Departmental Bulletin Paper CO2 濃度,気温および湿度制御が異なる環境管理様式が トマトの乾物生産および分配に及ぼす影響

岩崎, 泰永  ,  梅田, 大樹  ,  鈴木, 真実

(1)  , pp.73 - 78 , 2017-03-24 , 国立研究開発法人 農業・食品産業技術総合研究機構 , National Agriculture and Food Research Organization (NARO)
The use of environmental control systems in greenhouse horticulture is essential to increase dry matter production and fruit yield.This study assessed the effect of different combinations of CO2 concentration given over varying application periods,and temperature and relative humidity(RH)control on the dry matter production and distribution to the fruits of tomatoes grown in a greenhouse during winter(December-April).Compared with the control(no CO2 supplementation)and the conventional environmental control method(2000 ppm CO2 supplementation from 06:00 to 12:00),the longer period of CO2 application at lower concentration(800 ppm) combined with RH control led to an increase in the total dry matter production of 3-month-old tomato plants.The results indicated that CO2 supplementation is more effective for increasing dry matter distribution to the fruits at higher greenhouse temperatures.They also indicated that ventilation early in the morning to prevent dew formation on leaves and fruits does not decrease dry matter production.

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