Soil Nutrients Content and Soil C/N Value of Four Different Soil Types in Bijie

Soil nutrients content and soil C/N value of lime soil, skeleton soil, purple soil and yellow soil were studied based on the survey data of Bijie fertility evaluation of cultivated land. The results showed that soil organic matter, total nitrogen, total potassium, available nitrogen, available phosphorus, available potassium and C/N average value were 30.69g/kg, 1.59g/kg, 301.92mg/kg, 175.95mg/kg, 19.29mg/kg, 169.79mg/kg and 19.20, respectively. The contents of soil organic matter, total nitrogen and available nitrogen of yellow soil were the highest and its soil C/N value was the largest as well; the contents of soil total potassium and available potassium of lime soil were the highest; however, purple soil had the lowest contents of soil organic matter, total nitrogen, total potassium, available nitrogen, available phosphorus and available potassium, and its soil C/N value was the smallest.