Main advantages of the "three-ridge" soybean cultivation technique:

First, deep soil loosening breaks through the plow pan, deepens the tillage layer, and improves soil structure, which benefits soybean root development and nodule formation; deep loosening creates a soil structure with both loose and firm zones, improving soil permeability.

Second, layered fertilization within the ridge body improves fertilizer use efficiency and delays the fertilizer supply period, preventing nutrient deficiency late in the growing season. The small precision seeders currently used in production can all achieve deep placement of chemical fertilizer; they can also apply seed fertilizer and base fertilizer at the same time.

Third, double-row precision hill sowing on the ridge reduces seed usage and overcomes gaps and missing plants in the rows, resulting in a reasonable population distribution.