Seed-friendly corn-specific controlled-release fertilizer

A corn-specific and friendly technology, applied in application, fertilization devices, fertilizer mixtures, etc., can solve the problems of controlled release performance of fertilizers and violent fluctuations in nutrient release, and achieve the effect of good appearance, perfect combination, and not easy to break

Active Publication Date: 2010-09-08
KINGENTA ECOLOGICAL ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese invention patent CN 100567222C discloses a production method of recycled thermoplastic resin and thermosetting resin multi-layer composite coated controlled-release fertilizer, which realizes the perfect combination of toughness and elasticity of the coated material, and solves the problem of controlled-release performance and nutrient release of fertilizers. The problem of violent fluctuations due to the impact of the production environment
However, the technical solutions of these two patents produce general-purpose slow-release fertilizers, and there is still a certain gap in terms of the special needs of nutrients for the growth of corn.

Method used

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  • Seed-friendly corn-specific controlled-release fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Seed-friendly controlled-release fertilizer for corn, the raw material components are as follows:

[0055] Sulfur plus polymer coated urea 45 parts

[0056] Sulfur plus polymer coated potassium chloride 9 parts

[0057] 4.5% thermoplastic thermosetting double-coated urea 10 parts

[0058] 5.0% thermoplastic thermosetting double-coated urea 15 parts

[0059] 13 parts diammonium phosphate

[0060] Granular potassium chloride 5 parts

[0061] 3 parts zinc sulfate.

[0062] Preparation:

[0063] (1) Sulfur plus polymer coated urea and coated potassium chloride:

[0064] A, get 9 kilograms of novolak epoxy resins, 1 kilogram of triethylenetetramine, mix uniformly, be mixed with macromolecular polymer coating agent A.

[0065] B. Get 100 kilograms of granular urea and 100 kilograms of granular potassium chloride with a diameter of 2 to 4 millimeters respectively, and wrap a layer of sulfur according to the prior art. The percentage of sulfur membrane material accountin...

Embodiment 2

[0071] Embodiment 2: Seed-friendly controlled-release fertilizer for corn, the mass parts of raw material components are as follows:

[0072] Sulfur plus polymer coated urea 35 parts

[0073] Thirteen parts of sulfur plus polymer coated potassium chloride

[0074] 4.5% thermoplastic thermosetting double-coated urea 15 parts

[0075] 5.0% thermoplastic thermosetting double-coated urea 10 parts

[0076] 17 parts diammonium phosphate

[0077] Granular potassium chloride 8 parts

[0078] Zinc sulfate 2 parts.

[0079] The raw material preparation method is the same as in Example 1.

Embodiment 3

[0080] Embodiment 3: Seed-friendly controlled-release fertilizer for corn, the mass parts of raw material components are as follows:

[0081] Sulfur plus polymer coated urea 38 parts

[0082] Sulfur plus polymer coated potassium chloride 11 parts

[0083] 4.5% thermoplastic thermosetting double-coated urea 12 parts

[0084] 5.0% thermoplastic thermosetting double-coated urea 13 parts

[0085] 15 parts diammonium phosphate

[0086] Granular potassium chloride 7 parts

[0087] Zinc sulfate 4 parts.

[0088] The raw material preparation method is the same as in Example 1.

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Abstract

The invention relates to a seed-friendly corn-specific controlled-release fertilizer which comprises the components of raw materials: high polymer sulfur-coated urea, high polymer sulfur-coated potassium chloride, 4.5% of thermoplastic heating solid double-layer coated urea, 5.0% of thermoplastic heating solid double-layer coated urea, diammonium phosphate, potassium chloride particles and zinc sulfate. The nutrient release of the corn-specific controlled-release fertilizer coincides with corn nutrient absorption, and the seed-friendly corn-specific controlled-release fertilizer is suitable for mechanical fertilizer application, is convenient for construction and labor-saving, leads the fertilizer to be close to the root system, and has high utilization rate.

Description

technical field [0001] The invention relates to a special controlled-release fertilizer for corn, in particular to a special controlled-release fertilizer for corn which is carried out simultaneously with sowing, suitable for mechanical fertilization, nutrient release and corn nutrient absorption synchronously and friendly to seeds, and belongs to the technical field of controlled-release fertilizer production . Background technique [0002] The yield of corn is high and the nutrient requirement is large. Fertilization is an important measure to increase yield. Due to the rapid dissolution of quick-acting fertilizers, if there is heavy rain or irrigation after being applied to the soil, a large amount of nutrients will be washed to the ground with the soil water, which will not only cause fertilizer loss, but also waste resources and pollute the environment. The best solution is to fertilize a small amount and repeatedly, but this increases labor costs and farmers' burden. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/90
Inventor 高义武陈德清范玲超李广涛张强
Owner KINGENTA ECOLOGICAL ENG GRP
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