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Anti-leaching fertilizer and preparation method thereof

A fertilizer and leaching technology, which is applied to fertilizer mixtures, layered/coated fertilizers, nitrogen fertilizers, etc., can solve the problems of easy leaching and low utilization rate, and achieve a high utilization rate, low cost, and simple and easy process. Effect

Inactive Publication Date: 2020-05-05
SHENZHEN BATIAN ECOTYPIC ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, provide a kind of anti-leaching fertilizer and its preparation method, aiming at solving the technical problems that the existing fertilizer is easy to leaching and the utilization rate is low

Method used

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  • Anti-leaching fertilizer and preparation method thereof
  • Anti-leaching fertilizer and preparation method thereof
  • Anti-leaching fertilizer and preparation method thereof

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preparation example Construction

[0023] On the other hand, the embodiment of the present invention also provides a preparation method of anti-leaching fertilizer, comprising the following steps:

[0024] S01: Provide urea granules;

[0025] S02: Preheating the urea granules, spraying the modified lignin solution on the surface of the urea granules, and drying the urea granules to obtain urea granules coated with a bonding layer; wherein, the bonding layer is modified by lignin composition;

[0026] S03: Coating lignin powder on the surface of the bonding layer to form a lignin layer to obtain the leaching-resistant fertilizer.

[0027] The preparation method of the leaching-resistant fertilizer provided by the embodiment of the present invention is a fertilizer coating technology process, specifically, first coating the surface of urea particles to form a bonding layer, and then coating the surface of the bonding layer to form a lignin layer, thereby obtaining The anti-leaching fertilizer of the unique stru...

Embodiment 1

[0040] A kind of anti-leaching fertilizer, the composition is as follows:

[0041] Modifier lignin binder: 1 part;

[0042] Lignin powder: 1 part;

[0043] Urea granules: 98 parts.

[0044] The preparation method comprises: preheating the urea granules, spraying a modified lignin binder on the surface of the urea granules, and drying with hot air to obtain urea granules coated with an adhesive layer; coating the lignin powder A lignin layer is formed on the surface of the bonding layer to obtain a lignin-coated anti-leaching fertilizer.

Embodiment 2

[0046] A kind of anti-leaching fertilizer, the composition is as follows:

[0047] Modifier lignin binder: 2 parts;

[0048] Lignin powder: 1 part;

[0049] Urea granules: 97 parts.

[0050] The preparation method is the same as in Example 1.

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Abstract

The invention belongs to the technical field of agricultural fertilizers, and particularly relates to an anti-leaching fertilizer and a preparation method thereof. The anti-leaching fertilizer comprises urea particles, lignin layers for coating the urea particles and bonding layers which are located between the urea particles and the lignin layer; wherein the bonding layers are composed of modified lignin. The anti-leaching fertilizer has a very good anti-leaching effect, the utilization rate of fertilizer nutrients can be increased, and meanwhile, lignin is a renewable, non-toxic, cheap and biodegradable natural organic matter, so that the anti-leaching fertilizer not only has a slow release effect, but also has the characteristics of no pollution and environmental friendliness, and is remarkably superior to the prior art.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and in particular relates to a leaching-resistant fertilizer and a preparation method thereof. Background technique [0002] According to the latest statistics from the Ministry of Agriculture, in 2017, domestic chemical fertilizer consumption was about 60 million tons, while the utilization rate of chemical fertilizer in the three major food crops of rice, corn and wheat was 37.8%. The fertilizer utilization rate of grain crops in the United States is roughly 50%, and that of major European countries is 65%, which is 15-30 percentage points higher than that of my country. One of the main reasons for the low utilization rate of chemical fertilizers is that chemical fertilizers are easily leached and lost to waste during natural rainfall and artificial irrigation. Therefore, improving the utilization rate of chemical fertilizers and producing a kind of anti-leaching fertilizer is...

Claims

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Application Information

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IPC IPC(8): C05G3/90C05G5/30
CPCC05C9/00C05G3/00Y02P60/21Y02A40/22
Inventor 刘学文李峰张建军张闯张广杰蔡文安
Owner SHENZHEN BATIAN ECOTYPIC ENG
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