The machine is completely mounted with tractor, during operation, the discs by its rotating to turn the soil, particularly, it is suitable for operation on the field with grasses, straw and stems of crops or plants, big soil resistance and with many stones and brickbat, etc. in the field. It is good at cutting the grasses and straw，free from being stopped by the grasses, soil or stones, etc. According to the structure can be divided into different forms of 1LY (T) series; 1LY series; 1LYX series; 1LY (SX) series.