한국작물학회지 (KOREAN JOURNAL OF CROP SCIENCE)

  • 제68권4호
  • /
  • Pages.438-444
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  • 2023
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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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이앙 시기와 재식 밀도에 따른 이탈리안 라이그라스의 생육 및 종실 수량 특성 평가

Transplanting Date and Planting Density Affect the Growth Characteristics and Seed Yield of Italian Ryegrass

  • 이윤호 (국립식량과학원 작물재배생리과) ;
  • 김정원 (국립식량과학원 작물재배생리과 학연산 협동과정) ;
  • 박혁진 (국립식량과학원 작물재배생리과 학연산 협동과정) ;
  • 김현기 (국립식량과학원 작물재배생리과) ;
  • 장현수 (국립식량과학원 작물재배생리과) ;
  • 김대욱 (국립식량과학원 작물재배생리과) ;
  • 윤종탁 (국립식량과학원 작물재배생리과)
  • Yun-Ho Lee (Crop Production & Physiology Division, National Institute of Crop Science, RDA) ;
  • Jeong-Won Kim (Academy Research Industry Cooperation Program, Crop Production & Physiology Division, National Institute of Crop Science, RDA) ;
  • Hyeok-Jin Bak (Academy Research Industry Cooperation Program, Crop Production & Physiology Division, National Institute of Crop Science, RDA) ;
  • Hyun-Ki Kim (Crop Production & Physiology Division, National Institute of Crop Science, RDA) ;
  • Hyeon-Soo Jang (Crop Production & Physiology Division, National Institute of Crop Science, RDA) ;
  • Dea-Yuk Kim (Crop Production & Physiology Division, National Institute of Crop Science, RDA) ;
  • Jong-Tak Yoon (Crop Production & Physiology Division, National Institute of Crop Science, RDA)
  • 투고 : 2023.09.19
  • 심사 : 2023.11.01
  • 발행 : 2023.12.01
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초록

본 연구는 IRG의 파종 시기에 가을 장마로 파종 시기가 지연되는 문제점을 이앙 재배로 보완하고자 IRG의 이앙시기 및 재식 밀도에 따른 생육 및 종실 수량 특성에 결과이다. 1. 이앙 시기는 10월 20일, 10월 30일 그리고 11월 10일에 하였으며, 재식 밀도는 3.3 m2 당 50주, 70주와 80주로 설정하였다. 2. 초장, 엽면적지수, 군락피복률은 이앙 시기에 따라서 유의한 차이를 보였고, 특히 10월 20일 이앙이 10월30일과 11월 10일 이앙에 비해 높았다. 재식 밀도간에는 유의한 차이를 보이지 않았다. 3. 월동 전후 경수와 건물중 차이는 10월 20일이 10월 30일과 11월 30일에 비해 높았다. 4. 수량구성요소에서 단위 면적당 이삭수, 건물중 및 종실수량이 10월 20일 이앙이 다른 이앙일에 비해 높았고 1000립중 차이는 나지 않으며, 재식밀에서는 70주와 80주간에는 이삭수, 건물중 및 종실 수량 차이는 보이지 않았지만 50주가 다소 낮았다. 5. 안정적인 종자 생산을 위해서는 11월 이전과 70주와 80주로 이앙을 하게 되면 월동전 개체 확보가 경수로 이어져서 수량 확보를 기대 할 수 있다.

Italian ryegrass (Lolium multiflorum Lam.; IRG) sowing season is delayed due to the autumn rainy season. Therefore, to address this problem, transplanting date and plant density were investigated. Transplant times investigated were October 20th, October 30th, and November 10th and planting densities were 50, 70, and 80 hills per 3.3 m2. The plant height, leaf area index, and plant coverage rate were high in the following order: October 20th, October 30th, and November 10th. There was no significant difference among planting densities. In addition, the number of tillers and dry weight before and after wintering were high on October 20th. In terms of yield components, the number of tillers, dry weight, and seed yield per unit area were higher with the transplanting date of October 20th than with transplanting on November 10th. There was no difference in seed yield between the planting densities of 80 and 70 hills per 3.3 m2. However, seed yield was low at 50 hills per 3.3 m2. In conclusion, the transplanting time for stable seed production is late October, and optimal plant density is 70 and 80 hills per 3.3 m2. A stable interplanting number before wintering will contribute to the seed yield.

키워드

과제정보

본 논문은 농촌진흥청 연구사업(PJ 016079012022)의 지원으로 수행된 결과 입니다.

참고문헌

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