於設施下以直立式栽培‘東英’西洋南瓜(Cucurbita maxima L.)，定植於盛有50 L介質之容器中，於底部灌溉0 L(對照組)、4 L或8 L(皆為節水處理)水量，並在營養生長期分別以田間容水量80%、60%與60%為灌溉標準，進行噴霧處理以及不噴霧處理，探討最佳灌溉模式。噴霧處理顯著降低植體葉片溫度，並降低葉片內CO₂濃度。於底部灌溉8L水量且無噴灌者之植株株高、葉面積、光合速率、蒸散速率與果肉重皆較無底部灌溉亦無噴灌者顯著增加。在噴霧下於底部灌溉4 L水量之水分利用效率最佳。於設施內使用噴霧，不僅降低葉溫，更能防止葉片處於過度蒸散狀態，使植株整體水分利用效率增加。

In this experiment, ‘East Elite’ Winter Squash (Cucurbita maxima L.) were vertically cultured in a 50 L container and based on the irrigation standard of 60% field water capacity in greenhouse. During vegetative growth stage, different bottom irrigation water amount (8, 4, 0 L) and fogging system were used to find the best water-saving management. Fogging treatment significantly reduced the temperature of leaves and stomata remained open while the net photosynthesis rate increased under fogging condition. The 8 L bottom irrigation treatment significantly increased the leaf area, plant height, net photosynthesis rate, stomatal conductance and fruit quality. The 4 L bottom irrigation treatment with fogging had the best water use efficiency (WUE). Fogging system reduced the temperature of plants cultured in greenhouse and prevented plants from over-evaportranspiration. The WUE value was increased with fogging and bottom irrigation.