Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Characteristics of Reflective Light over Red and Black Plastic Mulch, and Effect on the Quality and Yield of the Oriental Melon and Tomato

적색 비닐멀칭과 흑색 비닐멀칭의 반사광 특성과 참외와 토마토의 품질과 수량에 미치는 영향

  • Hong, Seung-Chang (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Heo, Jeong-Wook (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Lee, Jeong-Taek (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Kang, Kee-Kyung (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA)
  • 홍성창 (농촌진흥청 국립농업과학원) ;
  • 허정욱 (농촌진흥청 국립농업과학원) ;
  • 이정택 (농촌진흥청 국립농업과학원) ;
  • 강기경 (농촌진흥청 국립농업과학원)
  • Received : 2011.10.28
  • Accepted : 2011.12.23
  • Published : 2011.12.31
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Abstract

BACKGROUND: Plastic mulches widely used in raised-bed culture mainly to conserve water, control weeds and raise soil temperature. The most widely used plastic mulch colour is black. Reflective red and far-red light can affect on growth and yield of various vegetable crops. Objectives of this study were to investigate the characteristics of reflective light of black and red plastic mulches, and to evaluate the reflective red and far-red light on the quality characteristics and yield of the Oriental melon (Cucumis. Melo L.) and tomato (Lycopersicon esculentum L.). METHODS AND RESULTS: Oriental melon and tomato were cultivated over the reflective red and black plastic mulches in plastic house. Reflected red and far-red light over the red plastic mulch were 2.6 times higher than those of black plastic mulch. Red to F-Red ratio of black plastic mulch, red plastic mulch and sunlight were 1.14, 0.93 and 1.16 respectively. Intensity of reflected red and far-red light over red plastic mulch were highest at surface height of 30 cm. The higher the height of the surface decrease the intensity of far-red light. Accordingly, Red to F-Red ratio were increased. Reflective red plastic mulch increased the weight of fruit and content of sugar in Oriental melon and tomato. CONCLUSION(s): Yield of Oriental melon over reflective red plastic mulch was higher than that of black plastic mulch. These results suggested that reflected red and far-red light over the red plastic mulch affected allocation of photosynthate in growing Oriental melon.

우리나라에서 주로 사용되고 있는 흑색 비닐멀칭과 신개발된 적색 비닐멀칭의 표면 반사광 특성을 분석하고 참외와 토마토에 대한 영향을 구명하여 작물생산에 대한 적용 가능성을 검토하였다. 적색 비닐멀칭의 표면에서 반사된 적색광과 초적색광의 일일 누적 강도는 흑색 비닐멀칭보다 2.6배 강했다. 적색광과 초적색광 반사광의 강도는 적색 비닐멀칭의 표면 높이 30 cm에서 가장 강하였다. 일중 태양광 강도가 강한 오후 1시 20분의 흑색 비닐멀칭의 Red/F-Red는 1.14, 적색 비닐멀칭은 0.93, 태양광은 1.16으로 적색 비닐멀칭이 흑색 비닐멀칭보다 초적색광 강도가 높았다. 적색 비닐멀칭의 Red/F-Red는 표면 높이 30 cm에서 가장 낮았으며 표면높이가 높아질수록 초적색광 강도가 감소하여 Red/F-Red는 증가하였다. 적색 비닐멀칭 반사광의 Red/F-Red는 정오부터 오후 4시경까지는 흑색 비닐멀칭보다 낮게 경과하였다. 흑색 비닐멀칭 처리구보다 적색 비닐멀칭 처리구의 참외 과실의 무게가 증가하여 수량이 증가하였고 당도가 높았다. 토마토의 과실 무게와 당도도 적색 비닐멀칭 처리가 흑색 비닐멀칭 처리구보다 높았다. 지중온도는 적색 비닐멀칭 처리가 흑색 비닐멀칭 처리보다 다소 낮은 경향이었다. 따라서 적색 비닐멀칭으로 토양을 피복하면 작물생산에 적색광과 초적색광을 더 많이 이용할 수 있을 것으로 판단된다.

Keywords

References

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