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Processing method of chitosan fluid fertilizer

A technology of liquid fertilizer and processing method, applied in the direction of organic fertilizer, etc., can solve problems such as poor fertilizer efficiency and stability

Active Publication Date: 2014-09-03
山东嘉丰海洋生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the continuous degradation of macromolecular chitosan in acidic solution, the fertilizer efficiency stability of chitosan liquid fertilizer is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: the processing method of chitosan liquid fertilizer, step is as follows:

[0025] 1. Steam explosion

[0026] Put the chitosan raw material into the steam explosion tank, the addition amount is 15% of the volume of the steam explosion tank, and seal it; feed high-pressure steam into the steam explosion tank to make the pressure in the tank reach 1.2MPa, and keep it for 10 minutes; then quickly open the steam explosion tank. Explode the tank valve, let off the high-pressure steam in the steam explosion tank, and release the chitosan into the normal pressure container to obtain the steam explosion chitosan.

[0027] 2. Drying and crushing

[0028] Place the steam-exploded chitosan in a drier, spread it thinly, make the thickness of the raw material 5cm, bake at 60°C for 9 hours, until the steam-exploded chitosan is completely dry (moisture ≤ 5wt%). The dried steam-exploded chitosan is placed in a pulverizer for pulverization, and the pulverization fineness...

Embodiment 2

[0033] Embodiment 2: As described in Embodiment 1, the difference is:

[0034] 1. The amount of chitosan added is 20% of the volume of the steam explosion tank, and the pressure in the steam explosion tank is 1.5MPa, and it is kept for 8 minutes;

[0035] 2. Put the steam-exploded chitosan in a dryer, dilute it so that the thickness of the raw material is 6cm, and dry it for 8 hours at a temperature of 70°C. The crushing fineness is 70 mesh.

[0036] 3. The ratio of steam-exploded chitosan powder to acetic acid-sodium acetate buffer liquid is 1:13. The temperature was raised to 60° C. and maintained for 5 hours.

Embodiment 3

[0037] Embodiment 3: As described in Embodiment 1, the difference is:

[0038] 1. The amount of chitosan added is 30% of the volume of the steam explosion tank, and the pressure in the steam explosion tank is 1.8MPa, and it is kept for 10 minutes;

[0039] 2. Place the steam-exploded chitosan in a drier, dilute it so that the thickness of the raw material is 6cm, and dry it for 6 hours at a temperature of 80°C. The crushing fineness is 80 mesh.

[0040] 3. The ratio of steam-exploded chitosan powder to acetic acid-sodium acetate buffer liquid is 1:15. The autoclave was then warmed to 80°C for 4 hours.

[0041] 4. Add deionized water to the steam-exploded chitosan powder dissolved in the reaction kettle to make the chitosan content reach 5wt%, and pack them in 1000ml plastic bottles, which is the chitosan foliar fertilizer.

[0042] Field fertilizer test situation

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Abstract

The invention relates to a processing method of chitosan fluid fertilizer. The method comprises the following steps in sequence: placing chitosan raw materials into a steam explosion tank for steam explosion; transferring the chitosan subjected to steam explosion into a high-pressure steam tank at 1 to 1.8MPa, and maintaining for 5 to 15 minutes; instantaneously releasing the chitosan subjected to steam explosion by decompressing; drying and crushing the chitosan subjected to steam explosion; adding acetic acid-sodium acetate buffering solution; heating to 50 to 90 DEG C; and carrying out acidolysis for 3.5 to 5 hours. By adopting the processing method, the activity of chitosan is improved, the stability of the chitosan fluid fertilizer is improved, and the output of crops is increased.

Description

technical field [0001] The invention relates to a processing method of chitosan liquid fertilizer and belongs to the technical field of liquid fertilizer. Background technique [0002] my country is a large agricultural country with a population of 1.3 billion. It only accounts for 9% of the world's arable land and 6% of the fresh water resources, but bears the burden of feeding 21% of the world's population. In the past nine years, my country's grain production has maintained a steady growth trend, and the output of many agricultural products ranks first in the world. The main way to increase crop yield is to increase the yield per unit area of ​​land, and one of the main measures to maintain high yield and increase yield is still to increase the use of chemical fertilizers. According to statistics, my country's fertilizer production and consumption both rank first in the world. As a large amount of chemical fertilizers are applied to the soil of farmland, it not only cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F11/00
Inventor 郭菁泉维洁郭德强朱强
Owner 山东嘉丰海洋生物科技有限公司