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Corn multifunctional soil-improving and nutrient-control-released 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: 2016-01-13
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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  • Corn multifunctional soil-improving and nutrient-control-released fertilizer and preparation method thereof

Examples

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 triamide thiophosphate, 0.08kg of dicyandiamide, 10kg of biochar, 6.5kg of attapulgite, polyacrylamide polymer Polymer 0.3 kg.

[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. Send the mixture obtained in step 2 into a disc granulator, and spray the polyacrylamide high molecular polymer aqueous solution at a rate of 1 liter / minute for granulation. In the polyacrylamide high molecular polymer aqueous solution, 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 by natural ventilation for 1 hour to room te...

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 triamide, 0.12kg of dicyandiamide, 12kg of biochar, 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 were mixed uniformly according to the above ratio to obtain a mixture;

[0047] 3. Send the mixture obtained in step 2 into a disc granulator, and spray the polyacrylamide high molecular polymer aqueous solution at a rate of 5 liters / minute for granulation, and the high molecular polymer in the high molecular polymer aqueous solution The mass ratio of polymer to water is 1:500, and the obtained granular fertilizer is dried at 70°C for 30 minutes, cooled by natural ventilation for 2 hours to room tempera...

Embodiment 3

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

[0050] Take by weighing urea 39kg, diammonium phosphate 28kg, potassium sulfate 18kg, zinc sulfate 1kg, thiophosphoric acid triamide 0.18kg, dicyandiamide 0.12kg, the mixture 4.3kg of biochar 9kg, attapulgite and bentonite (wherein attapulgite The mass ratio of soil and bentonite is 3:5), polyacrylamide polymer 0.4kg.

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

[0052] 3. Send the mixture obtained in step 2 into a disc granulator, spray the polyacrylamide high molecular polymer aqueous solution at a rate of 3 liters / minute for granulation, and the high molecular polymer in the high molecular polymer aqueous solution The mass ratio of polymer to water is 1:400. The obtained granular fertiliz...

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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, in particular to a corn multifunctional soil improvement nutrient controlled release fertilizer and a preparation method thereof. Background technique [0002] my country's corn is mainly planted in hills, plains and other areas. In the process of planting, farmyard manure and chemical fertilizers are mainly used as fertilizers. Existing fertilizer mainly has the following defects: [0003] 1. Unreasonable nutrient composition and nutrient distribution ratio will cause nutritional imbalance in corn growth, and nitrogen fertilizer will be released quickly into the soil, which will 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 water, and runoff is easy to occur on slopes, causing non-point source pollution of farmland. [0005] 3. The amount of corn stalks is low, e...

Claims

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Application Information

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Patent Type & Authority Applications(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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