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Effects of Seeding Rate and Nitrogen Fertilizer Level on Growth and Seed Productivity of Rye Cultivar in Sancheong Province

산청지역에서 파종량 및 질소 시비량에 따른 호밀의 생육과 종실 수량

  • Kim, J.S. (Hyojin Biobank Agriculture Co., LTD.) ;
  • Kim, J.J. (Department of Food Crops, Korea National College of Agriculture and Fisheries) ;
  • Han, O.K. (Department of Food Crops, Korea National College of Agriculture and Fisheries)
  • 김종성 (효진바이오뱅크(주)) ;
  • 김진진 (국립한국농수산대학 교양공통과) ;
  • 한옥규 (국립한국농수산대학 식량작물학과)
  • Received : 2020.11.04
  • Accepted : 2020.12.04
  • Published : 2020.12.28

Abstract

This experiment was conducted at Sancheong from 2013 to 2015. The objective of this study was to establish the seeding rate, and to clarify the optimum nitrogen fertilizer level for rye seed production in the southern area of Korea. We employed Korean rye cultivar 'Gogu' in this test. The experimental design was a split-plot design with three replications. A split-plot design was used with three seeding levels (3, 5, and 7 kg 10 a-1) on the main plots and other treatments fully randomized in sub-plots. A factorial arrangement of treatments included three different nitrogen fertilizer levels (0, 3, 6, and 9 kg 10 a-1). The grain yields of rye affected by increasing the seeding rate. The number of spike per m2 and immature grain weight was increasing, while the fertility rate and the number of grain per spike were decreased as seeding rate were increased from 3 kg 10 a-1 to 7 kg 10 a-1. The percentage of a productive tiller, 1-liter weight, and 1000-grain weight also decrease by increasing seeding but the grain yields of rye had less effect. There was an increase in the number of spike per m2, the number of grain per spike, and grain yields as nitrogen fertilizer level was increased from 0 kg 10 a-1 to 9 kg 10 a-1 and followed a delaying heading and an increasing lodging of the plant. But grain yields did not affected by the interaction of seeding rate × nitrogen fertilizer levels. The best seeding rate and nitrogen fertilizer level for rye seed production were 5 kg and 3 kg 10 a-1, respectively, considering seed and fertilizer reduction and the prevention of pollution by excess fertilization.

국내에서 소비지역에 필요한 호밀 종자를 생산하기 위해 경남지역에 적합한 종자 채종기술을 개발하고자 2013~2015년까지 3개년에 걸쳐 경상남도 산청에서 시험을 실시하였다. 품종은 국내 육성종인 곡우호밀을 사용하였고, 시험구는 파종량 3수준(3, 5, 7 kg 10 a-1), 질소시비량 4수준(0, 3, 6, 9 kg 10 a-1)의 분할구배치법 3반복으로 하였으며, 생육특성과 종실 생산성을 평가하였다. 호밀 종자의 파종량을 3 kg 10 a-1로부터 7 kg 10 a-1로 증가시킴에 따라 설립중이 증가하고 임실률과 1 수립수가 감소하였지만 m2당수수가 증가하여 전체 수량이 증가하는 경향이었다. 그리고 유효경비율, 리터중, 1000립중이 다소 감소하였으나 수량에는 영향이 크지 않았다. 질소 시비량을 무비로부터 9 kg 10 a-1로 증가시킴에 따라 출수기가 늦어지고 도복이 다소 증가하지만, m2당수수와 1수립수가 많아져서 수량이 증가하였다. 그리고 호밀의 종실 수량은 파종량과 질소 시비량 간에 교호작용을 보이지 않았다. 호밀의 종실 수량, 파종용 종자 비용과 질소 과잉 시비에 따른 환경오염, 도복 등을 고려할 때 산청지역에서 호밀 종자생산을 위해 적합한 파종량은 5 kg 10 a-1, 질소 시비량은 3 kg 10 a-1로 추천되었다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 연구사업(세부과제 : 경남지역에서 호밀채종시험 및 종자생산 관여요인 분석, 과제번호: PJ00922405)의 지원에 의해 이루어진 것임

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