Practical Research on Soil Nutrient Detection Technology Based on Visual Colorimetry

Objective: Research on rapid detection equipment for nutrients in soil to achieve on-site multi-indicator rapid detection of soil.Method: Design the hardware of the equipment, including the design of extraction reagents, colorants, and colorimetric strips; And verify the reliability of soil rapid detection equipment.Result: By analyzing the detection principles of nutrients in soil, a rapid detection equipment for soil nutrients has been developed.The precision and stability validation was conducted using this equipment and the methods specified in national standards under the same concentration conditions.The results showed that there was no significant difference between the two methods for organic matter, ammonium nitrogen, available phosphorus, and available potassium in soil.The rapid detection equipment for soil nutrients is reliable.Conclusion: The rapid soil detection equipment has high detection accuracy and stability, which can meet the requirements of on-site rapid soil detection.