살수방식에 따른 재배용기내 Gas 조성 및 콩나물의 생육 변화

The growth of soybean sprout was greatly influenced by watering systems: Fixed watering system (water tub was loaded at ceiling upper of culture box and water was showered by bottom holes) was estimated the better than that of reciprocating watering and tub immersing watering because it could cool down the temperature in culture box and wash the organic substances on the body of sprout. The fixed watering system showed good body color and preventing effect of partial rotting of sprout because it could discharge CO₂ gas effectively in culture box and keep the concentration below 5%. The concentration of gases at the bottom (about 30 cm height from basal plate) of culture box in fourth or fifth days was 4-6% for CO₂ and 13-16% for O₂, respectively. The optimum gas concentration in culture box was considered to be over 10% for O₂ and below 5% for CO₂.