Underground root irrigation device for controlling asparagus pests

The underground root irrigation device comprises a bottom plate, a liquid storage tank and an output mechanism are arranged at the top of the bottom plate, fixing mechanisms are arranged on the periphery of the liquid storage tank, a liquid level column and volume scales are arranged on the surface of the liquid storage tank, the output mechanism comprises a water suction pump and an output device, and the output device is arranged on the bottom plate. A four-in-one soil detector is arranged on the front side of the output mechanism, a moving mechanism is arranged at the bottom of the bottom plate, a supporting column and a first pressing plate are arranged on the right side of the moving mechanism, and a connecting column and a handle are arranged on the left side of the bottom plate. The device is provided with the output mechanism, so that the position for outputting the insecticide can be dispersed, the influence on the root of the asparagus and greater economic loss are avoided, the output device is rela