Maize mechanized precision seeding One-time deep fertilization technology is an advanced corn planting technique, which uses a 2BQF-2 precision seeder to carry out single-grain corn seeding into the soil according to the position required by agronomy, and The mechanized planting technique of chemical fertilizer is applied in one shot at a time. One-time fertilization means that the fertilizer is applied into the soil at a time according to the agronomic requirements to reach the nutrients of the crop at different stages, satisfying the nutrient requirements of the corn growth and development stage, and the long-acting fertilizer once and for all breaks the traditional farming procedure, and at the same time combines The chemical herbicide is closed, which reduces the number of artificial seedlings and manual weeding, saves too much labor input, improves the utilization rate of fertilizer, and achieves the goal of increasing grain production and increasing farmers' income.