Preparation method of slow-release fertilizer

A slow-release fertilizer and pressure technology, applied in the field of slow-release fertilizer preparation, can solve the problems of changing soil PH value, increasing economic cost, strong pre-effect, etc. Effect

Inactive Publication Date: 2017-08-22
陶圣香
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] China is a large agricultural country. With the improvement of living standards, the demand for crop production is increasing. The widespread use of chemical fertilizers has promoted the increase in production. However, as far as the current chemical fertilizers are concerned, they have strong pre-effects and after-effects It has the characteristics of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A preparation method of slow-release fertilizer, mainly comprising the following steps:

[0014] A. Put corn stalks, soybean stalks and wheat stalks into a pulverizer according to a certain ratio for crushing. The speed of the pulverizer is 2000 rpm, and the time is 30 minutes. Then add the mixture to the biological strain and place it in the reactor for fermentation. , the temperature is set to 25°C, the pressure is 1500Pa, and the time is 8h;

[0015] B, put peat soil, seaweed mud and hulled chaff ash into the reactor for anaerobic decomposition, the temperature is set at 300°C, the pressure is 1.2MPa, and then sieved with a 0.5cm sieve;

[0016] C, mix the mixture obtained in step A and step B, add ammonium chloride, potassium sulfate, urea, coconut bran, trace elements and camphor oil and stir;

[0017] D. Make the mixture in step C into round granules according to the mold, and then react the granules with the epoxy resin coating, using CO2 as the medium, supercri...

Embodiment 2

[0020] A preparation method of slow-release fertilizer, mainly comprising the following steps:

[0021] A. Put corn stalks, soybean stalks and wheat stalks into a pulverizer according to a certain ratio for crushing. The speed of the pulverizer is 2000 rpm, and the time is 40 minutes. Then add the mixture to the biological strain and place it in the reactor for fermentation. , the temperature is set to 30°C, the pressure is 1200Pa, and the time is 6h;

[0022] B. Put peat soil, seaweed mud and chaff ash into the reactor for anaerobic decomposition, set the temperature at 500°C, and the pressure at 1.5MPa, and then sieve through a 0.2cm sieve;

[0023] C, mix the mixture obtained in step A and step B, add ammonium chloride, potassium sulfate, urea, coconut bran, trace elements and camphor oil and stir;

[0024] D. Make the mixture in step C into round granules according to the mold, and then react the granules with the epoxy resin coating, using CO2 as the medium, supercritica...

Embodiment 3

[0027] A preparation method of slow-release fertilizer, mainly comprising the following steps:

[0028] A. Put corn stalks, soybean stalks and wheat stalks into a pulverizer according to a certain ratio for crushing. The speed of the pulverizer is 2000 rpm, and the time is 45 minutes. Then add the mixture to the biological strain and place it in the reactor for fermentation. , the temperature is set to 30°C, the pressure is 1400Pa, and the time is 7h;

[0029] B. Put peat soil, seaweed mud and hulled chaff ash into the reactor for anaerobic decomposition, set the temperature to 450°C, and the pressure to 1.4MPa, and then sieve through a 0.4cm sieve;

[0030] C, mix the mixture obtained in step A and step B, add ammonium chloride, potassium sulfate, urea, coconut bran, trace elements and camphor oil and stir;

[0031] D. Make the mixture in step C into round granules according to the mold, and then react the granules with the epoxy resin coating, using CO2 as the medium, super...

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PUM

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Abstract

The invention discloses a preparation method of a slow-release fertilizer. The preparation method mainly comprises the following steps: fermenting; carrying out anaerobic decomposition; mixing, and stirring; forming; and carrying out film coating fixation. The preparation method has the beneficial effects that a processing method is simple, the raw material are cheap and easily available, the processing cost is low, the slow-release fertilizer has good ventilating and moisture-holding effects, is rich in nutrition, can be used for a long time, is convenient to use, safe and capable of preventing fertilizer damage and pest damage, the time is saved, stable pH value of the soil is guaranteed, the soil quality is improved to a certain degree, and the production quantity is increased.

Description

technical field [0001] The invention relates to the technical field of chemical fertilizer processing, in particular to a preparation method of slow-release fertilizer. Background technique [0002] China is a large agricultural country. With the improvement of living standards, the demand for crop production is increasing. The widespread use of chemical fertilizers has promoted the increase in production. However, as far as the current chemical fertilizers are concerned, they have strong pre-effects and after-effects It has the characteristics of no sex, and changes the pH value of the soil after long-term use. In the process of crop production, it needs to fertilize many times, which increases the economic cost, and also has certain fertilizer damage. Therefore, there is an urgent need for a long-term use, no fertilizer Slow-release chemical fertilizers that are harmful and ensure a stable pH value. Contents of the invention [0003] The object of the present invention ...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/02C05G3/04C05G3/60C05G3/80
CPCC05C3/00C05G3/60C05G3/80C05G5/37C05C9/00C05D1/02C05D9/00C05D9/02C05F11/00C05F11/02C05F11/08C05F17/00Y02P20/54
Inventor 陶圣香
Owner 陶圣香
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