Agricultural Soil Fertility Evaluation in Mulei County Based on Fuzzy Method
Scientific evaluation of agricultural soil fertility can provide a scientific basis for the adjustment of planting structure and scientific fertilization of crops.Based on the pH and nutrient status of the cultivated soil in Mulei County,using pH,organic matter,alkali-hydrolyzable nitrogen,available phosphorus,and available potassium as soil fertility indicators,the fertility comprehensive index(IFI)value obtained based on the Fuzzy method was used to evaluate the agricultural soil quality of Mulei County.The results showed that the soil in Mulei County contained organic matter 14.85 g/kg,alkali-hydrolyzable nitrogen 72.10 mg/kg,available phosphorus 14.94 mg/kg,available potassium 275.07 mg/kg,with a pH of 8.08,indicating an alkaline nature of the soil.Organic matter and alkali-hydrolyzable nitrogen were deficient,available phosphorus was at a medium level,and available potassium was abundant.The average value of the soil IFI was 0.541.The agricultural soil fertility in Mulei County showed that Yinggebao Township and Queren Township were rated as level 2,with higher fertility and good quality,while other townships were rated as level 3.In summary,the agricultural soil in Mulei County is generally alkaline,with organic matter,alkali-hydrolyzable nitrogen,and available phosphorus as limiting factors for soil fertility,and pH and available potassium as the main influencing factors.It is recommended to appropriately supplement nitrogen and phosphorus and increase the application of organic fertilizers.
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