Fertilizer broadcaster with hopper.

摘要

The centrifugal fertiliser spreader with two hoppers (8) for different types of fertiliser, supported behind a tractor uses two dispensing systems (10) each with a discharge opening (23). The size of the opening is adjusted by a sliding plate (22) swung across it, operates by an electronic control device (11) under the hopper . This device controls a stepping motor which regulates the -position of the plate according to the quantity to be discharged.