konkuk University) ;
  • Zhang, Qi-Man (Division of animal bio and applied chemistry science, Graduate school of Konkuk University) ;
  • Jung, Jeong Sung (National institute of animal science) ;
  • Oh, Mirae (Division of animal bio and applied chemistry science, Graduate school of Konkuk University) ;
  • Yun, Yeong Sik (Institute of livestock environmental management) ;
  • Seong, Hye Jin (Division of animal bio and applied chemistry science, Graduate school of Konkuk University) ;
  • Moon, Sang Ho (Division of animal bio and applied chemistry science, Graduate school of Konkuk University)
  • 정상욱 (건국대학교 대학원 동물산업전공) ;
  • 성시흥 (건국대학교 대학원 동물산업전공) ;
  • 장치만 (건국대학교 대학원 동물산업전공) ;
  • 정종성 (국립축산과학원) ;
  • 오미래 (건국대학교 대학원 동물산업전공) ;
  • 윤영식 (축산환경관리원) ;
  • 성혜진 (건국대학교 대학원 동물산업전공) ;
  • 문상호 (건국대학교 대학원 동물산업전공)
  • Received : 2019.06.11
  • Accepted : 2019.06.17
  • Published : 2019.06.30
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Abstract

A two-year study was conducted from 2017 to 2018 by the establishment of a test field at Chungju-si and Cheongyang-gun. Plant height, number of leaves, insects and diseases, and fresh and dry matter yields for corn hybrid('Kwangpyeongok') were investigated. Daily average, maximum, and minimum temperature, monthly average temperature, daily precipitation, and sunshine duration during the growing season were investigated. We selected climate-critical factors to corn productivity and conducted an evaluation of vulnerability to climate change from 1999 to 2018 for both regions. In 2018, the dry matter yield of forage corn was 6,475 and 7,511 kg/ha in Chungju and Cheongyang, respectively, which was half of that in 2017. The high temperature and drought phenomenon in the 2018 summer caused the corn yield to be low. As well as temperature, precipitation is an important climatic factor in corn production. As a result of climate impact vulnerability assessment, the vulnerability has increased recently compared to the past. It is anticipated that if the high temperature phenomenon and drought caused by climate change continues, a damage in corn production will occur.

본 연구는 중부지역 사료용 옥수수 생산성 조사를 위해 충청북도 충주시 대소원면과 충청남도 청양군 운곡면에 각각 시험포장지를 조성하여 2017년부터 2018년까지 2년간 실시하였다. 사료용 옥수수의 공시품종은 국내 육성품종인 광평옥을 사용하였고 초고, 엽수, 병충해, 생물수량, 건물수량 등을 조사하였다. 기후자료는 기상청의 기상관측소의 일평균기온, 일최고기온, 일최저기온, 월평균기온, 일강수량, 일일 일조시간 등의 관측자료를 참고하였다. 과거 연구자료를 바탕으로 옥수수 생산성에 악영향을 미치는 기후인자를 선정하여 1999년부터 2018년까지 두 지역에 대한 기후영향취약성 시범평가를 진행하였다. 시험포를 조성한 2년간 옥수수 건물수량은 최근 20년 평균 수량인 21,193 kg/ha보다 낮았다. 특히 2018년의 충주시와 청양군의 옥수수 건물수량은 각각 6,475 kg/ha과 7,511 kg/ha으로 나타나 2017년에 비해 절반수준으로 감소하였으며, 20년간의 전국 평균과 비교해도 절반 이하의 수준을 나타냈다. 2018년 충주와 청양의 평균기온 및 최고기온은 두 지역 모두 평년에 비해 높은 경향을 나타냈다. 2018년 생육기간동안 일조시간은 충주지역 873.7시간, 청양지역 942.1시간으로 나타나 과거 30년 동안 생산량 상위그룹의 생육기간 동안의 평균 일조시간 689.8시간을 크게 상회했다. 2018년 옥수수 건물수량의 급격한 감소는 당해 여름철 고온현상, 장기간의 가뭄 및 강수량 부족 때문인 것으로 사료된다. 본 연구에서 산정한 조건으로 기후영향취약성평가를 실시한 결과, 충주와 청양지역 모두 과거에 비해 최근에 취약성이 높아진 경향을 나타냈다. 옥수수의 생산성에 있어서 보다 정확한 기후영향취약성 평가를 위해서는 토양수분, 습도 등의 다양한 기후요인을 산정한 추가적인 연구가 필요할 것으로 판단된다.

Keywords

References

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