Seed coating agent with acid-resisting and growth-promoting effects and application thereof

The invention relates to the field of agricultural rape varieties and cultivation production, in particular to a seed coating agent with acid-resistant and growth-promoting effects and application of the seed coating agent. The functional component obtained by compounding proper components in a proper proportion can regulate the pH value of soil in a seed area, reduce and passivate toxic ions (such as trivalent active aluminum ions), reduce the concentration of toxic active aluminum ions and manganese ions which obstruct rape seed germination and radicle growth, and improve the yield of rape seeds. Effective nutrients necessary for growth of the rape are released in soil or directly provided, root growth and development are stimulated, and seedling emergence and growth and development of the rape are facilitated. Therefore, the functional components are used for pelleting rape seeds, the purposes of resisting acid and aluminum and promoting seed germination and growth can be achieved, and the effects of full