Special water-soluble fertilizer for drip irrigation of corns

The invention relates to a fertilizer, particularly to a special water-soluble fertilizer for drip irrigation of corns. The special water-soluble fertilizer contains three macroelements and one microelement, wherein the macroelements comprise larger than or equal to 31% of N, larger than or equal to 5% of P2O5 and larger than or equal to 15% of K2O; and the microelement comprises larger than or equal to 0.20% of Zn. According to the special water-soluble fertilizer, a reasonable formula is determined according to corn target yields and soil fertility conditions; an application mode of taking basal application of a phosphate fertilizer as the main form while taking drip application as the auxiliary form, and taking drip application of nitrogen and potash fertilizers as the main form while taking basal application as the auxiliary form is realized; the problems of poor water solubility and effectiveness of the phosphate fertilizer are solved; meanwhile, the application cost is reduced; according to needed water and fertilizer quantities at different growth stages of corns, water and nutrition are delivered to soil at plant roots regularly, quantitatively, evenly and accurately in accordance with the principle of small amounts for multiple times, so that the absorption of root systems to the water and nutrition is promoted. The special water-soluble fertilizer has the advantages of being water-saving, fertilizer-saving, labor-saving, efficient and environment-friendly and is obvious in production and income increasing effect compared with traditional fertilizers.