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Compound fertilizer preparation method for improving utilization rate of phosphorus element

A compound fertilizer and utilization rate technology, applied in the agricultural field, can solve the problems of deteriorating crop quality, increasing the dosage, restricting plant absorption and utilization, etc., and achieve the effect of improving soil properties and increasing utilization rate

Inactive Publication Date: 2014-12-17
胡红辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] And because the utilization rate of phosphorus fertilizer in the current season is very low, the low conversion utilization rate of phosphorus fertilizer also restricts the absorption and utilization of other elements by plants, which is one of the reasons affecting the overall utilization rate of chemical fertilizers.
Only by simply increasing the amount of phosphate fertilizer to make up for the deficiency caused by the low utilization rate of phosphate fertilizer, more useful ions in the soil such as calcium, magnesium, iron, manganese, zinc, copper and other elements in the soil will be fixed by phosphate fertilizer. The loss of proper ion activity further exacerbates the imbalance of plant nutrients in the soil, reduces crop yield, and deteriorates crop quality
At the same time, due to the low utilization rate of chemical fertilizers, in order to achieve high yield per unit area, the amount has to be increased, resulting in environmental pollution and waste of resources

Method used

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  • Compound fertilizer preparation method for improving utilization rate of phosphorus element
  • Compound fertilizer preparation method for improving utilization rate of phosphorus element
  • Compound fertilizer preparation method for improving utilization rate of phosphorus element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Product specifications of compound fertilizer: according to mass percentage, N:P 2 O5: K 2 O=30:5:5, total nutrient ≥ 40%, organic matter ≥ 15%, moisture ≤ 1.0%. Nutrients refer to nitrogen, phosphorus, and potassium, and organic matter refers to potassium fulvate or ammonium humate.

[0029] Lift the urea, monoammonium phosphate, potassium chloride, potassium fulvic acid and filling agent into the silo at the top of the high tower with elevators respectively, and send the urea into the melting tank after metering, heat it to 130°C-170°C and pass through the overflow The flow is mixed and chelated with the metered monoammonium phosphate, potassium chloride, potassium fulvic acid and filler in the mixing tank, and then enters the granulator for spray granulation after being uniform, and after cooling and screening, the qualified The particles are surface treated, and then packaged for delivery.

[0030] Table 1. Amount of raw materials and auxiliary materials:

[003...

Embodiment 2

[0033] Product specifications of compound fertilizer: according to mass percentage, N:P 2 O5: K 2 O=20:4:16, total nutrient ≥ 40%, organic matter ≥ 19%, moisture ≤ 1.0%.

[0034] Lift the urea, monoammonium phosphate, potassium chloride, potassium fulvic acid and filling agent into the silo at the top of the high tower with elevators respectively, and send the urea into the melting tank after metering, heat it to 130°C-170°C and pass through the overflow The flow is mixed and chelated with the metered monoammonium phosphate, potassium chloride, potassium fulvic acid and filler in the mixing tank, and then enters the granulator for spray granulation after being uniform, and after cooling and screening, the qualified The particles are surface treated, and then packaged for delivery.

[0035] Table 2. Amount of raw materials and auxiliary materials:

[0036]

Embodiment 3

[0038] Product specifications of compound fertilizer: according to mass percentage, N:P 2 O5: K 2 O=26:0:9, total nutrients ≥ 35%, organic matter ≥ 20%, moisture ≤ 2.0%.

[0039] Lift the urea, monoammonium phosphate, potassium chloride, potassium fulvic acid and filling agent into the silo at the top of the high tower with elevators respectively, and send the urea into the melting tank after metering, heat it to 130°C-170°C and pass through the overflow The flow is mixed and chelated with the metered potassium chloride, potassium fulvic acid and filler in the mixing tank, and then enters the granulator for spray granulation after being uniform, and after cooling and screening, the qualified particles are surface treated , and then packaged for delivery.

[0040] Table 3. Amount of raw materials and auxiliary materials:

[0041]

[0042]

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Abstract

The invention relates to a compound fertilizer preparation method for improving the utilization rate of the phosphorus element. The method comprises the following steps: mixing molten urea or molten ammonium nitrate with a potash fertilizer and a filler to obtain a mixture; carrying out blending chelating on one or a mixture of more of potassium fulvate, ammonium humate and monoammonium phosphate and the mixture; defoaming the above blend-chelated product by a defoaming agent; sending the defoamed product to a high tower mixing tank, and carrying out high tower granulation; processing a composition comprising, by weight, 5 parts of guar gum, 3 parts of nonionic polyacrylamide and 2 parts of potassium polyacrylate to prepare a liquid with 10% of the composition, and uniformly sprinkling the surface of a granulated granular fertilizer with the liquid to wrap the fertilizer. The compound fertilizer adopting potassium fulvate or ammonium humate as an organic matter has the advantages of high content of nutrients, good dissolvability, low water content, reduction of the frequency of contact of phosphate radicals with metal ions, reduction of the curing probability of phosphorus, and improvement of the utilization rate of a phosphate fertilizer.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for preparing compound fertilizer for improving the utilization rate of phosphorus element. Background technique [0002] The use of a large amount of chemical fertilizers has caused serious land compaction, widespread crop diseases and insect pests, a decline in the utilization rate of chemical fertilizers, and serious agricultural non-point source pollution. At present, the combination of chemical fertilizers and organic fertilizers to produce organic-inorganic compound fertilizers has become a hot spot in the production of chemical fertilizers. [0003] The existing method for preparing organic-inorganic compound fertilizers is to use steam humidification method to agglomerate or spray granulate, and to dope organic matter in nitrogen, phosphorus, and potassium compound fertilizers. In the prior art, peat, peat, humic acid, Lignin, weathered coal, etc. are used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
Inventor 胡红辉
Owner 胡红辉
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