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During the land preparation phase, base fertilizer is applied using a bottom plowing fertilizer machine. Key technical points include: the fertilization depth should be between 10 to 25 cm, the fertilizer band width should range from 3 to 5 cm, the application must be uniform and continuous without visible breaks, and the amount of fertilizer must meet the agronomic requirements for crop growth.
For deep fertilizer application, fine casting spreaders and ditch casting machines are typically used during sowing. This method not only applies the fertilizer but also covers and presses the soil at the same time. There are two main types of deep application: lateral and direct. In lateral application, chemical fertilizer is placed beside the seed, while in direct deep application, it is placed directly beneath the seed. Important technical considerations include ensuring the correct amount of seed and fertilizer according to agronomic guidelines. A soil layer of at least 3 cm thickness should separate the fertilizer from the seed to prevent damage or burning of the seedlings. The fertilizer band should be slightly wider than the seeding area, evenly distributed, and free from gaps or leaks. The soil depth should be consistent, and the field should be well broken up with a flat surface.
For topdressing application during the crop growth stages, fertilizer-seeding machines, medium-fertilizer equipment, and other tools are commonly used. Key technical points include: the fertilizer amount must meet the nutrient needs of the crops in each growing season; the fertilization depth should be 6 to 8 cm; the fertilizer should be placed below the root zone, avoiding direct contact with the roots if possible; the fertilizer band width should be 3 to 5 cm, and the application must be even and continuous without breaks.
This approach ensures efficient nutrient delivery, supports healthy crop development, and minimizes the risk of fertilizer burn or uneven distribution. It’s essential to follow these guidelines to achieve optimal results in both yield and quality.