Far infrared and hot air check experiments indicated that the drying time can shorten about 30% compared with that of far infrared drying when the temperature of the cabinet dryer was 4 ℃ higher than that of far infrared. 远红外和热风对比试验显示,当干燥箱内温度高于远红外脱水装置的温度4℃时,甘蓝的远红外干燥时间相比热风干燥时间可缩短30%左右。