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A kind of fertilizer accelerator and preparation method thereof

A technology of accelerators and fertilizers, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of high labor intensity, high cost, inability to effectively prolong fertilizer efficiency, etc., and achieve the effect of prolonging fertilizer efficiency.

Active Publication Date: 2016-10-19
党永富
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned fertilizers cannot effectively prolong the fertilizer efficiency, and need to be applied multiple times during the plant growth period, which is costly and labor-intensive, and is not suitable for optimizing field management.

Method used

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  • A kind of fertilizer accelerator and preparation method thereof
  • A kind of fertilizer accelerator and preparation method thereof
  • A kind of fertilizer accelerator and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The fertilizer accelerator in this embodiment is composed of adsorbent and polyglutamic acid cross-linked product, the mass ratio is adsorbent:polyglutamic acid cross-linked product=1:20, and the adsorbent is straw activated carbon.

[0023] The preparation method of fertilizer accelerator in the present embodiment, comprises the following steps:

[0024] (1) Put straw activated carbon (80 mesh) in the fermentation broth of Bacillus subtilis producing polyglutamic acid, and ferment at 35°C for 37 hours to produce polyglutamic acid; the fermentation medium formula (g / L) is: glucose 20 , Peptone 10, Sodium Glutamate 20, Na 2 HPO 4 1. NaH 2 PO 4 1. MgSO 4 5, pH7.0;

[0025] (2) Heat up to 115°C for inactivation for 30 minutes, add sulfur oxychloride catalyst, add alkaline (50% sodium hydroxide and 1M hydrochloric acid) stabilizer with a pH value of 8.0 (± 0.02) after filtration, stir and react for 12 hours Polyglutamic acid crosslinking, the mass ratio of straw activ...

Embodiment 2

[0027] The fertilizer accelerator in this embodiment is composed of adsorbent and polyglutamic acid cross-linked product, the mass ratio is adsorbent:polyglutamic acid cross-linked product=1:25, and the adsorbent is corncob activated carbon.

[0028] The preparation method of fertilizer accelerator in the present embodiment, comprises the following steps:

[0029] (1) Put corn cob activated carbon (80 mesh) in the fermentation broth of Bacillus subtilis producing polyglutamic acid, and ferment at 35°C for 37 hours to produce polyglutamic acid; the fermentation medium formula (g / L) is: glucose 20, peptone 10, sodium glutamate 20, Na 2 HPO 4 1. NaH 2 PO 4 1. MgSO 4 5, pH7.0;

[0030] (2) Prepare polyglutamic acid cross-linked products on the surface of corncob activated carbon by chemical crosslinking method (see patent application number 201110261625.X, preparation method of biocompatible γ-polyglutamic acid hydrogel, corncob activated carbon The mass ratio of polyglutami...

Embodiment 3

[0032] The fertilizer accelerator in this embodiment is composed of adsorbent and polyglutamic acid cross-linked product, the mass ratio is adsorbent:polyglutamic acid cross-linked product=1:50, and the adsorbent is corncob activated carbon.

[0033] The preparation method of fertilizer accelerator in the present embodiment, comprises the following steps:

[0034] (1) Put corn cob activated carbon (80 mesh) in the fermentation broth of Bacillus subtilis producing polyglutamic acid, and ferment at 35°C for 37 hours to produce polyglutamic acid; the fermentation medium formula (g / L) is: glucose 20, peptone 10, sodium glutamate 20, Na 2 HPO 4 1. NaH 2 PO 4 1. MgSO 4 5, pH7.0;

[0035] (2) Prepare polyglutamic acid cross-linked products on the surface of corn cob activated carbon by chemical cross-linking method (see "Gamma-polyglutamic acid hydrogel preparation and biosafety evaluation"), which is generated in step (1) Polyglutamic acid is used as raw material, allyl bromid...

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Abstract

The invention discloses a fertilizer accelerator and its preparation method, and belongs to the technical field of agricultural fertilizers. The fertilizer accelerator is composed of an adsorbent and a polyglutamic acid cross-linked product, and a mass ratio of the adsorbent to the polyglutamic acid cross-linked product is 1:(20-50). The preparation method comprises the following steps: placing the adsorbent in a polyglutamic acid microbe fermentation liquid, and fermenting to produce polyglutamic acid; and cross-linking the generated polyglutamic acid to prepare the polyglutamic acid cross-linked product which is the fertilizer accelerator. In the invention, polypoly glutamic acid bio-macromolecules are adsorbed and anchored by an active carbon material, so the fertilizer accelerator has a faster decomposition speed than common microbes to ferment the common microbial fermentation polyglutamic acid solution, can effectively prolong the fertilizer efficiency to about 60d from 7-10d, and can substitute one fertilizer dressing in order to realize fertilizer decrease and no yield decrease.

Description

technical field [0001] The invention relates to a fertilizer accelerator and a preparation method of the accelerator, belonging to the technical field of agricultural chemical fertilizers. Background technique [0002] Polyglutamic acid (γ-PGA) synthesized by microorganisms is a water-soluble, biodegradable biopolymer composed of D-type or L-type glutamic acid linked by γ-amide bonds (D-glutamine The proportion of acid varies with strains and culture conditions), usually contains about 5,000 glutamic acid monomers, and the molecular weight distribution is between 100 and 10,000 kDa. Polyglutamic acid has functional properties such as gelling, film-forming, moisturizing, bonding, thickening, and emulsification, and can be used as a thickener, water-absorbing moisturizer, antifreeze, sustained-release material, drug carrier, Degradable fibers, superabsorbent resins, biological flocculants, heavy metal adsorbents, animal feed additives, etc. [0003] Polyglutamic acid has sup...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
CPCC05G3/00
Inventor 党永富陈胜涛
Owner 党永富