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Modified phosphorus-containing liquid fertilizer and preparation method thereof

A liquid and modified technology, applied in the direction of alkaline orthophosphate fertilizer, phosphate fertilizer, ammonium orthophosphate fertilizer, etc., can solve the problems of destroying the soil structure and being unable to be absorbed by crops, so as to reduce environmental pollution, facilitate absorption and utilization, The effect of improving the chelating ability

Inactive Publication Date: 2019-02-12
QINGDAO SOBEL CROP NUTRITION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a modified phosphorus-containing liquid fertilizer and its preparation method, which solves the problem that phosphorus-containing fertilizers in the prior art tend to form insoluble phosphorus, which makes it unable to be absorbed by crops and destroys the soil structure.

Method used

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  • Modified phosphorus-containing liquid fertilizer and preparation method thereof
  • Modified phosphorus-containing liquid fertilizer and preparation method thereof

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preparation example Construction

[0027] A kind of preparation method of modified phosphorus-containing liquid fertilizer of the present invention, comprises the following steps:

[0028] 1) Take humate, add phosphorylation reagent and water, adjust the pH value to 1.0-6.0, raise the temperature to 150-200°C, and react for 2-5h at 0.7-1.0MPa, and carry out homogenization treatment at the same time to make the granules The diameter D90 is not more than 10 μm, and the primary product is obtained;

[0029] 2) adjusting the pH value of the initial product obtained in step 1) to 9-11, filtering to obtain a filtrate, adjusting the pH value of the filtrate to 2.0-6.0 to obtain a clear liquid;

[0030] 3) Add medium element fertilizer, trace element fertilizer and surfactant to the clear liquid obtained in step 2), raise the temperature to 50-80°C, and perform homogeneous reaction at 0.7-1.0MPa, react for 0.5-2h, adjust The pH value is 5.0-8.0 to obtain a chelate solution;

[0031] 4) Add a large amount of elemental...

Embodiment 1

[0035] A kind of preparation method of modified phosphorus-containing liquid fertilizer of the present invention, comprises the following steps:

[0036] 1) Weigh raw materials according to the following parts by weight: potassium humate 100Kg, polyphosphoric acid 40Kg, potassium hydroxide 30Kg, triethanolamine 30Kg, manganese sulfate monohydrate 5Kg, zinc sulfate monohydrate 5Kg, magnesium nitrate hexahydrate 10Kg, boric acid 5Kg, urea 80Kg, potassium pyrophosphate 50Kg, ammonium dihydrogen phosphate 50Kg, ammonium polyphosphate 120Kg, citric acid 20Kg, calcium lignosulfonate 10Kg, carbon 13 isomeric alkanol 10Kg, deionized water to make up to 1000L;

[0037] 2) Take potassium humate, add polyphosphoric acid and deionized water, adjust the pH value to 1.0, heat up to 150°C, and react for 2 hours at 1.0MPa, and perform homogenization treatment at the same time, so that the particle size D90 does not exceed 10μm, and obtain primary product;

[0038] 3) Using potassium hydroxid...

Embodiment 2

[0042] A kind of preparation method of modified phosphorus-containing liquid fertilizer of the present invention, comprises the following steps:

[0043] 1) Take the raw materials according to the following parts by weight: 150Kg of brown rot potassium, 60Kg of pyrophosphate, 45Kg of potassium hydroxide, 20Kg of citric acid, 30Kg of triethanolamine, 8Kg of manganese sulfate monohydrate, 8Kg of zinc sulfate monohydrate, 15Kg of magnesium nitrate hexahydrate , boric acid 8Kg, urea 50Kg, ammonium dihydrogen phosphate 50Kg, ammonium polyphosphate 100Kg, calcium lignosulfonate 10Kg, carbon 13 isomeric alkanol 30Kg, deionized water to make up to 1000L;

[0044] 2) Take brown rot potassium, add pyrophosphoric acid and deionized water, adjust the pH value to 6.0, raise the temperature to 200°C, and react for 5 hours at 0.7MPa, and perform homogenization treatment at the same time, so that the particle size D90 does not exceed 10μm, get the first product;

[0045] 3) Using potassium h...

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Abstract

The invention discloses a modified phosphorus-containing liquid fertilizer and a preparation method thereof. The modified phosphorus-containing liquid fertilizer is prepared from the following raw materials in parts by weight: 2-60 parts of a phosphorylation reagent, 10-300 parts of humic acid salt, 100-700 parts of a macroelement fertilizer body, 0-100 parts of a medium element fertilizer body, 0-30 parts of a microelement fertilizer body, 1-50 parts of a surfactant and 300-800 parts of water. The invention further provides the preparation method for the modified phosphorus-containing liquidfertilizer. According to the modified phosphorus-containing liquid fertilizer and the preparation method thereof, a molecular chain of the humic acid salt is cut under the action of the phosphorylation reagent, in addition, graft modification is achieved, and therefore the variety and the number of functional groups are enriched, the chelating ability is improved, when the humic acid salt is mixedwith macroelements, medium elements and microelements, the multiple effects of activating, converting, moving and the like on the phosphate fertilizer are achieved, high-valence metal cations in soilcan also be adsorbed and complexed, sufficient absorption and utilization of crops are facilitated, the formation of an insoluble phosphate fertilizer is avoided, the environment pollution is reduced, and the damage to the soil structure is reduced.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, in particular to a modified phosphorus-containing liquid fertilizer and a preparation method thereof. Background technique [0002] my country is a large agricultural country with a large population. In order to increase food production, one of the effective means is to use fertilization. At present, fertilization in the world is mainly based on chemical fertilizers and organic fertilizers. The output of organic fertilizers is limited, and its application is greatly restricted. Moreover, its fertilizer effect is not obvious; the long-term excessive or unreasonable application of chemical fertilizers leads to the loss of nutrients in the soil. Imbalanced proportions cause soil compaction, reducing the utilization rate of fertilizers and the quality of agricultural products. Moreover, the production and application of chemical fertilizers can also cause air and water pollution, causing great da...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B7/00C05G3/00C05G3/80C05B17/00C05C5/00C05C9/00C05D1/00C05D9/02C05F11/02
Inventor 赵建亮曹培顺赵新巍
Owner QINGDAO SOBEL CROP NUTRITION