Multi-layer charcoal powder coated slow release fertilizer special for vegetables and preparation method thereof

A biochar, slow-release fertilizer technology, applied in layered/coated fertilizers, applications, nitrogen fertilizers, etc., can solve the problems of reducing the use of chemical additives, fertilizer abuse and utilization, achieving excellent cracking rate data, and promoting early growth and fast growth. The effect of developing and increasing the number of viable microorganisms

Pending Publication Date: 2019-02-22
SHANDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects of the prior art, and to provide a special slow-release fertilizer for multi-layer film-coated vegetables of biochar powder and its preparation method. The present invention uses biochar powder of different particle sizes to coat the fertilizer for the first time , from the inside to the outside, the fine biochar powder shell is composed of coarse to fine biochar powder,

Method used

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  • Multi-layer charcoal powder coated slow release fertilizer special for vegetables and preparation method thereof
  • Multi-layer charcoal powder coated slow release fertilizer special for vegetables and preparation method thereof
  • Multi-layer charcoal powder coated slow release fertilizer special for vegetables and preparation method thereof

Examples

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Embodiment 1

[0038] Such as figure 1 , figure 2As shown, a special slow-release fertilizer for multi-layer coated vegetables with biochar powder, including a fertilizer core, and the outside of the fertilizer core is coated with multiple layers of biochar powder coating layer in turn, and the biochar powder coating layer contains biochar powder. The particle size of the biochar powder contained in the multi-layer biochar powder coating layer arranged from inside to outside gradually increases.

[0039] The fertilizer kernel includes a fertilizer core 1 made of urea granules. The outside of the fertilizer core is sequentially coated with the main fertilizer layer 2 in the middle growth stage of vegetables and the main nutrient fertilizer layer 3 in the vegetable seedling raising stage. Specifically, the outside of the fertilizer core is respectively coated with potassium sulfate and ammonium phosphate compound fertilizer coating layer, compound fertilizer coating layer, Ammonium bicarbon...

Embodiment 2

[0086] Such asfigure 1 , figure 2 As shown, a special slow-release fertilizer for multi-layer coated vegetables with biochar powder, including a fertilizer core, and the outside of the fertilizer core is coated with multiple layers of biochar powder coating layer in turn, and the biochar powder coating layer contains biochar powder. The particle size of the biochar powder contained in the multi-layer biochar powder coating layer arranged from inside to outside gradually increases.

[0087] The fertilizer inner core includes a fertilizer core 1 made of ammonium sulfate granules. The outer side of the fertilizer core is sequentially coated with the main fertilizer layer 2 in the middle growth stage of vegetables and the main nutrient fertilizer layer 3 in the vegetable seedling growth stage. Specifically, the outer side of the fertilizer core is sequentially coated with multi-layer nutrient packages such as ammonium phosphate coating layer and potassium sulfate coating layer. ...

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Abstract

The invention relates to the technical field of agricultural fertilizer, in particular to multi-layer charcoal powder coated slow release fertilizer special for vegetables and a preparation method thereof. The multi-layer charcoal powder coated slow release fertilizer special for the vegetables comprises fertilizer cores, wherein the outer sides of the fertilizer cores are sequentially covered with multiple layers of charcoal powder coating layers, the charcoal powder coating layers contain charcoal powder, and the granularity of the charcoal powder contained in the multiple layers of charcoalpowder coating layers, which are arranged inside and out increase gradually. According to the multi-layer charcoal powder coated slow release fertilizer special for the vegetables and the preparationmethod thereof, the charcoal powder in different particle size is adopted for coating the fertilizer, fine charcoal powder envelopes formed by the charcoal powder from coarse to fine are arranged inside and out respectively, the fertilizer coating shell strength is improved, the pore structures and pore diameters of charcoal of different coatings are controlled, processes of moisture penetrationand nutrient flowing out are retarded, the slow release effect is improved, the problems of fertilizer abuse, low utilization rates and the like in our country can be effectively solved, and a clean efficient utilization direction is provided for utilization of the charcoal.

Description

technical field [0001] The invention relates to the technical field of agricultural fertilizers, in particular to a special slow-release fertilizer for biochar powder multi-layer film-coated vegetables and a preparation method thereof. Background technique [0002] At present, vegetable planting is rapidly developing in scale and intensification, and a large amount of chemical fertilizers need to be applied in the process of vegetable planting. According to surveys, the utilization rate of chemical fertilizers in my country is only 35%-40%, and most of them are fixed by the soil or leached away, causing environmental problems such as eutrophication of water bodies and lakes. The excessive application of chemical fertilizers has caused serious degradation phenomena such as soil compaction, acidification, secondary salinization, and imbalance of nutrient ratios in the vegetable base, and the soil ecology has been seriously damaged. [0003] In recent years, researchers from v...

Claims

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Application Information

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IPC IPC(8): C05G5/00C05G3/00
CPCC05B7/00C05G3/00C05G5/30C05C3/00C05C9/00C05D1/02C05D9/00
Inventor 沈秀丽曾剑飞王兴鑫王芳张德俐易维明
Owner SHANDONG UNIV OF TECH
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