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Nitrogen fertilizer stabilizer composition and preparation method thereof

A technology of composition and stabilizer, which is applied in the field of nitrogen fertilizer stabilizer and its preparation, can solve the problems of reduced utilization of Nitrapyrin, loss of Nitrapyrin utilization, and different sensitivity of nitrogen oxidation inhibitors, so as to prolong the action time and improve nitrogen utilization rate , The effect of facilitating the release rate

Inactive Publication Date: 2013-04-17
南通联农佳田作物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So Nitrapyrin still has the following disadvantages as an additive product at present: 1. Nitrapyrin can be hydrolyzed into 6-chloropicolinic acid under the adsorption of soil colloids, which brings some losses to the utilization of Nitrapyrin; 2. Nitrapyrin is easy to photolyze, so it does not It is suitable for surface fertilization, and it needs to apply fertilizer deeply, which increases the labor intensity of users; 3. Different crops have different sensitivity to nitrogen oxide inhibitors. When the application amount of Nitrapyrin exceeds 1215mg / kg, tomato, oat, Seedlings such as carrots, onions, and lettuce are poisoned when they grow, so it is a product advantage to effectively control the release concentration of Nitrapyrin and reduce its side effects on seedlings during the growth period; Utilize lower
5. Visible Nitrapyrin liquid preparations need to be added with organic solvents to dissolve and form liquid emulsions, which wastes petroleum resources and produces solvents that are toxic and harmful to the environment and organisms

Method used

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  • Nitrogen fertilizer stabilizer composition and preparation method thereof
  • Nitrogen fertilizer stabilizer composition and preparation method thereof
  • Nitrogen fertilizer stabilizer composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]

[0044] 1g of Nitrapyrin was heated past the melting point and melted into a liquid state, then 0.1g of styrene was added and stirred evenly to become the active ingredient mother liquor; 0.5g of emulsifier Tween-60 and aqueous solution were added to 50g of deionized water and stirred evenly to form an aqueous solution; Put the prepared mother liquor into the aqueous solution and turn on the high-speed homogenization to form a stable O / W emulsion; turn on the stirring (maintain 300 rpm), and then raise the temperature of the homogenized emulsion to 30°C to maintain the solidification of the stable capsule wall material After 5 hours of temperature, add 3g of NNO naphthalene sulfonate and 20g of magnesium aluminum silicate (2%) aqueous solution, add water to 100g and stir evenly to prepare 1% Nitrapyrin microcapsule sustained release agent.

Embodiment 2

[0046]

[0047] Heat 10g of Nitrapyrin over the melting point and melt into a liquid state, then add 2g of styrene monomer and stir evenly to the active ingredient mother liquor; add 2.0g of emulsifier fatty alcohol polyoxyethylene ether AEO-15 (Xingtai Bluestar) into 50g of Stir in deionized water to form an aqueous solution; put the prepared mother liquor into the aqueous solution and turn on high-speed homogenization to form a stable O / W emulsion; turn on stirring (maintain 450 rpm), and then raise the temperature of the homogenized emulsion to 70°C, maintain a stable solidification temperature of the capsule wall material for 7 hours, then add 4.0g of dispersant phosphate esters 601P, 15g of xanthan gum (2%) aqueous solution, add water to 100g and stir evenly to prepare 10% Nitrapyrin microcapsules slow release agent.

Embodiment 3

[0049]

[0050]

[0051] Heat 24g of Nitrapyrin over the melting point and melt into a liquid state, then add 6g of styrene and 2g of acrylate to stir evenly the active ingredient mother liquor; add 2.0g of emulsifier fatty alcohol polyoxyethylene ether AEO-9 (Nanjing Taihua) Add 40g of deionized water and stir to form an aqueous solution; put the prepared mother liquor into the aqueous solution and turn on high-speed homogenization to form a stable O / W emulsion; turn on stirring (maintain 400 rpm), and then put the homogenized The temperature of the emulsion is raised to 50°C, and the solidification temperature of the capsule wall material is maintained for 5 hours, then 5.0g of sodium lignosulfonate and 10g of xanthan gum (2%) aqueous solution are added as a dispersant, and the water is replenished to 100g and stirred evenly to obtain 24% Nitrapyrin microcapsule sustained release formulation.

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Abstract

The invention discloses a nitrogen fertilizer stabilizer composition. The nitrogen fertilizer stabilizer composition comprises the following components in part by weight: 1-60 parts of nitrapyrin, 1-15 parts of wall material, 2-10 parts of emulsifier, 0.05-0.3 parts of viscosity regulator, 2-10 parts of dispersing agent and 0.1-100 parts of water. The invention further provides a preparation method of the nitrogen fertilizer stabilizer composition. The preparation method of the nitrogen fertilizer stabilizer composition comprises the following steps of: heating and melting active components, adding the macromolecular wall material, and stirring uniformly; adding a mother liquid containing the active components and the wall material into an emulsifier-containing water solution under a shearing condition, and emulsifying into an oil-in-water state; and controlling grain size as required, wherein the nitrogen fertilizer stabilizer composition can be in a liquid or solid state; and liquid drops containing the active components react with water molecules to form the macromolecular wall material. Through addition of a nitrapyrin product, the nitrogen fertilizer stabilizer composition can improve the using efficiency of an ordinary nitrogen fertilizer by decreasing nitrogen leaching and denitrification, is good in compatibility with a variety of fertilizers, pesticides, weedicides and bactericides, and can be mixed therewith for application.

Description

technical field [0001] The invention relates to the processing field of fertilizer synergists, in particular to a nitrogen fertilizer stabilizer and a preparation method thereof. Background technique [0002] The fertilizer nitrogen stabilizer in the present invention refers to 2-chloro-6-trichloromethylpyridine (Nitrapyrin), which is a nitrogen oxidation inhibitor for nitrogen fertilizer. Physical and chemical properties: Molecular formula: [0003] [0004] This product is white crystalline solid, melting point: 62-63°C, vapor pressure at 23°C is 370mpt, insoluble in water, solubility in water at 22°C is 40mg / kg water. Soluble in acetone, dichloromethane, xylene. Toxicity: acute oral LD50 for rats: 1072-1231mg / kg. Application: Due to its selective activity on nitrogen-fixing bacteria, it can be used as a nitrogen oxidation inhibitor and soil nitrogen fertilizer protectant; when applied together with urea and nitrogen fertilizer, it can delay the oxidation of ammonium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 曹雄飞仲苏林陈小波吴建兰章东生
Owner 南通联农佳田作物科技有限公司
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