Ditching and soil covering device of fertilizer applicator capable of synchronously transplanting and fertilizing rice seedlings

The invention discloses a ditching and earthing device of a fertilizer applicator for synchronous rice transplanting and fertilizing, which belongs to the technical field of rice fertilizing, and comprises a furrow opener, an earthing device and a fertilizing pipe seat, the furrow opener is arranged on a floating plate of a rice transplanter, the earthing device is arranged at the rear end of the floating plate of the rice transplanter far away from the furrow opener, and the fertilizing pipe seat is positioned between the furrow opener and the earthing device. The ditching and earthing device further comprises a cutting blade, the cutting blade is installed on a driven shaft, the driven shaft is installed at the head of a furrow opener, and the head of the furrow opener is higher than a floating plate of the rice transplanter. One end, far away from the cutting blade, of the driven shaft is sleeved with a driven belt wheel, the driven belt wheel is connected with a driving belt wheel through a flexible belt,