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Water-soluble fertilizer containing urea humate and preparation method thereof

A technology of humic acid urea and water-soluble humic acid, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems that cannot be used as water-soluble fertilizers, complex preparation process, unsatisfactory, etc., to promote sustainable development, preparation process Simple, low-cost effect

Active Publication Date: 2013-07-10
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the humic acid raw materials used are mainly non-water-soluble humic acids. Even if water-soluble humic acids are selected and non-water-soluble binders are added during the granulation process, they cannot be used as water-soluble fertilizers and cannot meet the needs of facility vegetable drip irrigation (micro-spraying). ) need for fertilization
In addition, the preparation process of the above two patent documents is relatively complicated, and it needs to be evaporated and concentrated, dried into granules

Method used

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  • Water-soluble fertilizer containing urea humate and preparation method thereof
  • Water-soluble fertilizer containing urea humate and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Embodiment 1: the water-soluble fertilizer containing humic acid urea, the raw material composition is as follows:

[0051] Sodium humate 6 parts, urea 18 parts,

[0052] 3 parts of monoammonium phosphate, 12 parts of potassium dihydrogen phosphate, 5 parts of diammonium phosphate,

[0053] 17 parts of potassium nitrate, 5 parts of potassium sulfate,

[0054] 5.9 parts of borax, 0.1 part of ammonium molybdate.

[0055] Preparation:

[0056] First put sodium humate and urea into the reaction kettle, control the temperature at 130°C, stir for 30 minutes to make it react to generate humic acid urea, and then mix uniformly monoammonium phosphate, potassium dihydrogen phosphate, diammonium phosphate, nitric acid Potassium, potassium sulfate, borax and ammonium molybdate are put into the reaction kettle, the temperature is controlled at 90°C, stirred for 14 minutes, released while hot, cooled and agglomerated, crushed into powder with a fineness of 80-100 mesh, and the tot...

Embodiment 2

[0057] Embodiment 2: As described in Embodiment 1, the difference is:

[0058] After the product in the reaction kettle in the last step of the preparation method is released while it is hot, it is poured into several rectangular containers with external dimensions of 5cm×10cm×15cm, cooled into a rectangular brick shape, and packaged to obtain a total nutrient ≥ 50% (N-P 2 o 5 -K 2 O, 16-14-20) Humic acid-containing urea water-soluble fertilizer. When using, put the whole piece of fertilizer into 30L water to dissolve, and it will be completely dissolved in about 2 hours, and then applied together with the irrigation water.

Embodiment 3

[0059] Embodiment 3: the water-soluble fertilizer containing humic acid urea, raw material composition is as follows:

[0060] Potassium humate 6 parts, urea 24 parts,

[0061] 10 parts of monoammonium phosphate, 5 parts of potassium dihydrogen phosphate, 10 parts of diammonium phosphate,

[0062] 20 parts of potassium nitrate, 10 parts of potassium sulfate,

[0063] 6.9 parts of borax, 0.1 part of ammonium molybdate.

[0064] Preparation:

[0065] First put potassium humate and urea into the reaction kettle, control the temperature at 125°C, stir to make it react to generate humic acid urea, stir for 35 minutes, then add monoammonium phosphate, potassium dihydrogen phosphate, phosphoric acid Diammonium, potassium nitrate, potassium sulfate, borax and ammonium molybdate are put into the reaction kettle, the temperature is controlled at 85°C, stirred for 15 minutes, released while hot, cooled and agglomerated, crushed into powder with a fineness of 80-100 mesh, and packaged ...

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Abstract

The invention relates to a water-soluble fertilizer containing urea humate and a preparation method thereof. The water-soluble fertilizer comprises the following components in parts by weight: 6-12 parts of water-soluble humic acid, 18-48 parts of urea, 20-25 parts of water-soluble phosphate fertilizer, 22-30 parts of water-soluble potash fertilizer and 6-10 parts of trace element fertilizer; andthe preparation method comprises the following steps: carrying out a reaction between the water-soluble humic acid and urea at 100-140 DEG C to generate urea humate; and adding the remaining raw materials, stirring for 10-15 minutes at 80-100 DEG C and discharging when the mixture is hot. The water-soluble fertilizer provided by the invention has a high nitrogen utilization rate, can be applied by flushing or drop irrigation or micro-spraying, is particularly suitable for protected vegetables, and can reduce the fertilizer dosage for protected vegetables.

Description

technical field [0001] The invention relates to a water-soluble fertilizer and a preparation method thereof, in particular to a water-soluble fertilizer containing humic acid urea and a preparation method thereof. Background technique [0002] Facility cultivation is one of the main forms of vegetable cultivation in my country. It is of great significance to meet the annual supply of vegetables, maintain the stability of the agricultural product market, increase farmers' income, promote the development of rural economy, narrow the gap between urban and rural areas, and ensure social harmony. As of 2003, the national protected vegetable cultivation area has reached 2.5 million hm 2 , an increase of 347 times compared to 1981. Fertilizer flushing with water is the most important form of top dressing for facility vegetables. In recent years, water-soluble fertilizers have gradually become the main fertilizer species for topdressing facility vegetables. Water-soluble fertiliz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 林海涛刘兆辉江丽华宋效宗石璟王梅沈玉文谭德水高新昊郑福丽徐钰
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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