Abstract:Greenhouses have extremely high humidity that often presents an important factor affecting the yield and quality of crops, particularly the southern regions of China, where air humidity is high. The conventional methods, such as slots, skylight/lateral windows, and exhaust fans, as presently applied to dehumidify in greenhouses, have a disadvantage to lose heat, which decreases air temperature. In order to solve this problem, plastic mulch coverage and dripping irrigation were designed as dehumidify methods...