The treatment of straw and residues referred to here mainly refers to field treatment. 1) Applicable implements: (1) Straw returning machine This machine can crush and evenly disperse the standing or cut straw in the field. (2) Stubble machine The stubble machine can chop or break the corn root and its surrounding soil to evenly disperse on the surface. The current extermination device mainly adopts the form of a rotary cutter, which is produced by the Lishu County Agricultural Machinery Plant of Jilin Province. The vertical rotary cutter type stubble culling machine is suitable for the smashing of most of the corn residue in China. 2) Operation technology: (1) The operation technology of straw returning station shall firstly select the power and power output shaft speed matching with the reverting machine to ensure the quality and efficiency of the operation; secondly, the working part shall not be able to hit the soil during operation. Otherwise it will affect the crushing effect; the third is to control the forward speed and engine speed. Can make the best quality and effectiveness of the job. (2) The operating technology of the smasher. When the hoeing operation is carried out, the depth of the cutter head shall be cut to the main part of the crop root (above the pentagonal strand). The excessive power consumption is too deep and the economic benefit is not good; the depth is too shallow and the residue is not completely treated, which affects the cultivation. In addition, a repression should be carried out after the extermination to facilitate conservation. Working hours are generally performed before freezing in the autumn.