Abstract: In order to reduce the energy consumption and labor costs in the process of crop production in greenhouse， and to increase the agricultural recycling effect， an efficient recycling greenhouse design system was proposed. In order to reduce the use of high energy consumption equipment， the solar heating materials were used for thermal storage to increase temperature in the greenhouse， and the special ventilation window design was applied to increase the air convection area and reduce temperature in the greenhouse. The agricultural recycling was achieved by combining light with shade solar greenhouse， which could be controlled by computers and mobile phones via multisource perception and dynamic weighting fusion algorithm to improve control and fusion accuracy. This agricultural expert system control strategy was integrated with 3 models， i.e. crops growth model， greenhouse control model and energy consumption model， and the multiple factors and energy saving optimization control method was put forward according to crop photosynthesis rate in greenhouse. In view of the difference between the economic benefit and the cost of energy consumption， the optimal control strategy was obtained， which could increase yield and reduce the cost of greenhouse control. Up to now， the whole set of monitoring system has been tested in Xuzhou modern agricultural experiment demonstration base.

Key words: greenhouse, photosynthesis rate, cost, agricultural cycling, agricultural expert system