High-phosphorus high-zinc liquid compound fertilizer and preparation method thereof

A compound fertilizer, high zinc technology, applied in fertilization methods, fertilizer mixtures, fertilization devices, etc., can solve the problems of insoluble zinc, affecting crop yield and quality, etc., to achieve high total nutrient content, stable physical and chemical shape, and improved The effect of utilization

Active Publication Date: 2014-03-26
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the zinc nutrient element cannot be supplemented in time on the zinc-deficient soil, it will seriously affect the yield and quality of crops.
However, in high-phosphorus liquid fertilizers, zinc can easily form insoluble precipitates with phosphorus.

Method used

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  • High-phosphorus high-zinc liquid compound fertilizer and preparation method thereof
  • High-phosphorus high-zinc liquid compound fertilizer and preparation method thereof
  • High-phosphorus high-zinc liquid compound fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The high phosphorus and high zinc liquid compound fertilizer described in the present embodiment contains each component of following parts by weight:

[0042]

[0043] The concrete preparation method of described high phosphorus and high zinc liquid compound fertilizer comprises the steps:

[0044] S1. Sodium octaborate tetrahydrate, EDTA-Mm, and urea were dissolved in water and stirred for 10 minutes to obtain a clear and transparent mother liquor;

[0045] S2. Slowly add zinc oxide to the mother liquor in S1, stir while adding, and form a muddy suspension after 20 minutes;

[0046] S3. Slowly add phosphoric acid to the suspension in S2, stir while adding, keep the reaction stable at 80°C, and form a viscous and clear fluid after 10 minutes;

[0047] S4. Keep the temperature generated by the reaction in S3 at 55° C., quickly add ammonium nitrate, urea phosphate and ammonium polyphosphate in sequence, and stir for 10 minutes to form a clear and transparent fluid; ...

Embodiment 2

[0053] The high phosphorus and high zinc liquid compound fertilizer described in the present embodiment contains each component of following parts by weight:

[0054]

[0055] The concrete preparation method of described high phosphorus and high zinc liquid compound fertilizer comprises the steps:

[0056] S1. Sodium octaborate tetrahydrate, EDTA-Mm, and urea were dissolved in water and stirred for 12 minutes to obtain a clear and transparent mother liquor;

[0057] S2. Slowly add zinc oxide to the mother liquor in S1, stir while adding, and form a muddy suspension after 20 minutes;

[0058] S3. Slowly add phosphoric acid to the suspension in S2, stir while adding, keep the reaction stable at 85°C, and form a viscous and clear fluid after 15 minutes;

[0059] S4. Keep the temperature generated by the reaction in S3 at 60°C, quickly add urea phosphate, ammonium nitrate and ammonium polyphosphate in sequence, and stir for 10 minutes to form a clear and transparent fluid;

...

Embodiment 3

[0065] The high phosphorus and high zinc liquid compound fertilizer described in the present embodiment contains each component of following parts by weight:

[0066]

[0067] The concrete preparation method of described high phosphorus and high zinc liquid compound fertilizer comprises the steps:

[0068] S1. Sodium octaborate tetrahydrate, EDTA-Mm, and urea were dissolved in water and stirred for 15 minutes to obtain a clear and transparent mother liquor;

[0069] S2. Slowly add zinc oxide to the mother liquor in S1, stir while adding, and form a muddy suspension after 25 minutes;

[0070] S3. Slowly add phosphoric acid to the suspension in S2, stir while adding, keep the reaction stable at 75°C, and form a viscous and clear fluid after 10 minutes;

[0071] S4. Keep the temperature generated by the reaction in S3 at 50°C, quickly add ammonium polyphosphate, urea phosphate and ammonium nitrate in sequence, and stir for 15 minutes to form a clear and transparent fluid;

...

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Abstract

The invention discloses a high-phosphorus high-zinc liquid compound fertilizer and a preparation method thereof. The compound fertilizer comprises the following raw materials in parts by weight: 0.8-1.2 parts of disodium octoborate tetrahydrate, 0.7-1.1 parts of EDTA-Mn, 8-12 parts of zinc fertilizer, 0.6-1 part of magnesium fertilizer, 40-46 parts of phosphate, 5-7 parts of urea, 0.8-1.2 parts of ammonium nitrate, 1.5-2.5 parts of urea phosphate, 1.5-2.5 parts of ammonium polyphosphate, 4-6 parts of potassium hydroxide, 1.5-2.5 parts of potassium chloride, 1.5-2.5 parts of a cosolvent and 20-30 parts of water. The compound fertilizer is a three-element liquid fertilizer containing trace elements, is high in overall nutrient content, stable in physical and chemical shape, and free from the phenomena of crystallization, precipitation and layering under the high-temperature, low-temperature and ordinary temperature conditions, can obviously improve the fertilization efficiency, and meanwhile avoids the zinc deficiency symptoms of plants.

Description

technical field [0001] The invention belongs to the technical field of fertilizer production, and in particular relates to a large-scale and medium-trace element fertilizer applied to crops, in particular to a high-phosphorus, high-zinc liquid compound fertilizer and a preparation method thereof. Background technique [0002] With the continuous promotion and application of water and fertilizer integration technology, liquid fertilizers have gradually become popular in our country. At present, my country's liquid fertilizer is still in the preliminary research stage, especially the research on high-concentration and high-compound liquid fertilizer is basically blank in China. Liquid fertilizer is the first choice fertilizer for irrigation equipment due to its advantages of instant dissolution and uniformity. Due to its ready-to-use, no need for stirring to dissolve, it is very suitable for automated fertilization. In countries where irrigation technology and automated fert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00A01C21/00
Inventor 张承林涂攀峰邓兰生龚林
Owner SOUTH CHINA AGRI UNIV
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