This study was conducted to apply with an air duct for the cooling and a utilizing cultivating method that uses the fruiting node and the defoliation to the high-temperature vertical and hydroponic cultivation of the oriental melon. The lower fruiting node (LF) was to remove all third vines generated from 5 nodes of a secondary vine. The higher fruiting node (HF) was fruiting on the third vine generated from a first node of the third vine. The direction of the stem string; upward (UW), downward (DW). Four treatment conditions were applied with the LF-UW, LF-DW, HF-UW (control), and HF-DW. The leaf age of melon leaves was measured for photosynthesis at 3 days intervals, and the fruit characteristic was conducted on 79 fruits in each treatment. The photosynthesis rate steadily increased after leaf development, reaching 20.8 μmol CO2·m-2·s-1 on the 10 days, gradually increasing to 21.3 μmol CO2·m-2·s-1 on the 19 days, and reaching 23.4 μmol CO2·m-2·s-1 on the 32 days. After that, it lowered to 16.8 μmol CO2·m-2·s-1 on the 38 days and dropped significantly to 7.6 μmol CO2·m-2·s-1 on the 47 days. As a result of the fruit characteristics by fruiting nodes, the treatments of the fruit length was 12.6-13.4 cm, respectively, which was significant, and the fruit width was 7.9- 8.6 cm, respectively, was not significant. The soluble content ranged from 12.9 to 15.7°Brix, and the significance of all treatments, and higher than of LF-DW and HF-UW. The photosynthesis rate of melon leaves was good until 32 days after leaf development, but after that, the rate decreased. As for fruit quality, it was conformed that melons can be cultivated at the LF because the fruit enlargement and soluble content dose not decrease even when set at the LF. Results indicated that those can be used for LF and defoliation in the development of vertical and hydroponic cultivation method in high-temperature season.

Abstract
서 론
재료 및 방법
    1. 시험재료 및 재배조건
    2. 송풍덕트
    3. 광합성 조사
    4. 과실 특성 조사
    5. 통계분석
결과 및 고찰
    1. 송풍 덕트 온실 내부 환경 특성
    2. 광합성 특성
    3. 과실 특성
적 요
사 사
Literature Cited

• 홍영신(국립농업과학원 농업공학부 박사후연구원) | Youngsin Hong (Postdoctoral Researcher, Division of Agricultural Engineering, National Institute of Agricultural Sciences)
• 박소현(국립농업과학원 농업공학부 연구원) | Sohyun Park (Assistant Researcher, Division of Agricultural Engineering, National Institute of Agricultural Sciences, RDA)
• 윤성욱(국립농업과학원 농업공학부 농업연구사) | Sungwook Yun (Research Officer, Division of Agricultural Engineering, National Institute of Agricultural Sciences, RDA)
• 권진경(국립농업과학원 농업공학부 농업연구사) | Jinkyung Kwon (Research Officer, Division of Agricultural Engineering, National Institute of Agricultural Sciences, RDA)
• 이시영(국립농업과학원 농업공학부 농업연구관) | Siyoung Lee (Senior Research Officer, Division of Agricultural Engineering, National Institute of Agricultural Sciences, RDA)
• 이상규(국립농업과학원 농업공학부 농업연구관) | Sanggyu Lee (Senior Research Officer, Division of Agricultural Engineering, National Institute of Agricultural Sciences, RDA)
• 문종필(국립농업과학원 농업공학부 농업연구사) | Jongpil Moon (Research Officer, Division of Agricultural Engineering, National Institute of Agricultural Sciences, RDA)
• 장재경(국립농업과학원 농업공학부 농업연구사) | Jaekyung Jang (Research Officer, Division of Agricultural Engineering, National Institute of Agricultural Sciences, RDA)
• 배효준(국립농업과학원 농업공학부 연구원) | Hyojun Bae (Assistant Researcher, Division of Agricultural Engineering, National Institute of Agricultural Sciences, RDA)
• 황정수(국립농업과학원 농업공학부 농업연구사) | Jeongsu Hwang (Research Officer, Division of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) Corresponding Author