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Tobacco-coated controlled-release fertilizer as well as preparation method and application thereof

A technology of coated controlled-release fertilizer and controlled-release fertilizer, applied in the application, fertilization device, fertilizer mixture and other directions, can solve the problems of restricting the quality of tobacco leaves and low potassium content, and achieve excellent nutrient resistance and control function, smooth and consistent surface, The effect of increasing potassium content in tobacco leaves

Inactive Publication Date: 2015-04-01
GUIZHOU TOBACCO SCI RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the world's high-quality tobacco leaves, China's tobacco leaves have a lower potassium content, with an average potassium content of less than 2%, which seriously restricts the improvement of tobacco leaf quality.

Method used

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  • Tobacco-coated controlled-release fertilizer as well as preparation method and application thereof
  • Tobacco-coated controlled-release fertilizer as well as preparation method and application thereof
  • Tobacco-coated controlled-release fertilizer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1, the preparation of tobacco-coated controlled-release fertilizer

[0057] 1. Preparation of coating solution

[0058] Measure solvent tetrachlorethylene (density 1.6kg L -1 , boiling point 121°C) 40L was added to the dissolving tank ( figure 1 shown in 5). Accurately weigh 400.0g of recycled polypropylene particles (purchased from waste recycling companies in the market), 100.0g of EVA, 200g of linear low-density polyethylene, and 400g of cornstarch (200-300 mesh) and add them together for dissolution and stirring. Heat and stir for 2 hours, add 500g of talc powder (1500 mesh) after the polymer is completely dissolved, heat up to 115°C and heat and stir evenly to obtain a uniformly dispersed dispersion system, that is, to obtain a coating liquid, which is used for coating operations.

[0059] 2. Preparation of tobacco-coated controlled-release fertilizer

[0060] The spouted bed is used to coat the tobacco granular fertilizer for topdressing (NK compoun...

Embodiment 2

[0082] Embodiment 2, the preparation of tobacco-coated controlled-release fertilizer

[0083] 1. Preparation of coating solution

[0084] Measure solvent tetrachlorethylene (density 1.6kg L -1 , boiling point 121°C) 60L was added to the dissolving tank ( figure 1 shown in 5). Accurately weigh 540.0 g of reclaimed polypropylene granules (purchased from waste recycling companies in the market) with a particle size of 3-4 mm, EVA210.0 g, 240 g of linear low-density polyethylene, and 450 g of wheat starch (200-300 mesh) into the dissolving irrigation After stirring and raising the temperature to 110°C, heat and stir at a constant temperature for 2 hours, add 600g of calcium carbonate (800 mesh) after the polymer is completely dissolved, heat up to 115°C and keep stirring evenly to obtain a uniformly dispersed dispersion system, that is, to obtain a coating liquid, which is used for coating Membrane operation.

[0085] 2. Preparation of tobacco-coated controlled-release fertilize...

Embodiment 3

[0095] Embodiment 3, the preparation of tobacco coated controlled-release fertilizer

[0096] 1. Preparation of coating solution

[0097] Measure solvent tetrachlorethylene (density 1.6kg L -1 , boiling point 121°C) 80L was added to the dissolving tank ( figure 1 shown in 5). Accurately weigh 880.0 g of reclaimed polypropylene granules (purchased from market waste recycling companies) with a particle size of 3-4 mm, EVA240.0 g, 360 g of linear low-density polyethylene, and 480 g of potato starch (200-300 mesh) After stirring and raising the temperature to 110°C, heat and stir at a constant temperature for 2 hours. After the polymer is completely dissolved, add 1000g (1500 mesh) of talc powder, heat up to 115°C and keep stirring evenly to obtain a uniformly dispersed dispersion system, that is, to obtain a coating liquid, which is used for coating Membrane operation.

[0098] 2. Preparation of tobacco-coated controlled-release fertilizer

[0099] Weigh large particle tobac...

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Abstract

The invention discloses a tobacco-coated controlled-release fertilizer as well as a preparation method and an application thereof. The tobacco-coated controlled-release fertilizer comprises tobacco fertilizer granules and an envelope wrapped on the surfaces of the tobacco fertilizer granules, wherein the envelope is prepared from the following substances in parts by weight: 24-30 parts of polypropylene, 6-11 parts of an ethylene-vinyl acetate copolymer, 11-18 parts of linear low-density polyethylene, 29-36 parts of inorganic mineral powder and 16-25 parts of starch. According to the tobacco-coated controlled-release fertilizer, K can be in an excellent S type nutrient dissolving-out mode, so that the release time and amount of the K can be controlled in an intelligent way, the high intensity demand on the K at the middle and later periods of tobacco growth can be met by one-time fertilization, the content of the K of upper leaves in tobaccos can be increased, and the quality of tobacco leaves can be improved.

Description

technical field [0001] The invention relates to a tobacco-coated controlled-release fertilizer, a preparation method and application thereof. Background technique [0002] my country's tobacco planting area and output both rank first in the world. Although smoking and health issues have attracted worldwide attention, tobacco, as one of the important economic crops, still plays a huge role in promoting my country's national economic development. [0003] Tobacco must absorb a certain amount of mineral elements in the process of growth and development. Only by supplying tobacco mineral nutrients in an appropriate amount and in a timely manner can the growth and development of tobacco plants be coordinated and meet the needs of tobacco leaf quality and yield formation, among which tobacco leaf quality is the most important. On the one hand, high quality is the goal pursued by tobacco production. Among many factors, fertilization is not only the first factor that determines the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 石俊雄曹兵张恒李鸿雁衣文平邹国元李志宏张云贵夏海乾孟琳
Owner GUIZHOU TOBACCO SCI RES INST
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