The invention discloses a farmland environment monitoring device, which comprises a
soil water content sensor (1) and a
soil conductivity sensor (2) combined on the
tail end of a support rod (4), and an insulating ring (3) for isolating the
soil water content sensor (1) from the
soil conductivity sensor (2), wherein the support rod (4) has a hollow structure; the
soil water content sensor (1) and the
soil conductivity sensor (2) are connected with a sensor
signal conditioning unit (7) through a
coaxial line (5) in the support rod (4); a
solar power supply (10) is used for supplying power to the device and transmitting
voltage information to an information collection unit (8); and the information collection unit (8) is used for collecting signals outputted by the sensor
signal conditioning unit (7), acquiring the
solar intensity information according to the
voltage information transmitted by the
solar power supply (10) and transmitting data with a
wireless transceiving module (9). By adopting the
solar power supply for supplying power to the device, the invention can ensure the continuous normal operation of the device, and the
wireless transceiving module can achieve long-distance
data transmission.