Dedicated slow-release potash fertilizer for tobacco and preparation method

A technology for slow-release potassium fertilizer and tobacco, applied in the field of special fertilizer for tobacco and its preparation

Inactive Publication Date: 2013-02-27
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems that the present agricultural slow-release potassium fertilizer has high price and complicated preparation process, the purpose of this invention is to provide a kind of effective, low cost and simple production process , tobacco-specific slow-release potassium fertilizer and preparation method that are easy to popularize and use in large areas

Method used

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  • Dedicated slow-release potash fertilizer for tobacco and preparation method
  • Dedicated slow-release potash fertilizer for tobacco and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Weigh 50 g of polyvinyl alcohol and add 1000 ml of distilled water, heat it in a water bath to 90 °C and stir for about 25 minutes. After the polyvinyl alcohol is completely dissolved, pour the solution into a watering can for later use;

[0031] (2) Weigh 30 g of chitosan and dissolve it in 1000 ml of 2% acetic acid solution at 55 °C;

[0032] (3) Weigh 450 g of molecular sieve powder, 200 g of polyvinyl alcohol and 1050 g of montmorillonite powder into a high-speed mixer, heat up to 60 °C and stir for about 30 min at a speed of 2000 r / min;

[0033] (4) Start the rotary granulator, put 2000 g of potassium sulfate granules in it and spray the solution (1) until it is fully soaked, sprinkle (3) to make it evenly disperse on the surface of the potassium sulfate granules; then spray the solution (1) to Infiltrate the coating layer, then continue to add (3), rotate for about 4 minutes, repeat this process 5 times;

[0034] (5) Spray the solution (2) on the surface of t...

Embodiment 2

[0038] (1) Weigh 60 g of sodium carboxymethyl cellulose and add 1000 ml of distilled water, heat it in a water bath to 60 °C and stir for about 30 minutes. After the sodium carboxymethyl cellulose is completely dissolved, pour the solution into a watering can for later use;

[0039] (2) Weigh 45 g of liquid paraffin and pour it into a watering can for later use;

[0040] (3) Weigh 800 g of diatomite powder, 150 g of chitosan powder and 1000 g of montmorillonite powder into a high-speed mixer, and stir for 25 min at a temperature of 45 °C and a speed of 1000 r / min;

[0041] (4) Start the rotary granulator, place 2500 kg of potassium sulfate granules in it and spray solution (1) until the surface is fully infiltrated, sprinkle (3) to evenly disperse on the surface of potassium sulfate granules. Spray solution (1) again to infiltrate the coating layer, then continue to add (3) and rotate for about 5 min. Repeat this process 7 times.

[0042] (5) Spray the solution (2) on the su...

Embodiment 3

[0046] (1) Weigh 40 g of sodium carboxymethylcellulose and add 1600 ml of distilled water, heat in a water bath to 60 °C and stir for 30 minutes. After the sodium carboxymethylcellulose is completely dissolved, pour the solution into a watering can for later use;

[0047] (2) Weigh 80 g of liquid paraffin and pour it into a watering can for later use;

[0048] (3) Weigh 200 g molecular sieve powder, 100 g polyvinyl alcohol, 50 g chitosan and 1000 g diatomaceous earth powder respectively and pour them into a high-speed mixer. Stir for about 25 minutes;

[0049] (4) Start the rotary granulator, place 2300 g potassium sulfate particles in it and spray solution (1) until the surface is fully infiltrated, sprinkle (3) to evenly disperse on the surface of potassium sulfate particles. Spray solution (1) again to infiltrate the coating layer, then continue to add (3) and rotate for about 5 min. Repeat this process 8 times.

[0050] (5) Spray the solution (2) on the surface of the w...

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Abstract

The invention discloses a dedicated slow-release potash fertilizer for tobacco and a preparation method. The conventional potash fertilizer as a slow-release fertilizer center is wrapped by the compound of inorganic membrane material and organic materials as coating material to form micro-capsules, the product becomes grain after being dried, and the grain size is 3mm to 5mm; the weight of the coating material accounts for 30 to 50 percent of the total weight of the fertilizer; the weight of the inorganic membrane material accounts for 80 to 90 percent of the weight of the coating material, and the weight of the organic materials (including organic membrane material, binder and sealing agent) accounts for 10 to 20 percent of the weight of the coating material; the inorganic membrane material and the organic membrane material are first mixed at high speed, the conventional potash fertilizer and the mixture are then sequentially added into a rotary pelleting machine, pelleted and coated, meanwhile, the corresponding binding solution is sprayed in good time, and finally, the sealing agent is sprayed. Under the condition of little applied dose, the dedicated slow-release potash fertilizer for tobacco can increase the content of potassium element in the upper and the middle leaves of flue-cured tobacco by more than 30 percent; and meanwhile, in comparison with other slow-release potash fertilizers, the dedicated slow-release potash fertilizer for tobacco greatly simplifies the production process, and reduces the production cost.

Description

technical field [0001] The invention relates to the technical field of tobacco-specific fertilizer and its preparation, in particular to a tobacco-specific slow-release potassium fertilizer with low cost, simple preparation and remarkable effect and a preparation method. Background technique [0002] At present, the utilization rate of fertilizers in tobacco planting in my country is generally low, nitrogen (N) is about 30-35%, phosphorus (P) is about 10-20%, potassium (K) is about 35-50%, and a large amount of fertilizer input is not used. The use or loss of tobacco grown in the current season has caused serious waste of resources and environmental pollution on the one hand; on the other hand, due to the serious eutrophication of water bodies, it can cause soil compaction and decline in physical and chemical properties. Improving the rate of fertilizer use and reducing the side effects of fertilizers is of great significance to stabilizing tobacco production, improving the q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 刘文涛何素芹朱诚身魏佳孙洪魁李永涛孔德辉吴鸣建韦凤杰苏永丽司嫄嫄李洋
Owner ZHENGZHOU UNIV
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