Self-recording instrument for evaporation capacity of sandy land

The invention relates to a self-recording instrument for the evaporation capacity of a sandy land, which can be used for fixedly monitoring the ground evaporation capacity in a natural environment and automatically recording ecological environment factors in real time. The self-recording instrument comprises an evaporation pan system, a capillary connecting device, a water level controlling and water supplying device, a soil moisture monitoring and electronic program controlling system, a data recording, storing and displaying system, a seepage discharging and receiving system and a housing, wherein the evaporation pan system and the water level controlling and water supplying device are connected with the capillary connecting device; the soil moisture monitoring and electronic program controlling system comprises a moisture monitoring electronic program controller, a pressure sensor, two thermistors and two temperature sensors, wherein the electronic program controller is connected with the pressure sensor,