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Method for preparing water-soluble fertilizer containing humic acid

A water-soluble fertilizer and humic acid technology, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve problems such as ignoring the addition of trace elements, affecting crop yields, and clogging the nozzles of sprayers

Inactive Publication Date: 2014-08-06
SINO AGRI SHUNTIAN ECOLOGICAL FERTILIZER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, water-soluble fertilizers containing humic acid have been widely used in agriculture. In use, it has been found that the water-soluble fertilizers containing humic acid in the prior art have the following problems: one is that many humic acid fertilizers mainly contain humic acid and a large number of elements Mainly, ignoring the addition of several trace elements
At present, farmers pay more attention to the use of macronutrient fertilizers. Trace elements are ignored because of their small amount, but the role of trace elements cannot be replaced by macroelements, thus affecting the final yield of crops.
The second is that some trace elements are directly added to humic acid, but potassium humate or sodium humate will react with acidic trace element raw materials to form flocculation, and then form precipitation, humic acid and trace elements become Ineffective state, resulting in great waste; in addition, precipitation will block the nozzle of the sprayer, which is not conducive to farmers' use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment one: the preparation method of this water-soluble fertilizer containing humic acid comprises the following steps:

[0054] ①Take 40kg of air-dried peat containing more than 60% humic acid, add 1.5mol / L nitric acid (HNO 3 ) 5000mL, after heating in a water bath at 80°C for 1.5h, centrifuge at 4000r / min for 20min, take out the solid and dry it;

[0055] ②Weigh 35kg of pretreated solid peat, put it into a container, add 180kg of water, add 5kg of potassium hydroxide 90% of the extractant, keep the temperature at 60°C, and extract the slurry for 4 hours; centrifuge on a centrifuge, filter out Potassium humate solution;

[0056] 3. in step 2. in the potassium humate solution that obtains, add the potassium dihydrogen phosphate through the 50kg of dissolving urea, 45kg, 8kg boric acid, 1.5kg ammonium molybdate;

[0057] ④ After dissolving 18kg of complexing agent ethylenediaminetetraacetic acid and 180kg of water, add 60kg of ferrous sulfate, 45kg of copper sulfa...

Embodiment 2

[0059] Embodiment two: the preparation method of this water-soluble fertilizer containing humic acid comprises the following steps:

[0060] ①Take 50kg of air-dried peat containing more than 60% humic acid, add 1.5mol / L nitric acid (HNO 3 ) 6000mL, after heating in a water bath at 80°C for 2h, centrifuge at 4000r / min for 30min, take out the solid and dry it;

[0061] ② Weigh 40kg of pretreated solid peat, put it into a container, add 200kg of water, add 6kg of potassium hydroxide 90% of the extractant, keep the temperature at 60°C, and extract the slurry for 5 hours; centrifuge on a centrifuge, filter out Potassium humate solution;

[0062] 3. in step 2. in the potassium humate solution that obtains, add the potassium dihydrogen phosphate through the 60kg of dissolving urea, 50kg, 10kg boric acid, 2kg ammonium molybdate;

[0063] ④ After dissolving 22kg of complexing agent ethylenediaminetetraacetic acid and 250kg of water, add 70kg of ferrous sulfate, 50kg of copper sulfate...

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Abstract

The invention discloses a method for preparing a water-soluble fertilizer containing humic acid. The method mainly comprises the following steps: pre-treating peat, extracting humic acid from the pre-treated peat, and adding dissolved urea, monopotassium phosphate, boric acid, ammonium molybdate and microelements subjected to complexation; the water-soluble fertilizer containing humic acid, prepared withthe method provided by the invention, is complete and balanced in nutrition, good in suspension property, and convenient to apply. The results of a field trial prove that the yield of cucumbers, to which the water-soluble fertilizer containing humic acid is applied, is higher than that of a comparison group, the input-output ratio of an area, to which the water-soluble fertilizer containing humic acid is applied, is 1:9.22, and the input-output ratio of an area, to which the water and conventional fertilizer are applied, is 1:5.23.

Description

technical field [0001] The invention relates to a method for preparing agricultural fertilizers, in particular to a method for preparing water-soluble fertilizers containing humic acid. Background technique [0002] Humic acid is a class of polymer substances that widely exist in the natural environment. It is formed by animal and plant residues through complex biological and chemical actions, accounting for 50% to 80% of the total organic matter in soil and hydrosphere ecosystems. It has a complex structure, has a variety of active functional groups, and can interact with many organic and inorganic substances. It is one of the important factors that affect the behavior and fate of pesticides in the soil environment. Natural humic acid widely exists in soil, river mud, marine sediments, lignite and weathered coal. Humic acid has a wide range of uses and has been used in various aspects such as industry, agriculture, medicine, and environmental protection. [0003] At pres...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 张彩年岳万华
Owner SINO AGRI SHUNTIAN ECOLOGICAL FERTILIZER CO LTD
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