Water-soluble integrated zinc sulfate monohydrate granular fertilizer and preparation method thereof

Abstract

The invention discloses a water-soluble integrated zinc sulfate monohydrate granular fertilizer and a preparation method thereof. The water-soluble integrated zinc sulfate monohydrate granular fertilizer is prepared from the following components in percentage by mass: 0.1 to 6.0 percent of a chelating agent, 0.2 to 0.5 percent of phosphoric acid, 0.2 to 0.5 percent of monopotassium phosphate, 0 to3.0 percent of an adhesive, 1.0 to 5.0 percent of urea and the balance being zinc sulfate monohydrate. The zinc sulfate monohydrate, the chelating agent, the phosphoric acid and the monopotassium phosphate are formulated and chelated, so that on one hand, zinc in the obtained zinc fertilizer is in an organic chelated state, the water solubility is good, and the zinc fertilizer is easier to absorbby soil, so that the fertilizer efficiency of the obtained zinc fertilizer is greatly improved; and on the other hand, the antagonism of zinc and other elements is overcome, the blending property andthe buffering property are improved, the zinc fertilizer and macroelements are applied at the same time, and the zinc fertilizer is more suitable for water and fertilizer integration and modern agriculture.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a water-soluble integrated zinc sulfate monohydrate granular fertilizer and a preparation method thereof. Background technique [0002] Zinc is one of the essential trace elements for crops. The content of zinc in crops is generally several parts per hundred thousand to several parts per million of dry matter weight. Although its content is very small, it has a great effect. According to the test results, the most sensitive crops to zinc fertilizers are corn, soybean and various beans, sorghum, cotton, flax, tomato, castor, citrus, grape, peach, tung tree, tallow, apple, sugar beet, lemon, etc. Among them, lemon is particularly sensitive to zinc and can be used as a good indicator plant. Potatoes, onions, rice, clover, etc. are moderately sensitive to zinc fertilizers. Wheat, barley, carrots, alfalfa, peas, etc. are less sensitive to zinc fertilizers. Applying appropriate amount of zinc fertili...

AI Technical Summary

Problems solved by technology

However, these measures all have obvious deficiencies and insurmountable limiting factors

For example, if inorganic zinc is added to solid fertilizer, the soil will be fixed obviously, with low activity and poor application effect; the application of liquid micro-fertilizer is affected by factors such as technology and equipment, and it is impossible to promote it on a large scale in current agricultural production.

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