Long-acting humic acid phosphate fertilizer and process for preparing same

A humic acid phosphate fertilizer, humic acid technology, applied in organic fertilizers, fertilization devices, fertilizer mixtures and other directions, can solve the problems of unstable application effect, backward technology, incomplete economy, etc. Simple, overcomes the effect of being easily fixed by the soil

Inactive Publication Date: 2003-08-06
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of simple mechanical mixing of simple and compound fertilizers is still in an extensive state, the technology is backward, the application effect is not stable enough, and the economy has not completely passed the test.
The process of preparing organic compound phosphate fertilizer by the chemical reaction of HA and phosphate fertilizer has not been reported so far

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 20g of weathered coal, mix with 3ml of mixed solution of 5% ammonia water and 2% ammonium bicarbonate aqueous solution, 0.2g of ferrous sulfate, 180g of superphosphate, and 400ml of water, mix well, react at 50°C for 5 hours, concentrate and dry, and make long Efficient humic acid phosphate fertilizer products. Its active ingredients (percentage by weight) are 4.5% water, 67.8% ash, 7% humic acid and 20.7% available phosphorus.

Embodiment 2

[0027] Get peat 50g, mix with sodium hydroxide and ferric hydroxide (weight ratio 1:1) 5g, ferrous sulfate, aluminum sulfate, the mixture of zinc sulfate (weight ratio 1:1:2) 0.3g, phosphorus monoamine 50g , 200ml of water, mix well, react at 100°C for 2 hours, concentrate and dry, and make long-acting humic acid phosphate fertilizer products. Its active ingredients (percentage by weight) are 3.5% water, 34.7% ash, 36.3% humic acid and 25.5% available phosphorus.

Embodiment 3

[0029] Take lignite 70g, mix with sodium hydroxide and potassium hydroxide (weight ratio 1:1) 7g, manganese sulfate 2g, phosphorus diamine 30g, water 400ml, mix well, react at 80°C for 2 hours, concentrate and dry, and prepare Growth effect humic acid phosphate fertilizer products. Its active ingredients (percentage by weight) are 3.2% water, 36.8% ash, 42.4% humic acid and 17.6% available phosphorus.

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PUM

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Abstract

The present invention provides a long-acting humic phosphate fertilizer and its preparation method. Said invention adopts the cheap coal humic acid and general quick-acting phosphate fertilizer and markes them produce chemical reaction under the action of accelerator and complexing agent to prepare the invented long-acting phosphate fertilizer. Said invention adopts an unique chemical reaction tomake the HA-P compound formed by said chemical reaction can effectively inhibit the fixation of fast-effective phosphorus and can reduce said fixation by above 16%, under the condition of identificalfertilizer application or reducing said fertilizer application as compared with general phosphate fertilizer said HA-P can raise yield by about 10%, and the utilization rate of P can be raised by 10 percentage points.

Description

Technical field: [0001] The invention belongs to slow-release fertilizers, in particular to a preparation method of long-acting humic acid phosphate fertilizer. Background technique: [0002] Phosphorus (P) is one of the three elements necessary for the growth and development of crops. The rational application of P fertilizer has become an important factor to ensure crop yield and improve agricultural production efficiency. However, due to the fixation of phosphorus in the soil, the utilization rate of phosphorus fertilizer by crops is extremely low. After the available (water-soluble) phosphorus is applied to the soil, most of it will be converted into ineffective phosphorus within seven days. In addition, some phosphorus will dissolve in the water body, resulting in eutrophication of the water body. deteriorating the living environment of humans and organisms. Therefore, reducing the fixation and loss of phosphorus and improving the utilization rate and fertilizer efficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F11/02C05G1/00
Inventor 武丽萍郎春梅成绍鑫
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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