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

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effect of Species and Seed Mixture on Productivity and Botanical Composition in Oversown Hilly Pasture, the Central Northern Area of Korea

중북부 산지초지에서 국내육성 목초 이용 불경운 초지조성 혼파조합이 목초 생산성 및 식생구성에 미치는 영향

  • Jung, Jeong Sung (National Institute of Animal Science, Rural Development Administration) ;
  • Choi, Ki Choon (National Institute of Animal Science, Rural Development Administration) ;
  • Kim, Won Ho (National Institute of Animal Science, Rural Development Administration) ;
  • Choi, Gi Jun (National Institute of Animal Science, Rural Development Administration)
  • 정종성 (농촌진흥청 국립축산과학원) ;
  • 최기춘 (농촌진흥청 국립축산과학원) ;
  • 김원호 (농촌진흥청 국립축산과학원) ;
  • 최기준 (농촌진흥청 국립축산과학원)
  • Received : 2020.02.10
  • Accepted : 2020.03.09
  • Published : 2020.03.31
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Abstract

This study was conducted to find out the effects of seed mixture using new domestic grass varieties orchardgrass 'Onnuri' and tall fescue 'Greenmaster' on botanical composition and dry matter productivity from 2015 to 2018 in oversown hilly pasture, the central northern area of Korea. This experiment was consisted of 4 mixed grasses (Treatment 1 : tall fescue oriented mixture with imported varieties; Treatment 2 : orchardgrass oriented mixture with imported varieties; Treatment 3 : orchardgrass oriented mixture with domestic varieties, Treatment 4 : tall fescue oriented mixture with domestic varieties). Evaluation of seasonal changes in botanical composition of pasture showed that orchardgrass was the highest in all treatments, ranging from 46 to 89% and Kentucky bluegrass was the second highest in all treatments. Treatment 3 (7,633 kg ha-1) and Treatment 4 (7,570 kg ha-1), mixed grasses using domestic varieties, were showed the highest dry matter yield than Treatment 1(6,950 kg ha-1) and Treatment 2 (6,934 kg ha-1), which were mixed grasses using introduced varieties. Therefore, these results showed that the orchard grass oriented grasses mixture with domestic varieties was good for grassland vegetation and productivity in oversown hilly pasture, the central northern area of Korea.

본 연구는 평창지역의 산지초지에서 국내 육성 신품종 오차드 그라스와 톨 페스큐를 이용한 혼파조합이 초지의 연차별 생산성과 식생변화에 미치는 영향을 평가하고 북부지역 산지초지 겉뿌림 초지조성에 가장 적합한 혼파조합을 선발하고자 수행되었다. 처리는 4처리로 T1 : 수입 톨 페스큐 위주 혼파조합, T2 : 수입 오차드그라스 위주 혼파조합, T3 : 국내 오차드그라스 위주 혼파 조합, T4 : 국내 톨 페스큐위주 혼파조합 이었다. 혼파조합별 월동 후 생육조사 결과 목초 식생비율은 모두 90% 이상, 분얼 3개 이상, 정착개체수 40개(30×30cm)이상으로 월동 전 생육은 우수하였다. 혼파조합별 초지 식생에서 중북부지역에서는 혼파조합에 관계없이 오차드그라스가 46%에서 최고 89%로 주초종이었으며 켄터키블루그라스는 오차드그라스 다음으로 많은 초종으로 5%에서 최대 26% 식생비율을 보였고 상번초의 비율이 낮아졌을 때 상대적으로 그 비율이 증가하였다. 티모시의 경우 중북부지역에서 1차와 2차시기에 식생비율이 높아졌다가 3차와 4차시기에 낮아지는 특징을 보인다. 초장의 경우 혼파조합별 유의적 차이가 발생하지 않았다. 4년간의 건물수량을 살펴보면 국내 목초를 이용한 혼파조합인 T3 (7,633 kg ha-1)와 T4 (7,570 kg ha-1)는 수입목초를 이용한 혼파조합 T1 (6,950 kg ha-1)과 T2 (6,934 kg ha-1)보다 높게 나타났다. 따라서 중북부(평창) 지역에서는 초종별 파종 비율보다는 국내 국외품종에 의한 영향이 수량에 더 큰 영향을 주었으며 국내품종이 상대적으로 영속성이 우수하게 나타났으며 초지의 영속성과 건물생산성을 향상시키기 위해서는 국내개발 오차드그라스 위주 혼파조합이 유리한 것으로 나타났다.

Keywords

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