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Preparation method of anti-aging, long-acting and multifunctional phosphate fertilizer

A multi-functional, anti-aging technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve problems such as waste of resources, waste of manpower and time, soil pollution, etc., and achieve high utilization rate, promote root development, and comprehensive nutrition effects

Active Publication Date: 2012-07-18
AVIC FERTILIZER
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  • Application Information

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Problems solved by technology

However, most of the fertilizers with large elements and medium and trace elements are applied separately, which causes a waste of manpower and time.
[0004] Water-soluble chemical fertilizers (ammonium phosphate, calcium superphosphate) will infiltrate the soil and cause pollution to the soil. At the same time, the amount absorbed and utilized by fertilized crops only accounts for about 15% of the total amount, which is a serious waste of resources.

Method used

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  • Preparation method of anti-aging, long-acting and multifunctional phosphate fertilizer
  • Preparation method of anti-aging, long-acting and multifunctional phosphate fertilizer

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preparation example Construction

[0020] The invention provides a method for preparing an anti-aging long-acting multifunctional phosphate fertilizer. In the method, calcium (Ga), magnesium (Mg), iron (Fe), manganese (Mn), copper (Gu), zinc (Zn ), molybdenum (Mo), boron (B) and other trace elements, one or more of the oxides and salts corresponding to the above-mentioned trace elements are added to phosphoric acid, and ammonia gas is passed through to generate Trace element citrate soluble phosphate fertilizer, so as to reduce the fixation of phosphate fertilizer in the soil and improve the utilization rate of phosphate fertilizer.

[0021] see figure 1 , figure 1 It is a flowchart of the preparation method of the anti-aging long-acting multifunctional phosphate fertilizer of the present invention, and the preparation method includes: step S1, mixing the mixture containing the medium and trace elements required by the crops with the phosphoric acid solution to form a standby solution; step S2, in the standby ...

Embodiment 1

[0048] First take by weighing 1 kilogram (Kg) of elemental zinc, 1 kilogram of elemental magnesium, and 1 kilogram of elemental iron to form a powdery medium and trace element mixture, weigh 20 kilograms of phosphoric acid with a mass fraction of 40%, and add the medium and trace element mixture to the phosphoric acid , stirred for 10 minutes to dissolve the mixture completely, generating soluble magnesium dihydrogen phosphate (MgH 2 PO 4 ), zinc dihydrogen phosphate (ZnH 2 PO 4 ), ferrous dihydrogen phosphate (FeH 2 PO 4 ) of phosphate solution.

[0049] Then, ammonia gas is passed into the generated phosphate solution, and the stirring is continued to gradually generate magnesium ammonium phosphate (MgNH 4 PO 4 ), zinc ammonium phosphate (ZnNH 4 PO 4 ), ferrous ammonium phosphate (FeNH 4 PO 4 ), diammonium phosphate ((NH 4 ) 2 HPO 4 ) slurry mixture, which is the main component of citrate-soluble phosphate fertilizer. Then it is dried, cooled and crushed to 20-...

Embodiment 2

[0057] First weigh 1 kg of calcium oxide and 0.2 kg of manganese oxide to form a powdery mixture of medium and trace elements, weigh 10 kilograms of phosphoric acid with a mass fraction of 50%, add the mixture of medium and trace elements to phosphoric acid, and stir for 10 minutes to make the mixture completely dissolved to generate soluble calcium dihydrogen phosphate (CaH 2 PO 4 ), manganese dihydrogen phosphate (MnH 2 PO 4 ) of phosphate solution.

[0058] Then add ammonia water to the cooled phosphate solution, stir continuously, and gradually generate calcium ammonium phosphate (CaNH 4 PO 4 ), manganese ammonium phosphate (MnNH 4 PO 4 ), diammonium phosphate ((NH 4 ) 2 HPO 4 ) slurry mixture, which is the main component of citrate-soluble phosphate fertilizer.

[0059] Then add 10 kg of diammonium phosphate (containing N18%, containing P 2 o 5 46%), stirred and mixed evenly, after aging for 30 minutes, dried, cooled and pulverized to 20 mesh particles to obta...

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Abstract

The invention provides a preparation method of an anti-aging, long-acting and multifunctional phosphate fertilizer. The method comprises the following steps of: (S1) mixing a mixture, which includes one or more of medium trace elements desired in the crop, with a phosphate solution so as to form a spare solution; and (S2) adding ammonia to the spare solution so as to generate ammonium phosphate double salt. The phosphate fertilizer prepared by using the preparation method of the anti-aging, long-acting and multifunctional phosphate fertilizer, which is provided by the invention, has the advantages of uneasiness for fixing the phosphate, long fertilizer action, aging resistance, multiple medium trace elements, comprehensive nutrients, speed lowering interdependence and convenience in use; the crop root development can be promoted; and the crop photosynthetic capacity can be improved.

Description

technical field [0001] The invention relates to a preparation method of phosphate fertilizer, in particular to a preparation method of anti-aging, long-acting and multifunctional phosphate fertilizer. Background technique [0002] In various agricultural production activities, people use a lot of chemical fertilizers in pursuit of crop yields. According to the survey, the current average annual application of pure nitrogen in my country is 200kg / ha. In economically developed areas such as the Taihu Lake Basin, the annual amount of pure nitrogen applied is more than 600kg / ha, and in many areas the amount of pure nitrogen used is even as high as 1300kg / ha. [0003] However, the seasonal utilization rate of phosphate fertilizer in my country is generally low at present, only 10%-25%, and the phosphorus applied to the soil is easily converted into adsorbed and mineral phosphorus. The adsorption and desorption of phosphorus by the soil is in a state of balance. When the phospho...

Claims

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Application Information

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IPC IPC(8): C05G1/00
Inventor 郭长青马杰文朱佳颖廖照源
Owner AVIC FERTILIZER
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