How to analyze soil fertility1First remove about 5 cm of topsoil; then mash the soil down to a depth of 13 cm. And clean out all organic impurities from the soil that could affect test results, such as leaves, roots, etcSoak the soil with water until it becomes muddy. (It is best to use rainwater or distilled water). 3Use cleaning cotton or paper towel to wipe the probe clean.4Turn the function key to the first slot on the left. 5Insert the probe into the soil being tested until the distance between the soil and the body does not exceed 2.5 cm. Wait for up to 10 seconds, and once the pointer stabilizes, you can read the dataRecord Data: Remove the probe from the soil and thoroughly clean it. The criteria for judging analysis results are as follows: Too Little (TOO LITTLE) Nitrogen less than 50 ppm, Phosphorus less than 4 ppm, Potassium less than 50 ppm; Ideal Range (IDEAL) 50-200 ppm, 4-14 ppm, 50-200 ppm; Too Much (TOO MUCH) greater than 200 ppm, greater than 14 ppm, greater than 200 ppm. Single Unit ppm: parts per million. If the analysis shows 'TOO LITTLE', meaning deficiency, please use liquid fertilizer for different plants you grow to supplement nutrients for crops(Refer to the instructions on the fertilizer packaging bag) If the analysis shows "IDEAL," meaning ideal, use fertilizer according to the different plants you are growing, applying once a month in conjunction with irrigation. If the analysis shows "TOO MUCH," meaning excessive, use less fertilizerWater abundantly to dilute and wash away excess nutrients; 2For potted plants, they should be replanted in new soil;3Do not apply any more chemical fertilizers, but you can add manure, compost, plant residues, leaves, and other organic materials to the soil. How to analyze soil pH value 1First remove about 5 cm of topsoil from the soil to be tested; then crush the soil downward to a depth of 13 cm. Also clean out any organic impurities that could affect the test results, such as leaves and rootsSoak the soil with water until it becomes muddy. (It is best to use rainwater or distilled water) 3Turn the function key to the rightmost slot. 4Moist probe. Use a clean cotton pad to wipe clean the rightmost probe among the three probesInsert the probe completely into the soil being tested.6Wait for 1 minute to read the data.7After the test is completed, wipe the probe clean and dry it