• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1996.10a
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• pp.60-63
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• 1996

참외의 시설재배는 초기에 소형 턴넬재배로 부터 시작하여 '95년 현재 전체 재배면적 11,999㏊ 가운데 시설재배가 81.2%인 9,745㏊에 달하여 시설재배가 주류를 이루고 있다. 그러나 그 재배시설은 대부분 단동하우스내에서 소형턴넬을 이용하는 무가온 보은재배형태이기 때문에 환경관리가 부적절한 실정이다. 특히 최근 고당도 신품종보급과 함께 연중 생산ㆍ소비추세의 영향으로 (중략)

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1999.11a
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• pp.104-108
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• 1999

1998년말 현재 우리나라의 시설원예 면적은 48,612ha이고 전체의 90.2%인 43,852ha가 단동비닐온실을 비롯한 관행온실이고, 9.8%인 4,760ha만이 자동화 온실이다. 관행의 단동비닐온실은 태양광에 의존하여 무가온으로 재배하고 있으며, 대부분 2중 하우스로 하거나 내부에 터널을 설치하여 보온덮개를 개폐하는 방식의 보온을 위주로 하여 온실의 온도를 관리한다. (중략)

• Proceedings of the Korean Society of Crop Science Conference
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• 2019.09a
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• pp.70-70
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• 2019

• Korean journal of applied entomology
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• v.54 no.3
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• pp.247-255
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• 2015

The cotton aphid, Aphis gossypii Glover (Hemiptera: Aphididae) infests citrus orchards, causing sooty mold damage to the fruits. This study was conducted to investigate the colonizing route of A. gossypii in citrus orchards in a non-heating plastic-film house during the early season. The overwintering eggs of the aphids are frequently found on summer shoots of the citrus trees. The eggs were mostly those of Aphis citricola, without any A. gossypii when hatched. The colonization of citrus trees by alate A. gossypii in non-heating plastic-film houses was mainly observed twice, with advanced flight in late April and delayed flight in late May. The delayed flight was synchronized with the timing of the emergence of alate A. gossypii from the fundatrix generation in the holocyclic life cycle. During advanced flight in closed citrus orchards, alate A. gossypii were caught in yellow water traps installed in the fields, and the populations were found to originate from the surviving populations of the anholocyclic life cycle. Consequently, we concluded that citrus tree colonization with A. gossypii occurred during the advanced flight of the anholocyclic and the delayed flight of the holocyclic life cycle.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1999.04a
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• pp.87-91
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• 1999

봄철 하우스 수박 무가온 조숙재배에 알맞는 보온방법을 개발하고자 아취형 단동하우스에 PE필름터널, 유공필름＋축열물주머니, 유공필름터널＋부직포터널구를 처리하고, 삼복꿀수박을 '98년 3월 23일 정식하여 4월 27일까지 36일간 터널피복재의 보온성을 검토한 결과는 다음과 같다. (1) 보온재 피복 재배 기간중 터널내 최저온도는 PE터널구 10.9$^{\circ}C$에 비하여 유공필름터널에 축열물주머니구와 부직포터널구는 각각 0.9, 2.1$^{\circ}C$ 높았다. (2) 3월하순 활착기의 하우스내 일사량은 실외 175.2w/$m^2$ 비하여 124.2w/$m^2$로 51w/$m^2$ 낮았다. (3) 터널피복재 환기작업에 따른 소요 노동력은 PE터널구 25.2시간/10a/36일에 비하여 유공필름터널＋부직포터널구는 32.4시간으로 7.2시간/10a/36일 증가하였으나, 유공필름터널＋축열물주머니는 개폐작업으로 인한 투하 노동력이 없었다. (4) 터널재배 기간중 유공필름터널＋부직포터널구가 초기생육이 촉진되었으며, 생육후기에 발생한 흰가루병 이병엽율은 2.8%로 현저히 감소하였다. (5) 수박의 수확기는 PE필름터널구 6월 22일에 비하여 유공필름터널＋축열물주머니와 부직포터널구는 6월 12, 15일로 7, 10일 앞당겼으며, 수량은 PE터널구 2,385kg/10a에 비하여 20, 32% 각각 증수하였다.

• Korean Journal of Soil Science and Fertilizer
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• v.30 no.4
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• pp.357-360
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• 1997

To fine out the concentration of $SO_2$ gas in plastic film house, the survey was conducted at 343 sites throughout the nation. The $SO_2$ concentration in plastic film house were similar both heating and non-heating, but $SO_2$ cocentration higher than 0.8ppm was detected at those with heating. The $SO_2$ concentration in plastic film house cultivated red-pepper higher than those of cucumber or tomato cultivation, and it was produced higher amounts at day time than night due to the higher temperature. In plastic film house with heating, $SO_2$ was leaked at brocken parts of heater and joint of stove pipe, sometimes, $SO_2$ discharged from smokestack was resucked with air. $SO_2$ concentration in the plastic film house with and without ventilation were 0.2 and 0.6ppm, respectively.

• Journal of Bio-Environment Control
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• v.19 no.1
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• pp.25-30
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• 2010

This experiment was carried out to investigate the effect of planting times on the growth and yield of artichoke (Cynara scolymus L.) in non-heated greenhouse in Jeju Island ($33^{\circ}28.110N,\;126^{\circ}31.076E$), Korea. Five transplanting dates (from Feb. 25 to Apr. 30) of the first half of the year and six transplanting dates (from July 30 to Dec. 15) of the second half of the year were compared. In the spring cycle, most of the flower buds emerged from May to June, and the emergence was slightly earlier in 'Imperial Star' than in 'Green Globe'. The earliest harvest on June 16 was 'Imperial Star' which was planted on Feb. 25. The highest yield of 856 kg/10a was observed in 'Imperial Star' which was planted on Feb. 25. Transplanting of the first half of the year, it was impossible to harvest in the same year when the planting was done after April 15 since the flower buds were not emerged. The flower buds emerged from late Feb. to middle April of the following year in the all planting times of the second half of the year. It was possible to harvest the first time in early April. The highest yield was 2,127 kg/10a in 'Green Globe' which was planted on July 30, and the yields decreased as the planting times were delayed. In the comparisons of planting times of artichoke, it would be recommendable to plant artichoke on Feb. 25 for the same year harvest and in July 30~Oct. 15 for the following year harvest in Jeju Island non-heated greenhouse cultivation.

• Journal of Bio-Environment Control
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• v.25 no.3
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• pp.212-217
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• 2016

This study was conducted to investigate the effect of nursery period on growth and yield attribute of green papaya (var. Red lady). The nursery period was 3, 5, 7, 9, 11 and 13 months and the green papaya was transplanted on 15 April, 2015 in a non-heated greenhouse. The plant height, node number and fresh weight of nursery plant were increased as the nursery periods increased. The growth of green papaya with 13 months nursery period was better than those of other treatments. First harvest after transplanting was increased as the nursery periods were shorten. It took 137 days (18 August) at 13 months treatment, and 184 days (2 October) at 3 months treatment. The fruit length and diameter were smallest at 3 months treatment and there was no significant difference among other treatments. The fruit yield was also influenced by the nursery periods, the commercial yield was also increased as the nursery periods increased. The commercial yield was highest at 13 months treatment (3,172kg/10a), followed by 11 (2,247kg/10a) and 9 months treatment (2,357kg/10a). At 7 and 5 months treatment were 1,942kg/10a and 1,787kg/10a, respectively and the yield was lowest at 3 months treatment (1,443kg/10a). The commercial yield was significantly decreased under 7 months treatment. Although the harvest time of 11 months treatment was earlier than that of other treatments in non-heated greenhouse, 9 month treatment will be more recommendable for green papaya production because of operating costs.

• Current Research on Agriculture and Life Sciences
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• v.2
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• pp.91-97
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• 1984

This study was performed to suggest the basic information for the development of covering method for increasing the effect of heat conservation in the unheated vinyl houses. Double and single covered vinyl houses were constructed and the inside temperature variation of the double covered vinyl house was compared to the single covered vinyl house. The results obtained for the vinyl houses were summarized as follows ; 1. With the outside temperature of $-1.0^{\circ}C{\sim}7.5^{\circ}C$ and the solar radiation of maximum $1.02MJ/m^2$, the double covered vinyl house was shown $1.2^{\circ}C$ higher than the single covered vinyl house in the daily mean of inside temperature. 2. The inside temperature of the double covered vinyl house was $2.3^{\circ}C$ higher in the daytime and $1.2^{\circ}C$ higher in the nighttime than that of the single covered vinyl house. 3. The inside temperature of the vinyl house were expressed by the formular (1)-(6) with the outside temperature and by the formular (7)-(10) with the solar radiation. 4. In the effect of heat conservation based on the outside temperature, the double covered vinyl house was 1.2 times in the daytime and 1.76 times in the nighttime in comparison with the single covered vinyl house.

• Journal of Bio-Environment Control
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• v.23 no.4
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• pp.349-355
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• 2014

This study was performed to evaluate influences of tunnel covering materials and seeding dates on the growth and productivity of water spinach (Ipomoea aquatic F.) cultured early in unheated greenhouse. During tunnel installation period, from March 5 to April 30 and from October 11 to November 10, air and soil temperature in tunnel covered with polyethylene film (PEF) had risen $2.0-2.4^{\circ}C$ and $0.9-1.0^{\circ}C$, respectively, compared to those in non-tunnel (NT). Air and soil temperature in tunnel with illite non-fabric (INF) also had risen $1.6-1.8^{\circ}C$ and $0.6-0.8^{\circ}C$, respectively. Especially, it showed greater effects of the rise at low temperature time zones of the day. In plots of seeding on March 15 in tunnel covered with PEF or INF, temperature during emergence period, emergence days and rate were similar to plot seeding on April 5 in NT. There were two more harvesting in plots of seeding on March 5 or March 15 in tunnel, and increasing of total yield by 22.5-25.7% compared to plot of seeding on April 5 in NT. But there was observed no significant differences between PEF and INF. Whereas PEF was necessary to be removed at midday sometimes because it had risk of high temperature injury, INF was not necessary. All above suggest that it was suitable to sow seed on the middle of March in tunnel covered with INF, for early culture of water spinach in unheated greenhouse.