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A kind of disease-resistant macroelement liquid water-soluble fertilizer and preparation method thereof

A technology of a large number of elements, water-soluble fertilizers, applied in liquid fertilizers, fertilization methods, urea compound fertilizers, etc., can solve the problems of affecting the nutrient absorption rate of water-soluble crops, the disease resistance of crops is not improved, and the crystallization is easy to prevent flocculation. Crystallization at low temperature, prevention of precipitation side reactions, and low cost

Active Publication Date: 2019-07-30
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned patents all have the disadvantages of easy crystallization at low temperature, long-term storage and easy flocculation, no improvement in the disease resistance of crops, phosphorus in water-soluble fertilizers is easy to form precipitation with medium and trace elements, and affects the water solubility of fertilizers and crop nutrient absorption rate.

Method used

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  • A kind of disease-resistant macroelement liquid water-soluble fertilizer and preparation method thereof
  • A kind of disease-resistant macroelement liquid water-soluble fertilizer and preparation method thereof
  • A kind of disease-resistant macroelement liquid water-soluble fertilizer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0053] A disease-resistant, anti-flocculation macronutrient liquid water-soluble fertilizer, per liter of liquid water-soluble fertilizer:

[0054]

[0055] Preparation:

[0056] Add polyphosphoric acid to 75% water, mix well and add ferrous sulfate heptahydrate to make polyphosphoric acid and iron form a chelated ferrous compound; add potassium dihydrogen phosphate and boric acid in sequence, and raise the temperature to 70°C And keep stirring, add urea after the potassium dihydrogen phosphate and boric acid are completely dissolved, and keep stirring in the reaction kettle until the urea is completely dissolved; add 20% water-soluble chitosan, phytase, sodium citrate and magnesium succinate in another reaction kettle and stirred until completely dissolved; mix the solution containing additives with the nutrient solution containing a large number of elements, add the remaining water and stir until uniform, and fill it when the temperature drops below 40°C. Liquid water so...

Embodiment 2

[0058] A disease-resistant, anti-flocculation macronutrient liquid water-soluble fertilizer, per liter of liquid water-soluble fertilizer:

[0059]

[0060] Preparation:

[0061] Add polyphosphoric acid to 80% water, mix well and add ferrous sulfate heptahydrate to form a chelated ferrous compound between potassium polyphosphate and iron; add potassium dihydrogen phosphate and boric acid in sequence, and the temperature rises to 70 ℃ and stirring continuously, add urea after the potassium dihydrogen phosphate and boric acid are completely dissolved, and stir continuously in the reaction kettle until the urea is completely dissolved; add water-soluble chitosan, phytase, and sodium citrate to 15% water, In another reaction kettle and stir until completely dissolved; mix the solution containing the additive with the nutrient solution containing a large amount of elements, add the remaining water and stir until uniform, after the temperature drops below 40°C, fill it to obtain ...

Embodiment 3

[0063] A disease-resistant, anti-flocculation macronutrient liquid water-soluble fertilizer, per liter of liquid water-soluble fertilizer:

[0064]

[0065] Preparation:

[0066] Add polyphosphoric acid to 70% water, mix well and then add ferrous sulfate heptahydrate to make sodium hexametaphosphate and iron form a chelated ferrous compound; add potassium dihydrogen phosphate and boric acid in sequence, and the temperature rises to 70 ℃ and stirring continuously, add urea after potassium dihydrogen phosphate and boric acid are completely dissolved, and stir continuously in the reaction kettle until the urea is completely dissolved; add water-soluble chitosan, phytase, and magnesium succinate to 25% water, Put it in another reaction kettle and stir until it is completely dissolved; mix the solution containing the additive with the nutrient solution containing a large amount of elements, add the remaining water and stir until uniform, and fill it to obtain a liquid water-solu...

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Abstract

The invention relates to disease-resistant macroelement liquid water-soluble fertilizer and a preparation method thereof. In the liquid water-soluble fertilizer, the urea content is 300 to 310g / L; the content of phosphorus-containing polymers is 333 to 343 g / L; the content of monopotassium phosphate is 127 to 137g / L; the content of boracic acid is 23 to 37g / L; the content of iron sulfate heptahydrate is 180 to 220g / L; the content of water-soluble chitosan is 3 to 8g / L; the content of phytase is 1 to 3g / L; the content of antiflocculating agents is 2 to 4g / L. During the preparation, firstly, iron and the phosphorus-containing polymers are chelated; macroelements and trace elements are sequentially dissolved and are then mixed with a solution containing additives. The additives such as the water-soluble chitosan, the phytase and the antiflocculating agents are added into the water-soluble fertilizer, so that the obtained macroelement liquid water-soluble fertilizer has the advantages of high nutrition content and full water solubility and also has the characteristics of resisting flocculating and improving crop disease resistant capability.

Description

technical field [0001] The invention relates to a disease-resistant macroelement liquid water-soluble fertilizer and a preparation method thereof, belonging to the technical field of water-soluble fertilizers. Background technique [0002] Water-soluble fertilizer is a multi-element fertilizer that is completely soluble in water. It is characterized by being able to dissolve quickly in water, and is more easily absorbed by crops, with a relatively high absorption rate. More importantly, it can be applied to facility agriculture such as drip irrigation to realize the integration of water and fertilizer, and achieve the effects of saving water, fertilizer, labor and increasing production. With the continuous deepening of agricultural intensification, along with the development of modern agriculture and management models and technologies such as facilities, mechanization, and automation, water-soluble fertilizers will be more widely used and have a broad market space. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00A01C21/00
CPCA01C21/00C05B7/00C05G3/00C05G3/20C05G5/23C05B17/00C05C9/00C05D9/02
Inventor 沈玉文刘兆辉林海涛张玉凤杨力刘苹宋效宗李燕王江涛
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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