What are the technical key points of tractor subsoiling operations?

Reasonable selection of subsoiling depth is crucial. The subsoiling depth should be comprehensively determined based on factors such as soil type, crop requirements, and geographical location. Generally speaking, a subsoiling depth of 20–40 cm is appropriate, as this can both ensure normal crop root growth and fully break up the soil structure, improving soil aeration and water retention. Choosing suitable subsoiling tools is also very necessary. There is a wide variety of subsoiling tools on the market, including knife coulters, large coulters, fermentation turners, and others. Selecting appropriate tools according to soil type and operational requirements helps improve subsoiling results. For special soil textures, attachments such as hammerheads or sawtooth edges can be added to strengthen the crushing effect and improve operational efficiency. Grasping a reasonable operation time is key to ensuring subsoiling results. Autumn—after the crop growing season has ended—is the best time to carry out subsoiling operations. At this time, the crops have already been harvested, and the soil moisture content is relatively high, which is favorable for subsoiling operations. In addition, during operation, try to avoid soil that is too wet or too dry, so as not to affect the operation results. Soil management after subsoiling is equally important. Soil after subsoiling tends to clod, so appropriate soil conditioning and improvement are needed, such as applying organic fertilizer, plowing, or covering with straw. These measures help maintain soil fertility and moisture and create a good environment for the growth of the next season's crops.