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Liquid fertilizer containing chitosan and urea

A liquid fertilizer, chitosan technology, applied in fertilizer mixture, fertilization device, application and other directions, can solve the problem of no effective development, and achieve the effect of promoting growth rate, maintaining nutritional balance, and reducing foliar diseases and insect pests

Inactive Publication Date: 2013-04-17
QINGDAO JINGLING OCEAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of chitosan in the field of organic fertilizers has not been effectively carried out at present. Therefore, it is very important to find new chitosan organic fertilizers that can partially or completely replace chemical fertilizers and have the effect of farmyard manure improving soil.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take 40g of urea and dissolve it with 1000ml of water, stir well, then add 40g of carboxymethyl chitosan, stir evenly to make water-soluble fertilizer.

Embodiment 2

[0019] Take 60g of urea and dissolve it with 1000ml of water, stir well, then add 30g of carboxymethyl chitosan, stir evenly to make water-soluble fertilizer.

Embodiment 3

[0021] Get 40g of urea and dissolve it with 1000ml of water, after fully stirring, then add 40g of carboxymethyl chitosan, stir evenly to make a water-soluble fertilizer, then add the prepared Bacillus subtilis bacterium liquid, so that the prepared liquid fertilizer contains Bacillus subtilis The concentration of bacillus was 1×10 3 -10 4 cfu / ml.

[0022] Bacillus subtilis can be selected from strains used in agriculture, such as live bacteria powder sold on the market.

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PUM

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Abstract

The invention relates to a liquid fertilizer which is urea aqueous solution added with chitosan, wherein the concentration of chitosan is 2-4% by massic volume. The chitosan is water-soluble chitosan such as carboxymethyl chitosan. Bacillus subtilis or Chinese herbal medicine extract liquid prepared from tripterygium wilfordii, calamus and lemongrass is selectively added into the liquid fertilizer provided by the invention. The fertilizer provided by the invention can effectively promote the growth rate of crop and keep the nutrient balance of the crop. The component with an insecticidal effect is added into the fertilizer, thereby effectively reducing the pest and disease damage of the leaf surface when being applied to the leaf surface.

Description

technical field [0001] The invention belongs to the technical field of application of marine substances, and in particular relates to a liquid fertilizer containing chitosan and urea. Background technique [0002] my country is a large agricultural country, and the increase of agricultural production and income cannot be separated from the application of chemical fertilizers. However, while the use of chemical fertilizers increases the yield of crops, it also brings disadvantages such as soil compaction and residues in agricultural products. At present, the situation of soil fertilization in our country is more focused on the input of chemical fertilizers, but the utilization rate of chemical fertilizers has not been improved. Due to excessive and blind increase in the use of chemical fertilizers, the utilization rate of chemical fertilizers has a tendency to decline. Although the use of farmyard manure can overcome problems such as soil compaction and chemical residues. H...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/02C05G3/60
Inventor 李国民
Owner QINGDAO JINGLING OCEAN TECH
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