Nitrogen fertilizers should be applied by digging a small ditch or hole, with a depth ranging from 3 to 8 centimeters. After applying the fertilizer, it's important to cover the soil immediately to prevent nitrogen loss through evaporation. For phosphate fertilizers, it's best to apply them in a single spot, hole, or around the root zone, so that the fertilizer comes into direct contact with the roots and minimizes contact with the soil. This helps reduce phosphorus fixation and improves its availability to plants. Potassium fertilizer should be applied later in the process—either deep in the soil or early on—but avoid watering right after application to prevent leaching. Compound fertilizers are most effective when applied in a deep furrow and then covered with soil. Wait about 5 to 7 days before watering to allow the fertilizer to dissolve and be absorbed by the plant roots. By following these methods, you can significantly improve the efficiency of fertilizer use, increasing the utilization rate by approximately 5 percentage points. These techniques not only save resources but also help protect the environment by reducing nutrient runoff and waste.
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