Compound fertilizer for improving later commodity rate and quality of cucumbers and preparation method of compound fertilizer

The invention provides a compound fertilizer for improving later commodity rate and quality of cucumbers and a preparation method of the compound fertilizer. The compound fertilizer comprises the following components in parts by weight: 450-500 parts of a nitrogen fertilizer, 110-120 parts of a phosphate fertilizer, 450-500 parts of a potassium fertilizer, 60-70 parts of a calcium element, 5-10 parts of a magnesium element, 20-30 parts of a boron element, 5-10 parts of a zinc element, 1-5 parts of an iron element, 1-3 parts of alginate oligosaccharide and 0.1-0.5 part of a synergistic additive. The fertilizer disclosed by the invention can be used for maintaining root systems and providing balanced nutrition, and the growth vigor of plants is improved and the occurrence of malformed melons is reduced by applying calcium, magnesium, phosphorus and potassium fertilizers and supplementing microelement fertilizers. 本发明提供了一种用于提高黄瓜后期商品率和品质的复合肥及其制备方法。该复合肥包括如下重量份的组分：氮肥450-500份、磷肥110-120份、钾肥450-500份、钙元素60-70份、镁元素5-10份