Novel fertilizer for improving quality of tobacco leaves in Yuxi tobacco area and application method of novel fertilizer

The invention relates to a novel fertilizer for improving the quality of tobacco leaves in Yuxi tobacco areas and an application method of the novel fertilizer, and belongs to the field of flue-cured tobacco planting.The organic-inorganic fertilizer is composed of a solid fertilizer, a water-soluble fertilizer and an organic potash fertilizer, the mass percentage ratio of nitrogen, phosphorus and potassium nutrients in the solid fertilizer is 7: 6: 17 or 7: 10: 13, and the mass percentage ratio of water-soluble fertilizer to organic potash fertilizer is 1: 1. Chlorine-free amino acid accounting for 3% of the total mass of the solid fertilizer and proline accounting for 0.2% of the total mass of the solid fertilizer are added into the solid fertilizer, the mass percentage ratio of nitrogen, phosphorus and potassium nutrients in the water-soluble fertilizer is 10: 0: 30, alanine accounting for 0.5% of the total mass of the water-soluble fertilizer is added into the water-soluble fertilizer, and the mass percent