Hopper for fertilizer applicator

The hopper comprises a hopper body, a square bin internally provided with electronic devices, a mounting plate and a fertilizer discharge guide groove, the hopper body is arranged on the square bin, a discharge port of the hopper body is located on the top face of the square bin, the hopper body and the square bin are integrally formed, an opening is formed in the bottom of the square bin, and the opening of the square bin is connected to the mounting plate in a sealed and buckled mode through a connecting piece in the circumferential direction. The mounting plate positioned outside the square bin is mounted on the fertilizer applicator rack, the mounting plate is provided with an opening facing the discharge port, a fertilizer discharge guide groove is formed below the mounting plate, and the opening in the mounting plate is positioned in the fertilizer discharge guide groove; the hopper can prevent electronic devices in the square bin from being wetted by rainwater, and the electronic devices can be prevent