Experiment on Indicators of Soil Nutrient Abundance and Deficiency of Spring Maize： A Case Study of Yulin City，Shaanxi Province

Cost of fertilizer accounts for more than 50% of total expenditure of spring maize.A set of reasonable fertilization scheme was put forward for scientific and rational fertilization.By analyzing results of field soil agrochemical samples of field fertilizer effect test of spring maize‘3414’in Yulin city，it was concluded that the soil nutrients of cultivated land were divided into four grades，which were high，medium，low and very low，and the indicators of soil nutrient abundance and deficiency of spring maize in Yulin city were worked out.