DOI QR코드

DOI QR Code

Micrometeorology Analysis of Pear Orchard with Anti-insect Nets for Non-bagged Cultivation

망 시설 유무에 따른 배 과원의 미기상 분석

  • Yu, Seok-cheol (Disaster Prevention Division, Department of Agricultural Engineering, National Institute of Agricultural Sciences) ;
  • Choi, Jin-ho (Pear Research Institute, National Institute of Horticultural and Herbal Science) ;
  • Lee, Han-chan (Pear Research Institute, National Institute of Horticultural and Herbal Science) ;
  • Lee, Ug-young (Pear Research Institute, National Institute of Horticultural and Herbal Science)
  • 유석철 (국립농업과학원 농업공학부 재해예방공학과) ;
  • 최진호 (국립원예특작과학원 배연구소) ;
  • 이한찬 (국립원예특작과학원 배연구소) ;
  • 이욱용 (국립원예특작과학원 배연구소)
  • Received : 2018.12.10
  • Accepted : 2019.04.12
  • Published : 2019.04.30

Abstract

This study was carried out to investigate at the micrometeorology change of the orchard according to the net installation. Two weather stations were installed at the inside of the anti-insect nets(2 mm, 4 mm), one was installed at the outside(control). They were observed the temperature, humidity, wind speed and solar radiation from April to September 2018. Daily mean temperature at the experimental group was higher than control group by $0.2^{\circ}C$. Daily mean humidity at the experimental group was higher than control group by 3.5 to 4.7%. Daily mean the solar radiation at the experimental group(2 mm) was lower than control group by 50%. The wind speed was decreased from 12% to 50% of the external wind speed at 4 mm, and from 25% to 59% at 2 mm.

본 연구는 방충망 시설이 생육환경에 미치는 영향을 구명하기 위한 기초자료로 활용되도록 무봉지 재배를 위한 망 시설 테스트베드를 설치하고 온도, 습도, 풍속 및 일사량을 수집한 기상자료를 분석하여 망 시설 내 외부의 미기상 특성을 확인하고자 하였으며, 기상자료를 분석한 결과는 다음과 같다. 온도와 습도의 경우 망의 피복 여부에 따라 $0.2^{\circ}C$, 3.5~4.7%의 차이가 발생하였으며 실험구 대비 대조구에서 수분부족분이 증가하는 경향을 보였다. 외부와 망 시설 내부에서 일사 투과율은 격자크기에 따라 큰 차이를 나타냈다. 특히 격자 크기가 2mm인 경우 외부와의 일사 투과율이 최대 50%정도까지 감소하는 것으로 나타났으며, 이는 과실 생육에 큰 영향을 미칠 수 있기 때문에 격자 크기 선택에 있어서 고려해야할 요소로 판단된다. 태풍 솔릭 내습시의 망 시설 내?외부의 풍속을 비교한 결과, 7 m/s이상의 고풍속일 때 격자 크기가 4 mm 망 시설은 40% 이상, 2 mm의 경우 50% 이상의 풍속 감소율을 보였다. 또한 풍속저감 효과로 인한 낙과 피해도 현저하게 감소하는 것으로 나타났다. 이러한 연구결과는 망 피복에 따른 과수의 생육환경에 미치는 영향과 최근에 잦은 이상기상 발생으로 망 시설을 적용한 이상기상 피해저감 효과 등의 기초자료로 활용될 수 있을 것으로 판단된다.

Keywords

References

  1. Bogren, J. and T. Gustavsson. 1991. Nocturnal air and road surface temperature variations in complex terrain. International Journal of Climatology. 11:443-445. https://doi.org/10.1002/joc.3370110408
  2. Cho, Y. S., H. S. Choi, W. S. Kim, J. A. Jo, Y. J. An, H. J. Jee, and Y. I. Kuk. 2012. Frost protection during flowering of 'Niitaka'pear trees as affected by heating and sprinkler. The Korean Society of International Agriculture 24:60-64(in Korean).
  3. Han, J. H., I. C. Son, I. M. Choi, S. H. Kim, J. G. Cho, S. K. Yun, H. C. Kim, and T. C. Kim. 2013. Relationship between yearly fruit growth and climatic factors in 'Niitaka' pear. Horticultural Science & Technology 31:8-13(in Korean). https://doi.org/10.7235/hort.2013.12117
  4. Jeong, W. J., D. J. Myoung, and J. H. Lee. 2009. Comparison of climatic conditions of sweet pepper's greenhouse between korea and the netherlands. Protected Hort. Plant Fac. 18:244-252(in Korean).
  5. Kim, M. R. and S. G. Kim. 2014. Examining impact of weather factors on apple yield. Korean Journal of Agricultural and Forest Meteorology 16: 274-284(in Korean). https://doi.org/10.5532/KJAFM.2014.16.4.274
  6. Kim, Y. H., S. W. Kang, Y. Paek, J. K. Jang, J. H. Sung, and Y. K. Kang. 2018. Investigation and greenhouse heat loss based on areas and weather information. Protected Hort. Plant Fac. 27:64-70(in Korean). https://doi.org/10.12791/KSBEC.2018.27.1.64
  7. Korner, O. and H. Challa. 2003. Process based humidity control regime for greenhouse crops. Com. Elec. Agr. 39;173-192. https://doi.org/10.1016/S0168-1699(03)00079-6
  8. Nam, S. W. and G. H. Ko. 2013. Analysis structural types and design factors for fruit tree greenhouses. Protected Hort. Plant Fac. 22:27-33(in Korean). https://doi.org/10.12791/KSBEC.2013.22.1.027
  9. Shim, K. M., M, D. Kim, Y. S. Kim, M. P. Jung, H. Hwang and S. C. Kim. 2013. Meteorological analysis of installation effects of a windbreak net on reducing wind speed at an apple orchard. Korean Journal of Agricultural and Forest Meteorology 15:298-303(in Korean). https://doi.org/10.5532/KJAFM.2013.15.4.298
  10. Sugiura, T., H. Honjo, S. Ono, T. Asakura, F. Kamota, and F. Sakuma. 1993. Modeling relationship between japanese pear fruit growth and solar radiation. J. Agr. Met 48:329-337. https://doi.org/10.2480/agrmet.48.329
  11. Yeom, S. S., D. G. Choi, and J. H. Song. 2011. Effect of windbreak net on growth, fruit quality, and pest control of Pear. Journal of Agriculture & Life Sciences 42:27-32(in Korean).
  12. Yim, J. H., Y. M. Choi and D. G. Choi. 2014. Effect of wind velocity on photosynthesis, sap flux, and damage of leaves in apple trees. Korean Journal of Agricultural and Forest Meteorology 16:131-136(in Korean). https://doi.org/10.5532/KJAFM.2014.16.2.131
  13. Yim, S. H., K. S. Cho, J. H. Choi, J. H. Lee, U. Y. Lee, H. J. Seo, B. L, and S. S. Kang. 2017. Characteristics of non-bagging pear fruit according to cultivars of different ripening time and fruit skin color. Horticultural Science & Technology 35:125(in Korean).
  14. Yu, G., J. C. Kim, and S. H. Guak. 2006. Effect of cultivation time on the incidence of brown fruit stem of glasshouse sweet pepper(capsicum annuum L.). Protected Hort. Plant Fac. 15:162-166(in Korean).
  15. Yu, I. H., E. H. Lee, M. W. Cho, H. R. Ryu, and D. G. Moon. 2014. Development of rain shelter for chinese cabbage rainproof cultivation. Protected Hort. Plant Fac. 23:293-302(in Korean). https://doi.org/10.12791/KSBEC.2014.23.4.293
  16. Yum, S. H., and S. H. Kang. 2013. An experimental study on characteristics of pressure drop of screens used in horticultural facilities. Journal of Korean Society of Agricultural Engineers 55:31-35(in Korean).
  17. Yum, S. H., S. H. Kang, S. H. Kim, S. B. Lee and M. Y. Kim. 2011. Effects of an anti-wind net on wind velocity reduction by a wind tunnel test and CFD. Journal of Biosystems Engineering 36:355-360(in Korean). https://doi.org/10.5307/JBE.2011.36.5.355