Abstract: Aiming at problems such as low fertilizer application accuracy and poor inter-row compatibility in fertilization operations under intercropping mode, a mechatronics electro-controlled fertilization application device was proposed．An electrically driven independent fertilizer application scheme was adopted to replace traditional ground wheel transmission．A closed-loop control system integrated with a fuzzy PID algorithm and encoder feedback was constructed to achieve differentiated fertilizer application regulation for corn and soybeans．Testing results showed that all fertilizer application coefficients of variation values met technical specifications for fertilization application device quality evaluation, providing an effective mechanized solution for corn-soybean strip intercropping．