In order to cut up straw to mulching potato seeds in winter fallow rice fields,a removable hay cutter is developmented.This machine mainly consists of diesel engine,transmission system,drive system,control system and chaffcutter etc.The results showed that the machine can chop into pieces 26mm straw,throw and mulching potato in the ridge.The structure of machine is novel,conveniently to drive and control.If the cutter clearance is adjusted,this mac...