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휴폭 및 이른 봄 질소시비량에 따른 국내육성 톨 페스큐의 종자생산성

Effect of the Drill Widths and Nitrogen Application Levels in Early Spring on Seed Productivity of Domestic Tall Fescue (Festuca arundinacea Schreb)

  • 이상훈 (농촌진흥청 국립축산과학원 초지사료과) ;
  • 김기용 (농촌진흥청 국립축산과학원 초지사료과) ;
  • 지희정 (농촌진흥청 국립축산과학원 초지사료과) ;
  • 황태영 (농촌진흥청 국립축산과학원 초지사료과) ;
  • 박형수 (농촌진흥청 국립축산과학원 초지사료과) ;
  • 이기원 (농촌진흥청 국립축산과학원 초지사료과)
  • Lee, Sang-Hoon (Grassland & Forages Division, National Institute of Animal Science, RDA) ;
  • Kim, Ki-Yong (Grassland & Forages Division, National Institute of Animal Science, RDA) ;
  • Ji, Hee Chung (Grassland & Forages Division, National Institute of Animal Science, RDA) ;
  • Hwang, Tae Young (Grassland & Forages Division, National Institute of Animal Science, RDA) ;
  • Park, Hyung Soo (Grassland & Forages Division, National Institute of Animal Science, RDA) ;
  • Lee, Ki-Won (Grassland & Forages Division, National Institute of Animal Science, RDA)
  • 투고 : 2015.04.30
  • 심사 : 2015.05.28
  • 발행 : 2015.06.30

초록

국내육성 톨 페스큐 신품종 푸르미의 종자생산 기술개발과 채종짚의 사료가치 평가를 통해 국내에서 종자생산 체계를 확립하고자 국립축산과학원 초지사료과 시험포장에서 휴폭과 이른 봄 질소 시용량에 따른 종자생산성을 조사하였다. 휴폭 및 이른 봄 질소 시용량에 따른 주요 생육특성은 처리에 따른 차이는 나타나지 않으나 경제성을 고려한 국내육성 톨 페스큐 푸르미 품종의 종자생산성은 휴폭을 15 cm와 이른봄 질소시비량을 90 kg/ha로 처리하는 것이 2톤 이상 안정적인 종자생산을 할 수 있었다. 또한 휴폭이 좁을수록 이삭수 및 종자수량이 높게 나타났으며 이삭의 길이는 휴폭이 넓을수록 더 길었다. 채종종자의 첩립중은 약 2.2g, 발아율은 90% 내외로 나타났다. 휴폭 및 이른 봄 질소 시용량에 따른 채종짚의 생산성은 휴폭이 좁을수록 건물생산성이 높았으나 시비량간에는 일정한 경향이 없었다. 채종후 남은 1차 수확 채종짚은 평균 6,920 kg/ha 생산되었고, 채종 후 2번의 수확에서 건초는 평균적으로 8,134 kg/ha 생산되었다. 채종짚의 일반 조성분 함량은 양질의 건초보다는 다소 낮은 사료가치를 나타내었다.

In this study, we sought to evaluate the growth characteristics and seed productivities of domestic tall fescue that were cultivated with differing combinations of drill widths and nitrogen-application rates in early spring; the examination was conducted at the National Institute of Animal Science, RDA, from 2013 to 2014. The main plots were three widths of 15 cm, 30 cm, and 45 cm, and the subplots were subject to nitrogen-application rates in early spring of 45 kg/ha, 90 kg/ha, 135 kg/ha, and 180 kg/ha. The growth and development characteristics did not vary by treatment in terms of drill width and early-spring nitrogen application. Tall fescue Purumi showed a stable seed productivity of two tons or greater when the drill width was set at 15 cm and 90 kg/ha of nitrogen was applied in early spring. The narrower the drill width, the greater the numbers of both the ears and seeds, while the length of the ear was longer when the drill width was wider. Regarding the influence of the drill width and early-spring nitrogen application on the productivity of seed-producing straw, the dry matter productivity was higher when the drill width was narrower; however, no particular trend was observed with respect to different amounts of fertilizer. The average production amount of the first round of straw after seed gathering was 6,920 kg/ha. The second round produced an average 8,134 kg/ha of dry matter.

키워드

참고문헌

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