Precision variable rate fertilizer

The present invention belongs to agricultural machinery, it is by tractors and suspended fertilizer spreader provides fertilizer consumption Information Locator at the position of the mechanical control system with GPS positioning system by the tractor stationary on-board computer, to adjust fertilization by adjusting row fertilizer wheel speed purpose content. Drain fat wheel is controlled by a hydraulic motor speed, start and stop of fertilizer can switch forces controlled by controlling fertilization. According to a predetermined prescription throughout the land were variable fertilization can improve fertilizer use efficiency 40-50%, grain output increased by 30%, reduce pollution due to the unreasonable application of fertilizer to the environment.