Nutrient synergistic anti-caking compound fertilizer and preparation method thereof

The invention relates to nutrient synergistic anti-caking compound fertilizer. The nutrient synergistic anti-caking compound fertilizer comprises compound fertilizer and DA-6 crude oil, wherein the weight content of the DA-6 crude oil is 0.01-0.1% of the weight of the compound fertilizer. The fertilizer can effectively prevent and solve the caking problem of the compound fertilizer, is nutritious and efficient, and can increase the yield of crops by above 8-15% when being used for bottom application or topdressing.