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A kind of corn multifunctional soil improvement nutrient controlled release fertilizer and preparation method thereof

A soil improvement and controlled-release fertilizer technology, which is applied to fertilizer mixtures, fertilization devices, and agricultural gas emission reduction, can solve problems such as unreasonable nutrient composition, slowed soil water infiltration rate, and unreasonable nutrient distribution ratio. Achieve the effects of increasing grain production and farmers' income, slowing down the rate of nutrient release, and improving nutrient utilization efficiency

Inactive Publication Date: 2018-08-31
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Unreasonable combination of nutrients and unreasonable ratio of nutrients will cause nutritional imbalance in corn growth. Nitrogen fertilizer applied to the soil will be released quickly and easily cause losses
[0004] 2. The content of soil organic matter is reduced, and the soil structure is destroyed, resulting in a slowdown of the infiltration rate of soil moisture, and runoff is easy to occur on slopes, causing non-point source pollution of farmland
[0005] 3. The amount of corn stalks is low, especially for the northeast region, where the temperature is low and it is difficult to return the straw to the field

Method used

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  • A kind of corn multifunctional soil improvement nutrient controlled release fertilizer and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Prepare materials according to the following types and amounts:

[0040] Weigh 31.6kg of urea, 30.4kg of diammonium phosphate, 20kg of potassium sulfate, 1kg of zinc sulfate, 0.12kg of thiophosphoric acid triamide, 0.08kg of dicyandiamide, 10kg of biomass charcoal, 6.5kg of attapulgite, polyacrylamide polymer Polymer 0.3kg.

[0041] 2. The urea, diammonium phosphate, potassium sulfate, zinc sulfate, triamide thiophosphate, dicyandiamide, biomass charcoal, and attapulgite weighed in step 1 are uniformly mixed according to the above ratio to obtain a mixture;

[0042] 3. The mixture obtained in step 2 is sent to a disc granulator, and the aqueous solution of polyacrylamide polymer is sprayed at a rate of 1 liter / min for granulation. In the aqueous solution of polyacrylamide polymer, polypropylene The mass ratio of amide polymer to water is 1:300. The obtained granular fertilizer is dried at 70°C for 30 minutes, cooled with natural ventilation for 1 hour to room temperature, ...

Embodiment 2

[0044] 1. Prepare materials according to the following types and amounts:

[0045] Weigh 42kg of urea, 25kg of diammonium phosphate, 16kg of potassium sulfate, 1kg of zinc sulfate, 0.18kg of thiophosphoric acid triamide, 0.12kg of dicyandiamide, 12kg of biomass charcoal, 3.2kg of bentonite, and 0.5kg of polyacrylamide polymer .

[0046] 2. The urea, diammonium phosphate, potassium sulfate, zinc sulfate, triamide thiophosphate, dicyandiamide, biomass charcoal, and bentonite weighed in step 1 are mixed uniformly according to the above ratio to obtain a mixture;

[0047] 3. The mixture obtained in step 2 is fed into a disc granulator, and the aqueous solution of polyacrylamide high molecular polymer is sprayed at a rate of 5 liters / minute to granulate. The mass ratio of polymer to water is 1:500. The obtained granular fertilizer is dried at 70°C for 30 minutes, cooled with natural ventilation for 2 hours to room temperature, and the fertilizer granules that have passed the 6-mesh sieve...

Embodiment 3

[0049] 1. Prepare materials according to the following types and amounts:

[0050] Weigh 39kg of urea, 28kg of diammonium phosphate, 18kg of potassium sulfate, 1kg of zinc sulfate, 0.18kg of thiophosphoric acid triamide, 0.12kg of dicyandiamide, 9kg of biomass charcoal, 4.3kg of a mixture of attapulgite and bentonite (including attapulgite) The mass ratio of clay to bentonite is 3:5), and 0.4 kg of polyacrylamide polymer.

[0051] 2. The mixture of urea, diammonium phosphate, potassium sulfate, zinc sulfate, thiophosphoric acid triamide, dicyandiamide, biomass charcoal, attapulgite and bentonite weighed in step 1 is uniformly mixed according to the above ratio to obtain a mixture;

[0052] 3. The mixture obtained in step 2 is sent to a disc granulator, and the aqueous solution of polyacrylamide high molecular polymer is sprayed at a rate of 3 liters / minute to granulate. The mass ratio of polymer to water is 1:400. The obtained granular fertilizer is dried at 70°C for 30 minutes, coo...

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Abstract

The invention relates to a corn multifunctional soil-improving and nutrient-control-released fertilizer, which comprises a biocarbon soil improving material and a chemical fertilizer according to a weight ratio of (13%-17%):(83%-87%). The fertilizer is prepared by combining the biocarbon soil improving material and the chemical fertilizer together according to the weight ratio mentioned above, thus the nutrients in chemical fertilizer can be fully utilized, at the same time, the soil can be improved, and the nutrients can be control-released. Moreover, the fertilizer can prominently increase the content of organic carbon in soil, improve the soil property, and reduce the releasing speed of nutrients, thus the happening rate of farmland pollution is reduced, the nutrient utilization rate is improved, the crop output and the income of farmers are increased, and the effect on corns is the most prominent.

Description

Technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a corn multifunctional soil improvement nutrient controlled release fertilizer and a preparation method thereof. Background technique [0002] Maize in my country is mainly grown in hills and plains. In the process of planting, farmhouse manure and chemical fertilizer are mainly selected as fertilizers. The existing fertilizers mainly have the following defects: [0003] 1. The composition of nutrients is unreasonable and the nutrient distribution ratio is unreasonable, resulting in an imbalance in the growth of corn. The nitrogen fertilizer is released into the soil at a fast rate, which is easy to cause losses. [0004] 2. The content of soil organic matter is reduced and the soil structure is destroyed, causing the infiltration rate of soil water to slow down, and slope land is prone to runoff, causing non-point source pollution of farmland. [0005] 3. The amount of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/08C05G3/80C05G3/90
CPCY02P60/21Y02A40/22
Inventor 吴会军杨世琦韩瑞芸杨正礼
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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