Abstract:

To study the interaction of environmental factors inside/outside Venlo-type glass greenhouse planted with cucumber, it is considered Venlo-type glass greenhouse planted with cucumber as the object. The greenhouse control system automatically was used to record and store the data of indoor and outdoor temperature, humidity and light. Through analyzing the records of environmental data, the results showed that the maximum temperature rate between indoor and outdoor was 18.97% and the relative humidity was 39.6% on sunny days while they reach 15.68% and 35.9%, respectively, on cloudy days. However, on the sunny and cloudy days, light between indoor and outdoor didn’t show significant differences. It was mainly attributive to the cover material which decided the transmittance of light. The results could provide optimal control theory and decision support for planting cucumber in Venlo-type glass greenhouse environment.