Special fertilizer for foliage spray of artemisia selengensis Turcz. and preparation method of special fertilizer

The invention discloses a special fertilizer for foliage spray of artemisia selengensis Turcz. and a preparation method of the special fertilizer. The special fertilizer is prepared from urea, dipotassium hydrogen phosphate, potassium nitrate, EDTA-zinc, boric acid and citric acid in a certain ratio. The preparation method comprises the following steps: A. weighing the raw materials in a certain ratio according to weight percent; and B. uniformly mixing and stirring the raw materials in the step A to obtain the special fertilizer for the foliage spray of artemisia selengensis Turcz. The special fertilizer has a scientific and reasonable formula and is convenient to use; the special fertilizer is prepared from high-quality chemical raw materials; the ratios of macro-elements, medium elements and microelements contained in the special fertilizer correspond to the requirements of artemisia selengensis Turcz.; the special fertilizer is dissolved into water and all the elements are in an ion state or a chelating state and can be rapidly absorbed by crops; the preparation method is simple and feasible and is convenient to operate; and energy consumption processes including heating, combusting and the like are not needed in a preparation process, and only simple weighing and mixing processes are needed so that the production cost is low. The special fertilizer can be used for improving the quality of artemisia selengensis Turcz. and increasing the yield of artemisia selengensis Turcz.; the fertilizer utilization rate is improved and the wastes of fertilizer resources are reduced; and the agricultural surface source pollution is alleviated and the ecological environment is protected.