Humic acid controlled release blended fertilizer dedicated for corn

The invention provides a humic acid controlled release blended fertilizer dedicated for corn. The fertilizer is composed of the following components in parts by weight: 288 to 322 parts of common urea, 165 to 179 parts of film-coated controlled release urea, 228 to 273 parts of monoammonium phosphate, 167 to 200 parts of potassium chloride, and 52 to 119 parts of nitro humic acid. The provided fertilizer has a high utilization rate, is very practical, and thus has a wide market prospect.