초록 ▼

Ⅳ. 연구개발결과
○ 식물공장에 적합한 작물 선발 및 양액관리 방안
- 10종의 식물공장에서 생산성이 좋은 작물 선발
- 식물공장에서 저칼륨 채소를 생산하기 위한 양액관리
○ 식물공장 최적생산을 위한 환경 관리 기술 개발
- 광원 선택에 따른 식물공장 채소 생산성 분석 및 제시
- LED 적용한 식물공장에서 작물 생산 효과
- 반사갓 및 반사판 이용에 따른 식물공장 광원 효율 증진
- 식물공장에서 온도 및 일장 관리 관리 기술 방안
- 식물공장에서 탄산가스 농도에 따른 작

Ⅳ. 연구개발결과
○ 식물공장에 적합한 작물 선발 및 양액관리 방안
- 10종의 식물공장에서 생산성이 좋은 작물 선발
- 식물공장에서 저칼륨 채소를 생산하기 위한 양액관리
○ 식물공장 최적생산을 위한 환경 관리 기술 개발
- 광원 선택에 따른 식물공장 채소 생산성 분석 및 제시
- LED 적용한 식물공장에서 작물 생산 효과
- 반사갓 및 반사판 이용에 따른 식물공장 광원 효율 증진
- 식물공장에서 온도 및 일장 관리 관리 기술 방안
- 식물공장에서 탄산가스 농도에 따른 작물의 생육 반응 및 관리 방안
○ 식물공장에서 태양에너지를 이용한 에너지 절감 연구
- 식물공장에서 태양 에너지 이용한 에너지 절감
- 식물공장에서 태양 에너지 이용한 에너지 절감 효과

Abstract ▼

Plant factory is a new plant production system that enables high quality, year-round and planned production by controlling the environment. The objectives of this study were to select suitable leafy vegetables for a closed plant factory system with LED light and to evaluate the possibility of year-r

Plant factory is a new plant production system that enables high quality, year-round and planned production by controlling the environment. The objectives of this study were to select suitable leafy vegetables for a closed plant factory system with LED light and to evaluate the possibility of year-round production through four consecutive cultivation of the selected leafy vegetables, and to develop the nutrient management technology for reduction of potassium content in hydroponically-grown leafy vegetables, green leaf lettuces ('Cheongchima'), pakchoi plants, etc. in a closed plant production system. To achieve this, the leafy vegetables were grown under artificial light provided by LEDs (Red+Blue=2:1) with a PAR of about 200μmol·m-1s-1 under controlled environment condition and grown in a DFT (deep flow technique) hydroponic system with the nutrient solution of ‘Asteraceae’, ‘Cruciferae’, and ‘Chenopodiaceae’ developed by the National Institute of Horticulture Science, RDA in Korea. In third year of this study, effects of nutrient composition of potassium removal for 6 and 11 days before harvest on potassium contents in plants was investigated in hydroponically-grown leafy vegetables. In first year of this study, 10 leafy vegetables suitable for closed plant factory were selected because of good growth and yield characteristics. In second year, the possibility of year-round production of the selected leafy vegetables was proved through four consecutive cultivation in a controlled environment condition. In cultivation of leafy vegetables in closed hydroponic system, the potassium contents of green leaf lettuces ('Cheongchima'), Pakchoi, and Ssamchu grown in the nutrient solution with nitrate nitrogen removal for 11 days before harvest were 46.7∼78.1% lower than the control treatment with standard nutrient solution without causing any deterioration in growth and quality.
The purpose of this study was to develop environmental control technology in plant factory. To develop the technology of environmental control in plant factroy, we accomplish the experiment of light, temperature, and CO₂. The growth of lettuce and beet was better in mixed LED treatment (8:2, Red: Blue) than other treatment and their growth in its mixed pulse was bad. The management of monthly photoperiod and temperature using heat balance analyzing was showed. When it was applied in plant factory, the growth had no difference and it enable to save 17% energy. Leaf area and fresh weight of basil was best in the treatment of 1500ppm CO₂ concentration, and the growth of beet was best in the treatment of 1500ppm CO₂ concentration.
The purpose of this study was to develop energy saving technology using solar power. Solar power conversion system has very high correlations with solar radiation. Solar radiation is highest in springtime, and south region is a higher than middle region. Therefore, solar power conversion system is considered the most favorable in springtime, in the south region. When installing a 3kW-class solar power conversion system, It was analysed that monthly average power output was 157kWh. At this point, economic analysis of solar power conversion system showed that benefit factors were small compared to the hand performance factors. But solar energy is a clean energy and has a number of advantages. Therefore, additional research to use in agriculture should be progressed steadily.