Humic acid synergistic composite fertilizer and preparation method thereof

The present invention discloses a method of preparation and humic acid fertilizer efficiency, high quality of the humic acid fertilizer efficiency of nitrogen, phosphorus, potassium raw materials, and with an appropriate amount of high activity humic acid and trace elements, in particular the use of advanced the oxidation of humic acid extracted from weathered coal and peat, humic acid producing high utilization of raw materials, and using advanced refining granulation process, humic acid is a high conversion rate, full nutrient, can achieve high-yielding crops quality, but also improve soil structure of humic acid compound fertilizer efficiency. Was tested on cell soybean, corn and other crops, increase yield.