Intelligent greenhouse control is mainly based on the temperature, humidity, carbon dioxide content, illumination, wind speed, wind direction, rainfall and other climatic factors of the external environment, to control the temperature, humidity, ventilation, illumination in the intelligent greenhouse, to create the best environment for crop growth, but also to the various nutrients affecting crop growth. Elements are managed dynamically. In this kind of control, there is a strong correlation among the controlled quantities such as temperature, humidity, carbon dioxide content, light, etc. The change of one controlled quantity will affect the change of other controlled quantities.
On the basis of absorbing high-tech greenhouse production technology from developed countries, Chinese agricultural engineers and technicians have studied the control technology of single environmental factors such as temperature, humidity, carbon dioxide and nutrient solution in factory greenhouse, and developed their own intelligent greenhouse control system.