Water-soluble fertilizer synergist and preparation method thereof

Abstract

The invention belongs to the technical field of agriculture, and particularly relates to a water-soluble fertilizer synergist and a preparation method thereof. The water-soluble fertilizer synergist is a dried product of fermentation liquor obtained by performing submerged fermentation on cordyceps fungus strains and then performing solid-liquid separation. The strain is one of Hirsutella sinensis, Paecilomyces hepiali (PaecilomyceshepialiQ.T.Chen&R.Q.Dai), Paecilomycesmilitaris, Acremonium terricola, and Cordyceps hawkesii Gray. The synergist has the advantages that (1) the utilization rate of the water-soluble fertilizer is promoted; (2) the application amount of the water-soluble fertilizer is reduced; (3) the effect is stable, and no toxicity or residue exists.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and in particular relates to a water-soluble fertilizer synergist and a preparation method thereof. Background technique [0002] Water-soluble fertilizers refer to compound fertilizers containing nitrogen, phosphorus, potassium, calcium, magnesium, trace elements, amino acids, humic acid, alginic acid, etc. that can be completely dissolved in water. From the form, there are two kinds of solid water-soluble fertilizer and liquid water-soluble fertilizer. In terms of nutrient content, there are macroelement water-soluble fertilizers, medium-element water-soluble fertilizers, trace element water-soluble fertilizers, amino acid-containing water-soluble fertilizers, humic acid-containing water-soluble fertilizers, organic water-soluble fertilizers, etc. [0003] At present, the existing water-soluble fertilizer technology develops rapidly, has good effect and is convenient to apply, and has been...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing water-soluble fertilizer technology develops rapidly, has good effect and is convenient to apply, and has been widely used, but there are also many defects: 1. Water-soluble fertilizers have a short period of effectiveness, and ordinary water-soluble fertilizers are applied once a week or so, resulting in Frequent use, such a short period of time, the crop absorption is limited, so that a large amount of nitrogen, phosphorus and potassium nutrients accumulate in the soil, causing secondary salinization, soil compaction, soil acidification and other problems are becoming more and more serious, and fertilizers fixed in the soil will pollute The soil environment affects the soil ecology of farmland, and the consequences of soil degradation are unimaginable

2. The nutrient structure of fertilization lacks scientificity and rationality. The addition of modern agricultural fertilizers is not scientifically applied based on soil conditions and the needs of crops. Usually, the amount of addition is directly stipulated. This application method only provides the necessary nutrients for crops. , cannot provide balanced nutrients for crops, and the active ingredients are unstable after being applied to the soil, and are easily leached or lost by volatilization. The role of crop resistance

3. The domestic and foreign research on fertilizer synergists for improving fertilizer utilization is mainly from chemically synthesized nitrification inhibitors, urease inhibitors, and ammonia stabilizers. There are also direct additions of plant growth regulators to fertilizer components as fertilizer boosters. Efficacy agent, but there are defects such as unstable effect, high toxicity, large impact on crops or soil, and environment

[0004] In addition, industrial large-scale cultivation of Cordyceps fungus mostly adopts liquid submerged fermentation. After the fermentation is completed, the mycelium is extracted by solid-liquid separation. The fermented liquid that belongs to it needs to be sterilized and discarded, which not only wastes resources but also increases costs.

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