Controlled-released fertilizer preparation method and commercial crop controlled-released fertilizer prepared according to controlled-released fertilizer preparation method

A technology for economic crops and slow and controlled release fertilizers, applied in the field of compound fertilizers, can solve the problems of long release period, fertilizer accumulation, excessive use of chemical fertilizers, etc., and achieve the effects of promoting early maturity, increasing growth rate, and reducing dosage.

Inactive Publication Date: 2016-06-08
SHANDONG ZHIFENG NONGHUA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, the extensive use of chemical fertilizers has also brought great disadvantages
For example, the utilization rate of chemical fertilizers in China is not high, the utilization rate of nitrogen fertilizer is only 35%, and the utilization rate of phosphorus fertilizer is only 10-25%. The low utilization rate of these fertilizers not only causes serious waste of resources, but also causes a large amount of fertilizer to accumulate in the soil , causing soil ag...

Method used

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  • Controlled-released fertilizer preparation method and commercial crop controlled-released fertilizer prepared according to controlled-released fertilizer preparation method
  • Controlled-released fertilizer preparation method and commercial crop controlled-released fertilizer prepared according to controlled-released fertilizer preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation method of slow and controlled release fertilizer for economic crops of the present invention comprises the following steps:

[0040] (1) Weigh each raw material according to the following formula: 100 parts of sodium tripolyphosphate alkali residue, 35 parts of bagasse, 20 parts of fish pond sludge, 6 parts of gibberellin bacteria residue, 6 parts of Sophora flavescens aerial part, 20 parts of holly leaves 12 parts of wormwood, 16 parts of mixed bacteria, 38 parts of seaweed slag, 18 parts of cinder, 8 parts of bamboo charcoal, 35 parts of diammonium phosphate, 22 parts of superphosphate, 35 parts of urea, and 26 parts of potassium chloride; The formula takes sodium tripolyphosphate alkali slag, according to the insoluble P 2 o 5 The theoretical amount of papermaking black liquor is added to it, and the temperature is controlled at 80-85°C for stirring reaction, so that the insoluble P in sodium tripolyphosphate alkali slag 2 o 5 into soluble P 2 o ...

Embodiment 2

[0047] The preparation method of slow and controlled release fertilizer for economic crops of the present invention comprises the following steps:

[0048] (1) Weigh each raw material according to the following formula: 80 parts of sodium tripolyphosphate alkali residue, 40 parts of bagasse, 15 parts of fish pond sludge, 10 parts of gibberellin bacteria residue, 5 parts of aboveground part of Sophora flavescens, 25 parts of holly leaves 10 parts of wormwood, 20 parts of mixed bacteria, 35 parts of seaweed slag, 20 parts of cinder, 5 parts of bamboo charcoal, 40 parts of diammonium phosphate, 25 parts of superphosphate, 30 parts of urea, and 30 parts of potassium chloride; The formula takes sodium tripolyphosphate alkali slag, according to the insoluble P 2 o 5 The theoretical amount of papermaking black liquor is added to it, and the temperature is controlled at 80-85°C for stirring reaction, so that the insoluble P in sodium tripolyphosphate alkali slag 2 o 5 into soluble ...

Embodiment 3

[0055] According to the method of Example 1, slow-release fertilizers for economic crops are prepared. The difference is that the following raw materials are used in parts by weight as follows: 120 parts of sodium tripolyphosphate alkali residue, 30 parts of bagasse, 25 parts of fish pond sludge, gibberella 5 parts of vegetable residue, 10 parts of Sophora flavescens, 15 parts of holly leaves, 15 parts of wormwood, 15 parts of mixed bacteria, 40 parts of seaweed residue, 15 parts of coal cinder, 10 parts of bamboo charcoal, 30 parts of diammonium phosphate, heavy Calcium phosphate 20 parts, urea 40 parts, potassium chloride 25 parts.

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PUM

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Abstract

The invention discloses a controlled-released fertilizer preparation method and a commercial crop controlled-released fertilizer prepared according to the controlled-released fertilizer preparation method. The method includes steps: adding papermaking black liquid into sodium tripolyphosphate caustic sludge, adding bagasse, fishpond sludge, gibberellin fungus residues, an overground part of Sophora Flavescens, Ilex Chinensis Sims, Artemisia Vulgaris and mixed bacteria to realize fermentation, adding seaweed gel residues, coal cinders, bamboo charcoal, diammonium phosphate and a binding agent into a fermentation product, and granulating to obtain particles 1; granulating triple superphosphate, urea and potassium chloride to obtain particles 2; adding leaves of musa basjoo, Radix glycyrrhizae, Fructus Psoraleae and Radix Tripterygii wilfordii into water, decocting, and adding ureaformaldehyde into decoction to obtain coating liquid; coating the particles 1 and the particles 2 with the coating liquid to obtain the controlled-released fertilizer. The controlled-released fertilizer is high in phosphorus content and can be used for various crops, vegetables, fruits and the like high in phosphorus demand. By separate granulation of the raw materials, nutritional ingredients can be released at different stages, the fertilizer is approximately released by 60% in an early stage and 40% in a later stage, and accordingly growth requirements of crops can be met in a whole growing period.

Description

technical field [0001] The invention relates to a preparation method of a slow and controlled release fertilizer and the prepared slow and controlled release fertilizer for economic crops, belonging to the technical field of compound fertilizers. Background technique [0002] Fertilizer is the most important agrochemical. It provides nutrients for plants, promotes the growth of crops, and increases crop yields. With the increase of the world's population, agricultural production has also increased rapidly, and people have put forward higher requirements for the yield per mu of crops, which has further increased the amount of chemical fertilizers. However, in recent years, the extensive use of chemical fertilizers has also brought great disadvantages. For example, the utilization rate of chemical fertilizers in China is not high, the utilization rate of nitrogen fertilizer is only 35%, and the utilization rate of phosphorus fertilizer is only 10-25%. The low utilization rate...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/02C05F17/00C05G3/60C05G3/80
CPCC05B1/04C05F17/00C05G3/60C05G3/80C05G5/30C05B5/00C05B7/00C05C9/00C05D1/02C05F5/002C05F7/00C05F11/00C05F11/02C05F11/08C05G3/00Y02W30/40
Inventor 吴德华丁耀平
Owner SHANDONG ZHIFENG NONGHUA GRP
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