Method for assessing nitrogen leaching risk based on farmland soil pressure

A computer-implemented method for assessing nitrogen leaching risk based on farmland soil pressure, comprising the following steps:

• instructing a soil drilling device to acquire soil drilling pressure data from a plurality of soil layers of different depths on soil to be tested, to obtain raw soil drilling pressure data, and monitoring real-time parameters of the soil drilling device;
• selecting a calibration curve based on basic information about the soil to be tested, plotting a raw soil drilling pressure curve based on the raw soil drilling pressure data, and comparing the calibration curve with the raw soil drilling pressure curve to determine a first fluctuation factor according to a similarity between the calibration curve and the raw soil drilling pressure curve;
• determining a performance fluctuation of the soil drilling device according to the real-time parameters of the soil drilling device, determining a second fluctuation factor according to the performance fluctuation of the soil drilling device, setting an interquartile range (IQR) coefficient based on the first fluctuation factor and the second fluctuation factor, and constructing a box plot of the raw soil drilling pressure data based on the IQR coefficient;
• determining a peak soil drilling pressure according to the box plot of the raw soil drilling pressure data, and determining nitrogen leaching risk according to a depth interval of soil layer where the peak soil drilling pressure is located;
• determining a nitrogen prevention and control plan, and a farmland improvement scheme based on the nitrogen leaching risk;
• and
• performing the nitrogen prevention and control plan and the farmland improvement scheme on the soil.