Trace element water-soluble composite fertilizer in fulvic acid and preparation method thereof

A medium-trace element, water-soluble technology, applied in urea compound fertilizer, ammonium orthophosphate fertilizer, alkaline orthophosphate fertilizer, etc., can solve problems such as low nutrient utilization rate, unreasonable fertilizer ratio, and soil fertility decline , to achieve the effect of reducing nutrient loss, improving fertilizer utilization rate and improving fertility

Inactive Publication Date: 2017-09-15
MEISHAN JINWEITE FERTILIZER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current water-soluble fertilizers contain less trace elements, and the unreasonable ratio of fertilizers leads to poor fertilizer efficiency. Long-term use will easily lead to nutrient loss in the soil, soil acidificat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A water-soluble compound fertilizer with trace elements in fulvic acid, which is made of the following raw materials in weight ratio: 200 parts of urea, 100 parts of monoammonium phosphate, 130 parts of potassium sulfate, 10 parts of superphosphate, 40 parts of fulvic acid 1 part, 1 part of pullulan-polyglutamic acid cross-linked polymer, 5 parts of sodium selenite, 10 parts of EDTA, 1 part of superfine oyster powder, 5 parts of magnesium sulfate, 1 part of compound microbial agent;

[0029] The pullulan-polyglutamic acid cross-linked polymer is prepared by the following method: the pullulan solution is added dropwise to the polyglutamic acid solution at a rate of 5 drops / s, and at 30° C. Stir the reaction for 2 hours, precipitate the mixed solution with absolute ethanol, collect the precipitate by vacuum filtration, dissolve the precipitate with deionized water, place it in a dialysis bag for dialysis for 2 hours, and freeze-dry the dialysis retentate to obtain pullulan...

Embodiment 2

[0041] A water-soluble compound fertilizer with trace elements in fulvic acid, which is made of the following raw materials in the weight ratio: 400 parts of urea, 200 parts of monoammonium phosphate, 140 parts of potassium sulfate, 20 parts of superphosphate, and 60 parts of fulvic acid 10 parts of pullulan-polyglutamic acid cross-linked polymer, 10 parts of sodium selenite, 20 parts of EDTA, 5 parts of superfine oyster powder, 15 parts of magnesium sulfate, 10 parts of compound microbial agent;

[0042] The pullulan-polyglutamic acid cross-linked polymer is prepared by the following method: the pullulan solution is added dropwise to the polyglutamic acid solution at a rate of 5 drops / s, and at 30° C. Stir the reaction for 2 hours, precipitate the mixed solution with absolute ethanol, collect the precipitate by vacuum filtration, dissolve the precipitate with deionized water, place it in a dialysis bag for dialysis for 2 hours, and freeze-dry the dialysis retentate to obtain p...

Embodiment 3

[0054] A water-soluble compound fertilizer with trace elements in fulvic acid, which is made of the following raw materials in weight ratio: 300 parts of urea, 150 parts of monoammonium phosphate, 135 parts of potassium sulfate, 15 parts of superphosphate, and 50 parts of fulvic acid 5 parts, 5 parts of pullulan-polyglutamic acid cross-linked polymer, 8 parts of sodium selenite, 18 parts of EDTA, 3 parts of superfine oyster powder, 10 parts of magnesium sulfate, 5 parts of compound microbial agent.

[0055] The pullulan-polyglutamic acid cross-linked polymer is prepared by the following method: the pullulan solution is added dropwise to the polyglutamic acid solution at a rate of 5 drops / s, and at 30° C. Stir the reaction for 2 hours, precipitate the mixed solution with absolute ethanol, collect the precipitate by vacuum filtration, dissolve the precipitate with deionized water, place it in a dialysis bag for dialysis for 2 hours, and freeze-dry the dialysis retentate to obtain...

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Abstract

The invention discloses a trace element water-soluble composite fertilizer in fulvic acid and a preparation method of the trace element water-soluble composite fertilizer and belongs to the technical field of fertilizers. The trace element water-soluble composite fertilizer is prepared from the following raw materials in parts by weight: 200-400 parts of urea, 100-200 parts of monoammonium phosphate, 130-140 parts of potassium sulfate, 10-20 parts of calcium superphosphate, 40-60 parts of fulvic acid, 1-10 parts of a pullulan-polyglutamic acid cross-linked polymer, 5-10 parts of sodium selenite, 10-20 parts of EDTA (Ethylene Diamine Tetraacetic Acid), 1-5 parts of a superfine oyster powder, 5-15 parts of magnesium sulfate and 1-10 parts of a composite microorganism agent. The fertilizer is reasonable in formula, balance in nutrient, good in water solubility, rich in multiple trace elements, has a great number of beneficial microorganisms, is capable of improving stress resistance of plants, promoting absorption of plant nutrition and remarkably increasing the utilization rate of chemical fertilizers, and remarkable in yield increase effect on wheat.

Description

technical field [0001] The invention relates to a water-soluble compound fertilizer, in particular to a water-soluble compound fertilizer containing trace elements in fulvic acid and a preparation method thereof. Background technique [0002] As we all know, China is a large agricultural production country. my country feeds more than 20% of the world's population on less than 10% of the world's arable land. In order to continuously increase the production of agricultural products and food, my country uses more and more chemical fertilizers. The fertilizers currently used on a large scale in my country still belong to ordinary compound fertilizers or single chemical fertilizers. Compound fertilizers are roughly divided into formulated compound fertilizers and blended compound fertilizers. Formulated compound fertilizers include monoammonium phosphate, diammonium phosphate, nitrophosphate fertilizer, potassium nitrate, potassium dihydrogen phosphate, and three-component compou...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/02C05G3/04C05G3/60C05G3/80
CPCC05B1/02C05G3/00C05G3/60C05G3/80C05B7/00C05C9/00C05D5/00C05D9/02C05F1/00C05F11/02C05F11/08
Inventor 刘丹胡睿
Owner MEISHAN JINWEITE FERTILIZER
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