A kind of highly active humic acid trace element fertilizer and preparation method thereof

Abstract

The invention discloses a high-activity humic acid microelement fertilizer and a preparation method thereof. The method comprises the following step: adding the following components in parts by weight: 0.1 to 3 parts of EDTA (Ethylene Diamine Tetraacetic Acid) iron, 0.1 to 3 parts of EDTA manganese, 0.1 to 6 parts of EDTA zinc, 0.1 to 10 parts of boric acid, 10 to 15 parts of magnesium sulfate, 0.5 to 1 part of adjuvant, 1 to 5 parts of soil activator and 0 to 7 parts of completely water-soluble fertilizer fillers, into 6 to 15 parts of high-activity humic acid to be mixed until even mixing. According to the high-activity humic acid microelement fertilizer, the variety, the effective content and the utilization rate of microelements are improved, and the fertilizer can be completely dissolved in the water without residue generation, so that the environment friendliness is realized. The fertilizer is large in application range and can be applied under a hard water condition. In addition, the utilization rate of soil nutrients is greatly improved.

Description

technical field [0001] The invention relates to the technical field of fertilizer production, in particular to a highly active humic acid trace element fertilizer and a preparation method thereof. Background technique [0002] During the growth of crops, micronutrients are needed. Therefore, once there is a lack of trace elements, crops cannot grow healthily and normally, so certain trace elements need to be added to fertilizers. Most of the currently applied trace elements exist in the form of divalent metal ions. After entering the soil, they easily react with a large number of negative divalent carbonates and negative trivalent phosphates that are ubiquitous in the soil to form water-insoluble carbonates and phosphoric acids. Salt is not easily absorbed by plants. Therefore, trace elements are generally formed into chelates in fertilizers to increase the stability of trace elements and avoid the formation of water-insoluble carbonates and phosphates, which greatly impro...

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Problems solved by technology

[0005] However, the humic acid trace element fertilizer prepared by these prior art generally has low activation ability of soil decomposing phosphorus and silicon; humic acid activity is low, and hard water resistance is insufficient; Few, the problem of low utilization