Abstract: With focus on current situation and development goal of facility agriculture in Zhejiang Province, Wireless sensor network (WSN) was introduced as a new technology to monitor environment and crops in greenhouses. To meet the application requirement in greenhouses, UNIT WSN was then described based on its communication protocol and technique features. For perspective of precision agriculture, a provincial monitoring system was put forward to serving the production of greenhouses in Zhejiang．

Key words: wireless sensor network, UNIT protocol, facility agriculture, environmental monitoring