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Water-soluble efficient plant fertilizer and preparation method thereof

A plant fertilizer and compound fertilizer technology, applied in the field of plant fertilizer, can solve the problems of not comprehensively considering the key factors of plant fertilizer, such as production cost, water-soluble fertilizer effect and antibacterial synergistic effect, enhanced plant antibacterial property, and increased production cost, so as to ensure production cost And safety, good water solubility, low cost effect

Active Publication Date: 2020-01-14
杨建波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This water-soluble fertilizer production method that provides or prepares water-soluble chitin or chitosan separately not only increases the production cost significantly, but also is not conducive to enhancing the antibacterial properties of plants.
[0006] None of the above-mentioned existing technologies comprehensively consider the key factors of plant fertilizers such as production cost, water-soluble fertilizer effect and antibacterial synergistic effect, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Stearic acid amide, citric acid, magnesium oxide and water-insoluble nano-chitosan (average particle size 20-60nm; such as can be purchased from Sigma. Aldrich Company) after mixing according to the mass ratio of 1:1:1:1 , and the reaction was stirred at 90°C for 45 minutes. The reaction product was collected by cooling to obtain a coated powder with a particle size of 300-600 microns. Add commercially available urea compound fertilizer NPK20-5-5 (average particle size 2-4mm) into the drum and preheat it to 85°C, then add the coating powder (the mass ratio of urea compound fertilizer is 1:500) into the drum In the drum, rotate the drum until the coating powder is completely melted and forms a covering layer on the urea compound fertilizer particles. Collect after cooling to obtain plant fertilizer 1.

Embodiment 2

[0034] Others are the same as in Example 1, polyethylene wax is additionally added to the raw materials for the preparation of the coating powder, and the mass ratio of polyethylene wax to stearic acid amide is also 1:1. Prepare plant fertilizer 2.

Embodiment 3

[0036] Plant fertilizer 3 was prepared as in Example 1, except that the urea-based compound fertilizer NPK20-5-5 in Example 1 was replaced by the urea-based compound fertilizer preformed granules prepared as follows.

[0037] Water-insoluble nano-chitosan, citric acid, urea, nano-copper oxide and nano-iron oxide are mixed in a mass ratio of 1:1:15:0.3:0.2 and then placed in a hydrothermal reactor for hydrothermal reaction: the temperature is 115°C, pressure 1.8 atmospheres, time 70 minutes. The urea-based compound fertilizer preformed granules (average particle diameter 1-3mm) were collected after depressurized cooling to room temperature and dried.

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Abstract

The invention discloses a water-soluble efficient plant fertilizer and a preparation method thereof. According to the invention, water-insoluble chitin or chitosan, octadecanamide, citric acid and magnesium oxide are subjected to a mixing heating reaction to generate a coating composition, and the surface layers of urea-based compound fertilizer particles are coated with the coating composition, so that the water-soluble plant fertilizer with excellent properties can be produced.

Description

technical field [0001] The invention relates to a plant fertilizer, especially a water-soluble compound plant fertilizer. Background technique [0002] Plant fertilizers, especially water-soluble compound fertilizers, tend to harden and / or ash during transportation and storage, which is very unfavorable for fertilizer application and fertilizer efficiency. CN1102134C and US2018 / 0208516A1 discuss the synthesis of special organic compounds to suppress this phenomenon. CN1247524A etc. discussed the incorporation of finely divided inorganic materials to suppress this phenomenon. [0003] Chitin or chitin (chitin) has a wide range of applications, and can be used as pesticides and plant antiviral agents in agriculture. However, neither chitin nor its deacetylated derivative - chitosan (chitosan) is insoluble in water. If it is to be used in fertilizers, it usually requires special processing in advance, such as making it into a water-soluble substance. See For example, the sup...

Claims

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Application Information

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IPC IPC(8): C05G3/20C05G3/30C05G3/60
CPCC05C9/00C05G3/00
Inventor 杨建波
Owner 杨建波
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