Planting device for realizing constant temperature of rice root zone environment

The utility model provides a planting device for realizing constant temperature of a rice root zone environment. The planting device capable of achieving the constant temperature of the rice root zone environment comprises a heat preservation water tank, a heat preservation sleeve is fixedly connected to the top of the heat preservation water tank, a planting device body is arranged in the heat preservation sleeve, and a heat exchange coil pipe is arranged at the bottom of the inner wall of the heat preservation sleeve; the two ends of the heat exchange coil pipe sequentially penetrate through the heat preservation sleeve and the heat preservation water tank and extend into the heat preservation water tank, a water pump is arranged at the top of the inner wall of the heat preservation water tank, the water inlet end of the water pump is connected with a connecting pipe, the water outlet end of the water pump is communicated with one end of the heat exchange coil pipe, and a sleeve is arranged at the bottom of