Preparation method for agricultural fulvate with high activity

Abstract

The invention discloses a preparation method for agricultural fulvate with high activity, belonging to the technical field of agriculture. The method employs a combination of oxidative degradation and activation technology and molecular weight cut-off and grading technology, uses medical stone and low-rank coal as raw materials and prepares the novel mineral-derived fulvate through oxidation and activation with a green oxidizing agent system at first and membrane filtration, purification and enrichment next. The prepared fulvate has high purity, good activity and high water-solubility and has the characteristics of safety, environment friendliness, no irritation, substantial yield increase and quality improvement effect, long shelf life, etc. Moreover, raw materials are widely available, and the method is easy to realize industrial production and has wide application prospect.

Description

technical field

[0001] The invention relates to a preparation method of highly active agricultural fulvic acid salt, which belongs to the field of agricultural technology. Background technique

[0002] Fulvic acid is the part with the smallest molecular weight, the highest solubility, and the best biological activity among humic acids, and is easily absorbed and utilized by crops. In recent years, many reports have affirmed the good application effect of fulvic acid and its salts in agriculture, mainly in the following aspects: improving soil, improving fertilizer efficiency, stimulating crop growth, enhancing crop stress resistance, and improving crop quality. It is often used as foliar fertilizer, organic fertilizer or flushing fertilizer. The main methods of use are seed dressing, root irrigation, drip irrigation or flushing with water, etc. As the country vigorously promotes the production of green and pollution-free organic food, and carries out comprehensive environme...

Examples

Embodiment 1

[0018] The preparation method of the highly active agricultural fulvic acid salt described in the present embodiment, the specific steps are as follows:

[0019] (1) Dry the young coal until the water content is 15%, crush it and pass it through an 80-mesh sieve to obtain young coal powder, then crush the rice stone and pass it through an 80-mesh sieve to obtain rice powder, then mix the rice powder with The young pulverized coal is mixed according to the weight ratio of 1:500 to obtain the mixed powder for subsequent use, wherein the young pulverized coal is lignite;

[0020] (2) According to the mass ratio of potassium hydroxide solution: peracetic acid solution: hydrogen peroxide solution = 1:1:50, the three are pre-mixed to obtain the oxidized solution, and the potassium hydroxide solution is 10% by mass. %, the mass percent concentration of peracetic acid in the peracetic acid solution is 20%, and the mass percent concentration of hydrogen peroxide in the hydrogen peroxid...

Embodiment 2

[0052] The preparation method of the highly active agricultural fulvic acid salt described in the present embodiment, the specific steps are as follows:

[0053] (1) Dry the young coal until the water content is 18%, crush it and pass it through a 90-mesh sieve to obtain young coal powder, then crush the rice stone and pass it through a 90-mesh sieve to obtain rice powder, then mix the rice powder with The young pulverized coal is mixed according to the weight ratio of 1:650 to obtain the mixed powder for subsequent use, wherein the young pulverized coal is peat;

[0054] (2) Pre-mix the three according to the mass ratio of potassium hydroxide solution: peracetic acid solution: hydrogen peroxide solution = 1:3:65 to obtain an oxidizing solution for later use, wherein the mass fraction of potassium hydroxide solution is 15 %, the mass percent concentration of peracetic acid in the peracetic acid solution is 15%, and the mass percent concentration of hydrogen peroxide in the hyd...

Embodiment 3

[0081] The preparation method of the highly active agricultural fulvic acid salt described in the present embodiment, the specific steps are as follows:

[0082] (1) Dry the young coal until the water content is 20%, crush it and pass it through a 100-mesh sieve to obtain young coal powder, then crush the rice stone and pass it through a 100-mesh sieve to obtain rice powder, then mix the rice powder with The young pulverized coal is mixed according to the weight ratio of 1: 800 to obtain the mixed powder for subsequent use, wherein the young pulverized coal is a mixture of lignite and peat in a weight ratio of 1:1;

[0083] (2) According to the mass ratio of potassium hydroxide solution: peracetic acid solution: hydrogen peroxide solution = 1:5:80, the three are pre-mixed to obtain the oxidized solution, and the potassium hydroxide solution is 20% by mass. %, the mass percent concentration of peracetic acid in the peracetic acid solution is 10%, and the mass percent concentrat...

technical field

[0001] The invention relates to a preparation method of highly active agricultural fulvic acid salt, which belongs to the field of agricultural technology. Background technique

[0002] Fulvic acid is the part with the smallest molecular weight, the highest solubility, and the best biological activity among humic acids, and is easily absorbed and utilized by crops. In recent years, many reports have affirmed the good application effect of fulvic acid and its salts in agriculture, mainly in the following aspects: improving soil, improving fertilizer efficiency, stimulating crop growth, enhancing crop stress resistance, and improving crop quality. It is often used as foliar fertilizer, organic fertilizer or flushing fertilizer. The main methods of use are seed dressing, root irrigation, drip irrigation or flushing with water, etc. As the country vigorously promotes the production of green and pollution-free organic food, and carries out comprehensive environme...

Examples

Embodiment 1

[0018] The preparation method of the highly active agricultural fulvic acid salt described in the present embodiment, the specific steps are as follows:

[0019] (1) Dry the young coal until the water content is 15%, crush it and pass it through an 80-mesh sieve to obtain young coal powder, then crush the rice stone and pass it through an 80-mesh sieve to obtain rice powder, then mix the rice powder with The young pulverized coal is mixed according to the weight ratio of 1:500 to obtain the mixed powder for subsequent use, wherein the young pulverized coal is lignite;

[0020] (2) According to the mass ratio of potassium hydroxide solution: peracetic acid solution: hydrogen peroxide solution = 1:1:50, the three are pre-mixed to obtain the oxidized solution, and the potassium hydroxide solution is 10% by mass. %, the mass percent concentration of peracetic acid in the peracetic acid solution is 20%, and the mass percent concentration of hydrogen peroxide in the hydrogen peroxid...

Embodiment 2

[0052] The preparation method of the highly active agricultural fulvic acid salt described in the present embodiment, the specific steps are as follows:

[0053] (1) Dry the young coal until the water content is 18%, crush it and pass it through a 90-mesh sieve to obtain young coal powder, then crush the rice stone and pass it through a 90-mesh sieve to obtain rice powder, then mix the rice powder with The young pulverized coal is mixed according to the weight ratio of 1:650 to obtain the mixed powder for subsequent use, wherein the young pulverized coal is peat;

[0054] (2) Pre-mix the three according to the mass ratio of potassium hydroxide solution: peracetic acid solution: hydrogen peroxide solution = 1:3:65 to obtain an oxidizing solution for later use, wherein the mass fraction of potassium hydroxide solution is 15 %, the mass percent concentration of peracetic acid in the peracetic acid solution is 15%, and the mass percent concentration of hydrogen peroxide in the hyd...

Embodiment 3

[0081] The preparation method of the highly active agricultural fulvic acid salt described in the present embodiment, the specific steps are as follows:

[0082] (1) Dry the young coal until the water content is 20%, crush it and pass it through a 100-mesh sieve to obtain young coal powder, then crush the rice stone and pass it through a 100-mesh sieve to obtain rice powder, then mix the rice powder with The young pulverized coal is mixed according to the weight ratio of 1: 800 to obtain the mixed powder for subsequent use, wherein the young pulverized coal is a mixture of lignite and peat in a weight ratio of 1:1;

[0083] (2) According to the mass ratio of potassium hydroxide solution: peracetic acid solution: hydrogen peroxide solution = 1:5:80, the three are pre-mixed to obtain the oxidized solution, and the potassium hydroxide solution is 20% by mass. %, the mass percent concentration of peracetic acid in the peracetic acid solution is 10%, and the mass percent concentrat...

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