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Part of the plough type plow and the type of the northern plow surface series
The purpose of the arable land is to turn over and loosen the soil, bury the earth's remains, straw, weeds, fertilizers and pathogens, eggs, etc. into the soil, and turn the subsoil up to break it up and ripen, so as to promote the decomposition of soil organic matter. Improve soil fertility and water storage capacity, improve soil structure, eliminate pests and diseases, and improve conditions for water, fertilizer, gas, and heat in the soil. Due to different soil conditions and cultivation requirements, the squat plough structures used in various regions may not be exactly the same, but the basic components are the same. The squat plough is composed of a plough body, a plough frame, a suspension frame (or a traction component), a plow wheel, and the like. The plough body is the main working part. The working surface of the plough body cuts the soil in the vertical and horizontal directions and performs the action of tumbling and smashing the soil. In order to ensure the quality of cultivated land, round coulters, small front ploughs and small coulters can be installed in front of the main plough body according to the requirements of cultivation and soil conditions. The series of plows on the northern dryland plows can be classified into ripe ground type, semi-spiral type and spiral type according to their work performance. Rehabilitation type is the most common kind of application. Its plow chest is relatively steep, its wings are less distorted, and it has good soil properties and poor ability to turn over. It is suitable for cultivation. The helical plow body has a flat chest surface, a long plowing wing and a large degree of twisting, and has a strong soil-turning ability, but the effect of the pulverized soil is poor, and it is suitable for opening wasteland and viscous, grassy and damp soil. Semi-spiral is somewhere in between.