Tower type thioureido full-water soluble top dressing fertilizer special for fruit trees and preparation method thereof

The invention discloses a tower type thioureido full-water soluble top dressing fertilizer special for fruit trees and a preparation method thereof, belongs to the technical field of agricultural fertilizers, in order to solve the problems of incomplete nutrition and imbalance of applied fertilizers, and low utilization rate of fertilizers in the prior art. The tower type thioureido full-water soluble top dressing fertilizer special for fruit trees comprises the following components in parts by weight: 250-450 parts of urea, 30-150 parts of monoammonium phosphate, 10-100 parts of ammonium polyphosphate, 450-650 parts of potassium sulfate, 2-10 parts of a boron element component, 0.5-5 parts of a zinc element component, 0.5-5 parts of a magnesium element component, 2-10 parts of an alga extract product, and 0.2-1 part of a fruit enlargement auxiliary agent. The formula is prepared according to practical demands for nutrition in flowering stage and fruit enlargement stage of fruit trees, components are mutually