Synchronous nutrient controlled release fertilizer special for cotton and application thereof

A controlled-release fertilizer and cotton technology, applied in the field of controlled-release fertilizers, can solve the problems of film shell rupture, sudden release of nutrients in the film, root burnt, etc., and achieve the effect of facilitating root absorption, improving fertilizer utilization rate, and less dosage

Active Publication Date: 2010-11-24
菏泽金正大生态工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sulfur coating material in this kind of controlled-release fertilizer is easily affected by oxidation and other effects, and the film shell will rupture, resulting in the sudden release of nutrients in the film. If it is concentrated near the cotton root system, it will easily cause root burning, so it can only be used Full layer application as basal fertilizer

Method used

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  • Synchronous nutrient controlled release fertilizer special for cotton and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Cotton-specific controlled-release fertilizer, the mass parts of raw material components are as follows:

[0046] Humic acid coated compound fertilizer 500kg,

[0047] Sulfur plus polymer coated urea 300kg,

[0048] 5% thermoplastic and thermosetting double-coated urea 120kg,

[0049] 6% thermoplastic and thermosetting double-coated urea 50kg,

[0050] Zinc sulfate 20kg,

[0051] Boric acid 10kg.

[0052] Preparation:

[0053] (1) Preparation of humic acid coated compound fertilizer:

[0054] Mix 10kg of epoxy resin and 1kg of triethylenetetramine evenly, and make it into a binder for later use.

[0055] Take 1000kg of compound fertilizer with a particle size of 2-3mm, preheat it to 65°C-70°C in a drum, spray 5kg of the above-mentioned binder on the rotating fertilizer particles, and then spray 25kg of air-dried and pulverized weathered coal to solidify Finally, repeat the above-mentioned process 1 time until the binder accounts for 1% of the core fertilizer mass, ...

Embodiment 2

[0064] Embodiment 2: special controlled-release fertilizer for cotton, raw material component mass parts are as follows:

[0065] Humic acid coated compound fertilizer 450kg,

[0066] Sulfur plus polymer coated urea 350kg,

[0067] 5% thermoplastic and thermosetting double-coated urea 97kg,

[0068] 6% thermoplastic and thermosetting double-coated urea 80kg,

[0069] Zinc sulfate 15kg,

[0070] Boric acid 8kg.

[0071] The raw material preparation method is the same as in Example 1.

Embodiment 3

[0072] Embodiment 3: special controlled-release fertilizer for cotton, raw material component mass parts are as follows:

[0073] Humic acid coated compound fertilizer 550kg,

[0074] Sulfur plus polymer coated urea 250kg,

[0075] 5% thermoplastic and thermosetting double-coated urea 110kg,

[0076] 6% thermoplastic and thermosetting double-coated urea 60kg,

[0077] Zinc sulfate 25kg,

[0078] Boric acid 5kg.

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

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Abstract

The invention relates to a synchronous nutrient controlled release fertilizer special for cotton and application thereof. The controlled release fertilizer special for cotton is prepared by compounding a humic acid coated controlled release fertilizer, a sulfurated high polymer coated controlled release fertilizer, thermoplastic and thermosetting double-layer coated urea, zinc sulfate and boric acid. The nutrient release rule of the controlled release fertilizer special for the cotton and the nutrient absorption rule of the cotton are synchronous, the controlled release fertilizer special for the cotton is applied to a planting ditch in a concentration way at one time when the cotton is seeded or transplanted, the top application is not needed any more, the controlled release fertilizer special for the cotton has no harm to root systems, and the fertilizer utilization rate is high.

Description

technical field [0001] The invention relates to a controlled-release fertilizer, in particular to a special controlled-release fertilizer for cotton that does not damage the root system and is applied in a sowing ditch (or hole) during sowing and a preparation method thereof, and belongs to the technical field of controlled-release fertilizers. Background technique [0002] Cotton is one of the main crops in my country, and the planting area reached 5 million hectares in 2010. However, compared with major crops such as wheat, corn, and rice, the planting area of ​​cotton is the most volatile, mainly due to large fluctuations in planting income. The key to solving the problem is macro-control and keeping product prices stable. Efforts to reduce costs and increase input income are also one of the important measures to maintain stable cotton production. According to the survey, the cost of growing cotton mainly includes the input cost of basic materials, labor cost and land co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08A01C21/00A01G1/00C05G3/90
Inventor 颜明霄高志光吴晓清
Owner 菏泽金正大生态工程有限公司
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