It is of great importance to guide fertilization and irrigation of agriculture by obtaining crop stalks and fruit diameter

chlorophyll content

plant stem flow and other physiological information. Aiming at problems of insufficient method of real time detection on plant physiological parameters in traditional agriculture

a new type of crop of physiological parameters detection system based on wireless sensor networks（ WSNs） is designed. Data acquisition terminal of the system use the IAR platform to build Zig Bee WSNs

by using wireless sensor nodes based on CC2530 chip to collect and send plant physiological parameters. Remote transmission terminal adopts CDMA DTU module based on ARM9 sending data by CDMA2000 and Internet network to remote testing center

remote testing center can not only display real-time data and query historical data but also can analyze data index to judge by using upper PC software based on Lab VIEW and SQL Service. Experimental results show that precision of the system is higher

and data transmission is stable

which meets requirements of design.