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Urea formaldehyde compound fertilizer containing chelating medium/trace element and preparation method thereof

A technology of medium and trace elements and compound fertilizers, which is applied in fertilizer mixtures, fertilization devices, applications, etc., to achieve the effects of improving utilization rate, using safety and environmental protection, and preventing crop deficiencies

Active Publication Date: 2013-09-25
SHANDONG BAOYUAN BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In my country, studies on combining medium and trace elements with slow-release fertilizers have been reported, but studies on combining medium and trace elements with slow-release fertilizers such as urea-formaldehyde after chelation are rare

Method used

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  • Urea formaldehyde compound fertilizer containing chelating medium/trace element and preparation method thereof
  • Urea formaldehyde compound fertilizer containing chelating medium/trace element and preparation method thereof
  • Urea formaldehyde compound fertilizer containing chelating medium/trace element and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Preparation of medium and trace element chelating solution:

[0031] Such as figure 1 As shown, select 30kg of high-quality fully water-soluble biochemical fulvic acid (fulvic acid content ≥ 50.0%, pH value 5.5), add 70L of water to dissolve, take 50L of biochemical fulvic acid solution and sodium nitrate with a concentration of 1mol / L After mixing 10L of the solution, add 10kg calcium nitrate, 5kg magnesium sulfate heptahydrate, 1kg borax, 0.7kg zinc sulfate heptahydrate, 0.5kg manganese sulfate, 0.4kg ferrous sulfate, 0.3kg copper sulfate pentahydrate and 0.2kg ammonium molybdate, Maintain a constant temperature of 50°C, stir at a rotational speed of 20r / min, and conduct a chelation reaction of medium and trace elements. The reaction time is controlled at 55h to obtain a chelation solution;

[0032] First, the amino acid solution with a mass percentage of 35% was removed from impurities to ensure that its stability constant was moderate. Take 50L of the above-men...

Embodiment 2

[0039] (1) Preparation of medium and trace element chelating solution:

[0040] Such as figure 1 As shown, select 30kg of high-quality fully water-soluble biochemical fulvic acid (fulvic acid content ≥ 50.0%, pH value 5.5), add 70L of water to dissolve, take 50L of biochemical fulvic acid solution and 10L of nitric acid with a concentration of 1mol / L After mixing the sodium solution, add 9kg calcium nitrate, 4kg magnesium sulfate heptahydrate, 1.3kg borax, 0.5kg zinc sulfate heptahydrate, 0.5kg manganese sulfate, 0.4kg ferrous sulfate, 0.3kg copper sulfate pentahydrate and 0.2kg ammonium molybdate , keep a constant temperature of 50°C, stir at a rotational speed of 20r / min, carry out a chelation reaction of medium and trace elements, and control the reaction time at 55h to obtain a chelation solution;

[0041] First, remove impurities with 35% amino acid solution by mass to ensure that its stability constant is moderate. Take 50L of the above-mentioned primary chelating solut...

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Abstract

The invention relates to a urea formaldehyde compound fertilizer containing a chelating medium / trace element and a preparation method thereof. The urea formaldehyde compound fertilizer comprises the following raw materials in parts by weight: 0.2-0.4 part of medium trace element chelating liquid, 4.5-5.5 parts of urea formaldehyde, 1.5-3.0 parts of monoammonium phosphate, 1.5-3.0 parts of potassium sulphate, 0.5-1.5 part of auxiliary material and 0.06-0.1 part of coated material. A slow-dissolving organic nitrogenous fertilizer synthetic process is effectively combined with a coated technology so as to realize the slow release and long-acting function of nitrogen, the balanced fertilization is paid attention to by taking the high efficiency, the environmental protection and the greenization as the aim, the utilization rate of the fertilizer is increased through the balanced application of nutrients, the release and the utilization of the fertilizer are completed through the combination of the fertilizer and soil, the medium trace element is supplemented while the requirements of crops in different growing periods on the nutrients are satisfied, and the occurrence of the nutrient deficiency symptoms of the crops is effectively avoided. The used materials are non-toxic, harmless, safe and environment-friendly in use.

Description

technical field [0001] The invention relates to the field of biotechnology, in particular to a urea-formaldehyde compound fertilizer containing trace elements in a chelated state and a preparation method thereof. Background technique [0002] In recent years, the consumption of chemical fertilizers has increased year by year. However, due to unreasonable utilization, the utilization rate of chemical fertilizers is low. The seasonal utilization rate of nitrogen fertilizer is only 20%-35%, phosphorus is 10%-20%, and potassium is 30%-35%, which not only causes direct economic losses, In addition, improper fertilization has caused environmental pollution in some areas, such as surface eutrophication, excessive nitrate nitrogen content in groundwater and vegetables, and increased nitrous oxide emissions. The serious imbalance of soil fertility has slowed down the increase in grain production, and there has been a phenomenon that farmers have increased production but not increase...

Claims

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Application Information

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IPC IPC(8): C05G3/08C05G3/90
Inventor 苏群孙磊刘宝德
Owner SHANDONG BAOYUAN BIOTECH CO LTD
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