Experimental research of influence factor on seed damage rate and loss rate in harvesting corn

Four factors affecting seed damage rate and loss rate are analyzed by orthogonal test on picker.The results showed that the first effect on seed damage is seed containing water rate,the second is ejector roller speed and shape of picking board,and the last is the move speed of picker;the first effect on seed loss is ejector roller speed,the second is shape of picking board.When work on low seed containing water rate(30%),curving picking board,moderate ejector roller speed(600~700 rpm),the quality of harvester is the best.