Korean Journal of Agricultural and Forest Meteorology (한국농림기상학회지)

Korean Society of Agricultural and Forest Meteorology (한국농림기상학회)
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A Simple Emergence Model of Southern Type Garlic Based on Temperature

온도에 따른 난지형 마늘 출현 모형

  • Moon, K.H. (Agricultural Research Center for Climate Change, National Institute of Horticultural & Herbal Science, RDA) ;
  • Choi, K.S. (Agricultural Research Center for Climate Change, National Institute of Horticultural & Herbal Science, RDA) ;
  • Son, I.C. (Agricultural Research Center for Climate Change, National Institute of Horticultural & Herbal Science, RDA) ;
  • Song, E.Y. (Agricultural Research Center for Climate Change, National Institute of Horticultural & Herbal Science, RDA) ;
  • Oh, S. (Agricultural Research Center for Climate Change, National Institute of Horticultural & Herbal Science, RDA)
  • 문경환 (국립원예특작과학원 온난화대응농업연구센터) ;
  • 최경산 (국립원예특작과학원 온난화대응농업연구센터) ;
  • 손인창 (국립원예특작과학원 온난화대응농업연구센터) ;
  • 송은영 (국립원예특작과학원 온난화대응농업연구센터) ;
  • 오순자 (국립원예특작과학원 온난화대응농업연구센터)
  • Received : 2014.10.31
  • Accepted : 2014.11.09
  • Published : 2014.12.30
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Abstract

We developed a simple model to predict emergence time and emergence rate of southern type garlic using the daily mean temperature. Emergence rate of garlic was decreased and emergence time was delayed on higher temperature than optimum temperature of $12.7^{\circ}C$. In the model, firstly daily emergence rate was calculated using a beta function to input daily mean temperature, then the percentage of garlic emergence was calculated using a nonlinear model with accumulated emergence rate. The model was good to describe the experimental data of growth cabinet. Also it can explain well the experimental data using temperature gradient tunnel, designed for verification of model performance. But there are 5 days of deviation between estimated and measured time of garlic emergence on the field experiment. More research is needed to develop an advanced model considering other factors, such as soil moisture.

일 평균기온을 이용하여 난지형 마늘의 출현시기와 출현율을 일별로 예측하는 동적 모형을 개발하였다. 난지형 마늘은 최적온도인 $12.7^{\circ}C$보다 증가하면서 출현율과 출현속도가 감소하였다. 일 평균기온을 입력하여 난지형 마늘의 일별 출현속도를 예측할 수 있는 베타함수와, 출현속도를 누적하여 마늘 출현율의 변화를 예측하는 비선형 모형을 개발하였다. 개발된 모형으로 생장상의 실험결과를 잘 설명할 수 있었다. 모형을 재배기간 온도조건이 다른 온도구배터널에 적용해본 결과 온도구배터널 재배 마늘의 출현시기와 출현율을 비교적 잘 예측할 수 있었다. 그러나 노지 포장에서는 모형에서는 출현시기가 실제 관측된 것보다 5일 정도 빠를 것으로 예측되어 토양수분 등 온도이외의 다른 요인을 반영할 수 있도록 모형의 개선이 필요하였다.

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References

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