Organic fertilizer additive and preparation method thereof

Abstract

The invention discloses an organic fertilizer additive and a preparation method thereof and relates to the technical field of fertilizer additives. The organic fertilizer additive comprises the following raw materials in percentage by weight: 2% of liquorice, 2% of branches and leaves of dried kudzu vine, 2% of dried wild chrysanthemum, 1% of oligosaccharide, 1.5% of dried yeast and 91.5% of water. The preparation method comprises the following steps of putting liquorice, the branches and leaves of dried kudzu vine and dried wild chrysanthemum into boiled water, soaking for 4 hours and then filtering the residues of liquorice, the branches and leaves of dried kudzu vine and dried wild chrysanthemum and impurities, standing the filtrate, putting oligosaccharide and dried yeast and fermenting for 30 days until a sour is formed to obtain the organic fertilizer additive. According to the preparation method disclosed by the invention, since the fermentation broth obtained by fermenting soaking solutions of three plants is used as the organic fertilizer additive to provide comprehensive nutrition for crops, the fertilizer efficiency is long, the organic substances in soil can be increased and updated, the propagation of microorganisms is promoted, physical and chemical properties and the biological activity of soil are improved and the organic fertilizer additive is a main nutrient for green food production.

Description

technical field [0001] The invention relates to the technical field of fertilizer additives, in particular to an organic fertilizer additive and a preparation method thereof. Background technique [0002] my country is a large agricultural country with a large population and insufficient arable land resources. It feeds 21% of the world's population with 9% of the world's arable land. my country is also the country with the largest amount of fertilizer production and use in the world, among which the production and use of nitrogen fertilizer ranks first in the world, accounting for 9% of the world's arable land but consumes 30% of the world's fertilizer; the reason is that my country's fertilizer utilization rate Relatively low; the existing fertilizers for plants are mainly: [0003] Nitrogen fertilizer: that is, chemical fertilizers with nitrogen nutrients as the main component, including ammonium bicarbonate, urea, ammonium ammonium, ammonia water, ammonium chloride, ammon...

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Problems solved by technology

[0009] (2) Organic pollutants mainly include phthalates, nitroaromatics, polycyclic aromatic hydrocarbons and halogenated hydrocarbons, etc., and their sources are mainly sludge, crop straw, etc., and crop straw is easily affected by pesticides, weeding, etc. Pollution from pesticides and tail gas emitted by automobiles and tractors, which also indirectly affects the safety of fertilizers;

[0011] (4) Pathogenic bacteria and insect eggs are derived from the addition of untested microbial strains, which can cause human or animal infections. In the past ten years, due to the continuous expansion of new varieties of biological fertilizers, the number of production strains has increased to more than 100 at present. Unsafe factors in the use of strains are also gradually expanding, and strains harmful to humans, animals and plants may flow into the production process;

[0012] (5) Other sources of pollution: After a series of incidents such as Sanlu milk powder, whether melamine waste residue can be used in fertilizer production has attracted the attention of some scientific research departments, experts and fertilizer companies. Some researchers have found that after applying melamine, large Melamine molecules were detected in both the roots and leaves of cabbage, suggesting that waste residues from melamine production cannot be directly applied as fertilizers