This product is four ridges haulm chop machine. It can complete the chop and combing of potato haulm at one time. Through the mechanical chop of potato haulm is the potato tuber skin full aging, and the stem haulm separation is easier, the aging of potato skin is conducive to the mechanization of potato harvest, the machine is convenient to operate, good reliability, high efficiency, to ensure the quality of commercial potato, after crushing the potatohaulms returned to the field, can improve soil fertility. The potato haulm chop machine is suitable for cutting and chopping potato haulm before harvest with ridge spacing of 90 cm, ridge height between 15 and 30 cm, and ridge girth no more than 110 cm. The soil moisture content is required to be no more than 25%, and the recommended speed of operation is 4 to 7 kilometers per hour. The machine has been widely used in China and other areas.