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Preparation method of special disposable mechanically-applied fertilizer for corn

A corn-specific, one-off technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of weak friction resistance, easy breakage, uneven mechanical fertilization, etc.

Active Publication Date: 2012-11-14
菏泽金正大生态工程有限公司
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Problems solved by technology

However, these fertilizer coating agents are not strong in friction resistance and are easily broken during mechanical fertilization
The seed-friendly controlled-release fertilizer for corn disclosed in CN 201010159451.1 adopts a double-coated controlled-release nitrogen fertilizer, and its film layer has strong toughness and anti-friction ability, which is suitable for mechanical fertilization, but it also has shortcomings, such as it is composed of different fertilizers It is formulated from different varieties, and its particle uniformity is poor; moreover, the zinc fertilizer it contains is in the form of powder, which is easy to make mechanical fertilization uneven

Method used

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  • Preparation method of special disposable mechanically-applied fertilizer for corn
  • Preparation method of special disposable mechanically-applied fertilizer for corn

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Embodiment Construction

[0010] The preparation method of the special disposable machine-applied fertilizer for corn, the steps are as follows:

[0011] (1) According to the mass ratio 1: (0.15~0.4): (0.25~0.6): (0.016~0.018) take urea, monoammonium phosphate, potassium chloride, zinc sulfate, mix evenly, and granulate according to the existing high tower , Sieve the obtained granular fertilizer, and take the granular fertilizer with a particle size of 2-4 mm as the core fertilizer.

[0012] (2) Preheat the core fertilizer prepared in step (1) to 40°C to 50°C in the drum, and spray the molten urea solution at 125°C on the continuously rotating core fertilizer particles in the drum to form a urea film , the mass of urea film accounts for 4-6wt% of the core fertilizer mass, and the urea-coated fertilizer is obtained.

[0013] (3) Mix recycled polyethylene film resin and recycled polystyrene foam resin in a mass ratio of 1 to 3:1, dissolve in a mixed solvent of dichloromethane and tetrachloroethylene in...

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Abstract

The invention relates to a preparation method of a special disposable mechanically-applied fertilizer for corn. According to the invention, urea, monoammonium phosphate, potassium chloride and zinc sulfate are compounded, a high-tower granulated compound fertilizer is used as the core fertilizer, and double film layers are coated, wherein the inner layer film is a urea film and used for improving the surface characteristic of the fertilizer granules, and the outer layer film is a thermoplastic resin coating and a thermosetting coating and is used for controlling the release of the nutrients. The special mechanically-applied fertilizer for corn has more smooth and harder surface, and is suitable for mechanical application. The fertilizer satisfies the requirements of corn for absorbing nitrogen, phosphorus, potassium, zinc and other nutrients; and the large-scale field test proves that the fertilizer has favorable yield increase effect.

Description

technical field [0001] The invention relates to a preparation method of a special disposable machine-applied fertilizer for corn, which belongs to the technical field of fertilizer production and application. Background technique [0002] Corn is one of the main food crops in my country, and it is also an important feed crop. According to statistics from the National Grain and Oil Information Center, in 2012, the country's corn sown area reached 35 million hectares. Corn cultivation is simple and highly mechanized, and it is one of the crops that farmers like to grow. At present, there is a serious shortage of labor force in rural areas in my country. Field management in corn planting areas mainly relies on the elderly and women over 50 years old. It is urgent to realize the mechanization of operations such as sowing, harvesting, and fertilization. In recent years, in order to meet the needs of corn planting, the mechanization level of corn sowing, harvesting, straw return...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08C05G1/06C05G3/90
Inventor 解玉洪蒋祖卫杨宏海
Owner 菏泽金正大生态工程有限公司
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