Modified glutamic acid fertilizer synergist and production method and application thereof

The invention relates to a modified glutamic acid fertilizer synergist and a production method and an application thereof. The fertilizer synergist is a modified glutamic acid fertilizer synergist obtained by extracting glutamic acid with small molecular amount from weathered coal and humate serving as raw materials with diluted alkali or diluted acid and hydrogen peroxide and adding chelated state trace elements. Due to the adoption of the modified glutamic acid fertilizer synergist, the soil urease activity can be suppressed remarkably, the ammonia volatilization loss is reduced, and slow release of a fertilizer is enhanced; root growth of crops can be facilitated, root activity is increased, and the capabilities of crops of absorbing phosphorus, potassium and medium and trace elements are increased; and nutrient loss can be reduced, secondary pollution is avoided, and the production cost of a synergic fertilizer is reduced.