• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2002.04a
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• pp.110-114
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• 2002

단동형 비닐하우스는 연동형 비닐하우스에 비해 생력화 및 자동화가 미흡한 재배시설이다. 그러나 전국 시설면적 52,189 ha 중 90%이상이 단동형 비닐하우스로서 대부분 초기투자 부담이 적고 파이프를 이용하여 손쉽게 설치할 수 있는 단동형 비닐하우스를 선호하고 있는 실정이다. 단동형 비닐하우스는 각 지역의 특성에 적합한 고유형 시설로 발전하여 왔기 때문에 폭이 5-6m, 높이가 2-3.5m 정도인 대형 터널형태와 폭이 l0m 이상인 광폭형태 등 규격이 다양하게 설치되어있다. (중략)

• Journal of Bio-Environment Control
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• v.7 no.4
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• pp.311-323
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• 1998

This study was conducted to analyze the temperature characteristics under tunnel type greenhouse to cultivate watermelon in Sungju region. Air temperature of tunnel type greenhouse was descending rapidly after sunset, and the time required the air temperature inside greenhouse nearly reached the outside air temperature was about 2.5 hours. The maximum air temperature in tunnel type greenhouse, in case of high air temperature day, was exceeding 4$0^{\circ}C$ during day time. Air temperature inside greenhouse during night time could sustain about 2~3$^{\circ}C$ higher than the outside air temperature. But it was necessary to supply supplemental heat when the air temperature was below optimum growth temperature. Soil temperature in the depth of 20cm under soil surface could maintain higher than 2$0^{\circ}C$ and the variation range in a day was 3~5$^{\circ}C$, and the soil temperature descending due to irrigation was about 5~6$^{\circ}C$.

• Korean Journal of Plant Resources
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• v.4 no.2
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• pp.59-65
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• 1991

These Experiments were carried out to test the possibility of produciilg taro earlyplanting culture growing them in polyethylene vinyl house and/or polyethylene tunnneland/or polyetllylene mulching without any supplenmentary heat. Out of various combin-ation of the method of using polyethylene film, Plenty more of taro in polyetllylenehouse+tunnel+mulching on the 5th of March showed the clear possibility that tarocould be harvested on middle of july, which was harvested 3 months earlier thanwhen growing in the open culture . Therefore, it is concluded that taro could be grownas an early crop by using polyetlene film.

• Journal of Bio-Environment Control
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• v.5 no.2
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• pp.187-193
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• 1996

This experiment was conducted to investigate the influence of temperature variation by the different ventilation methods on the growth and quality of oriental melon in greenhouse of tunnel type 1. The dropping effect in temperature by ventilation types was best at type 3 and those of type 2, type 1 were in order. 2. The temperature distribution in type 3 was uniformed as air- inflow and air- outflow by wind ventilation were easier than others. Whereas the temperature of type 1 having lateral ventilation hole and type 2 having the zenith ventilation tube and lateral ventilation hole was ascended, because small ventilation area of ventilation tube and hole could not make the gravity and wind ventilation successfully. 3. When compared with air amount of three types ventilated by the temperature difference of outside and inside of tunnel type house, that of type 3 was more than those of type 1 and type 2. 4. Type 3 was better than type 2 and type 1 in lear numbers, leaf area, fruit weight, flesh thickness, malformed fruit rate, and marketable fruit rate. 5. Marketable fruit rate of all treatment at each harvesting stages was rised, as goes to the latter periods.

• Journal of Bio-Environment Control
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• v.14 no.1
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• pp.15-21
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• 2005

This experiment was carried out to investigate the effect of ridge direction (south-north) on temperature and light intensity on early growth of oriental melon under east-west oriented vinyl house cultivation. The air-temperature of minimum between north and south-ridge in the tunnel of vinyl house was $12.5^[\circ}C\;and\;11.3^{\circ}C$ and that of maximum between north and south-ridge was $36.7^{\circ}C\;and\;34.7^{\circ}C$, respectively. The minimum and maximum air-temperature of north-ridge in the tunnel of vinyl house on Feb. 15 were $12^{\circ}C\;and\;2.0^{\circ}C$ higher than those of south-ridge, respectively. The intensity of daylight between south and north-ridge was similar during 9:00-10:30 a.m., that of south-ridge was higher than north-ridge during 10:30-11:30 a.m. and that of north-ridge was higher than south-ridge during 11:30-17:30. The plant growth after 55 days of planting on the north-ridge was prominent cultivation compared to south-ridge. The female flowering and first harvesting day were earlier in north-ridge than in south ridge. The marketable fruits rate and yields (kg/10a) were $6.7\%$ and 218kg higher in north-ridge cultivation than south-ridge, respectively. Differences of marketable fruit rate and yield (kg/10a) in each ridge were significant.

• Korean Journal of Agricultural Science
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• v.4 no.2
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• pp.126-140
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• 1977

Present studies were carried out for breeding cold resistant clones of Citrus, improving overwintering techniques of Citrus in Jeju island as well as other southern region, Result obtained were as follows 1. In the vinyl house covered with two sheets of straw mat, 12 indivuals were found as non-injury and 15 were slightly injured by leaf freeging test at $-9^{\circ}C$ for 2 hours treatment. 2. In the condition of vinyl house covered with straw mat and viny film mulching and heat-in by sun-light, the inside temperature of vinyl house were not lowered below $-3^{\circ}C$ and the ground temperatura in vinyl house keeps above $0^{\circ}C$ during winter though outdoor temperature were lower by $-15^{\circ}C$(Daejeon area). 3. The vinyl tunnel inside the vinyl house and vinyl film mulching on ground position showed greater effectiveness for preventing heat loss from house but there were no significant difference between the color of vinyl film covered the tunnel. 4. In the vertical distribution of maximum temperature in vinyl house, the upper space was slightly higher than the lower position at high temperature condition, while minimum temperature was distributed as higher as the middle position, ground surface and upper position in order at low temperature condition 5. In the horizontal distribution of temperature in vinyl house, ground and surface-temperature of north side was lower than the other sides, and citrus planted within 30cm from north side wall died by cold injury and in the other side near wall appeared slight symptom of cold injury. 6. The insulating trench ($30{\times}30{\times}30cm$) packed with straw bundle installed under north wall might be effective to prevent heat loss of ground temperature. 7. In cloudy and snowy day, the temperature difference between indoor and outdoor were less, and the indoor temperature were maintained highly during night due to the effect of prevention of heat loss. 8. The highest temperature in a day was observed at about P.M. 3 both inside and outside of vinyl house and the lowest temperature was observed at about A.M. 6. The difference between the highest and lowest temperature of indoor in a sunny day was $19^{\circ}C$, compared with $9^{\circ}C$ on a cloudy or snowy day in late November. Especially, lowering of temperature in a snowy day was so less that the curve of temperature change was comparatively constant, 9. If the effective methods of citrus cultivation in vinyl house with improved clone such as hardiness. semi-dwarf and spur type are applied, it might be possible to cultivate the citrus tree safely in Jeju island as well as other southern rejion and to magnity the cultivation of citrus tree.