It has good pulverizing performance on corn, sorghum, cotton straw and soft straw of rice and wheat which are erected or laid in the field. It is an ideal machine for straw smashing directly to return to the field.crop smashing and returning to the field can not only increase the soil organic matter, improve the soil structure, improve the soil fertility, but also solve the contradiction between the struggle for labor during the agricultural busy period. It also avoids environmental pollution caused by burning straw.