Granular boron fertilizer and preparation method thereof

Abstract

The invention relates to the technical field of boron fertilizer preparation, and discloses a granular boron fertilizer prepared by the steps: selecting raphite mineral powder, borax, boric acid and methylene urea as preparation raw materials, mixing the raw materials according to a ratio, and then carrying out polymerization reaction under the action of an acid medium, so as to obtain the granular boron fertilizer. The raphite mineral powder is a natural raphite aggregate with the hardness of 2.5 and the relative density of 1.96. According to the granular boron fertilizer and the preparation method thereof, the methylene urea is added, so that polymerization, bonding and coating granulation of boron fertilizers with different fertilizer efficiencies are well realized, quick-acting, medium-acting and long-acting balanced release of boron nutrients of the finished multi-effect granular boron fertilizer can be realized under the chemical bonding effect, the polymerization effect and the coating effect, and the utilization efficiency of the boron fertilizer is improved; and meanwhile, in the release and transformation process of the product in soil, the methylene urea can improve the activity of soil microorganisms and promote sufficient absorption and transformation of boron nutrients, the fertilizer efficiency of the boron fertilizer can be fully exerted, and the requirement of crops for the boron nutrients in the whole growth period is met.

Description

technical field [0001] The invention relates to the technical field of boron fertilizer production, in particular to a granular boron fertilizer and a production method thereof. Background technique [0002] my country's boron ore has three deficiencies: low quantity, low grade, and high impurity content. my country's boron ore resources are seriously insufficient, and a large area of ​​cultivated soil is deficient in boron, while field crops require a large amount of boron, such as rape, cotton, sugar beet, fruit, etc. At present, The main boron fertilizer products used in China mainly include: Borax decahydrate, with a pure boron content of about 10.9%, is a colorless transparent crystal or powder, and is the most commonly used boron supplement product in my country. The disadvantage is that the aqueous solution is alkaline and cannot be mixed with most pesticides, the utilization rate of boron is low, and the effect of boron supplementation is limited; Loss can easily cause...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a granular boron fertilizer and its production method, which has the advantages of "improving the utilization rate of boron element", and solves the problem of "difficult to preserve and poor effect".

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