Method for controlling desertification by adopting novel biological material gamma-polyglutamic acid (PGA)

A technology of polyglutamic acid and biological materials, applied in soil conditioning materials, chemical instruments and methods, organic fertilizers, etc., can solve problems such as difficulty in success, and achieve the effect of reducing transpiration and infiltration, and high physical strength

Inactive Publication Date: 2012-03-21
天津北洋百川生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the combined effects of the extremely arid climate, the high scarcity of freshwater resources and the sandy structure of the soil...

Method used

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  • Method for controlling desertification by adopting novel biological material gamma-polyglutamic acid (PGA)

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] After planting Salix salix in the desert, spray the ground surface of Salix salix roots with gamma-polyglutamic acid aqueous solution for 5 times; 3% and 3%;

[0026] The use interval of the gamma-polyglutamic acid aqueous solution is once every 3 days;

[0027] The gamma-polyglutamic acid consumption is 175g / m 2 ;

[0028] The salix salix treated by the method of the invention has a survival rate of 91 percent, the film on the root of the plant still exists within one year, and has good water absorption and water retention effects. Due to the presence of γ-polyglutamic acid film on the surface of Salix salix, it is not necessary to continue watering 30 days after planting Salix salix.

[0029] Compared with the Salix salix irrigated with the control water, the Salix salix treated by the method of the invention reduces the amount of irrigation water by 30%, and the survival rate is increased by 50%.

example 2

[0031] After planting Hippophae rhamnoides on the desert, spray the root surface of Salix salix 10 times with γ-polyglutamic acid aqueous solution;

[0032] The concentration of the polyglutamic acid aqueous solution used each time is 3%;

[0033] The use interval of the gamma-polyglutamic acid aqueous solution is once every 2 days;

[0034] The gamma-polyglutamic acid consumption is 75g / m 2 ;

[0035] The survival rate of the seabuckthorn treated by the method of the invention reaches 75%, and the film at the root of the seabuckthorn still exists within 6 months, and has good water absorption and water retention effects. Due to the presence of γ-polyglutamic acid film on the surface of seabuckthorn, Salix salix does not need to be watered 20 days after planting.

[0036] Compared with the seabuckthorn irrigated with the control water, the seabuckthorn treated by the method of the invention reduces the water consumption by 30%, and the survival rate increases by 24%.

example 3

[0038] After planting camel thorns on the desert, spray the γ-polyglutamic acid aqueous solution onto the ground surface of Salix salix roots for 3 times; the concentration of the polyglutamic acid aqueous solution used for the three times is 8%, 5%, and 2% successively;

[0039] The use interval of the gamma-polyglutamic acid aqueous solution is once every 4 days;

[0040] The γ-polyglutamine consumption is 260g / m 2 ;

[0041] The survival rate of the camel thorn treated by the method of the invention reaches 95%, the film at the root of the camel thorn still exists within one year, and has good water absorption and water retention effects. Due to the existence of the γ-polyglutamic acid film on the surface of the camel thorn, the camel thorn does not need to continue watering after 20 days of planting.

[0042] Compared with the camel thorns irrigated with contrasting water, the camel thorns treated by the method of the invention reduce the water consumption by 30%, and th...

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Abstract

The invention relates to a method for controlling desertification by adopting a novel biological material and discloses a method for controlling desertification by adopting a novel biological material gamma-polyglutamic acid (PGA). The method comprises the step of spraying a gamma-PGA aqueous solution onto the surfaces of the roots of desert plants 1-10 times, wherein the concentration of the PGA aqueous solution is 0.5-10%. The method has the following beneficial effects: on the one hand, the loose sand soil is adhered into block structures by virtue of gamma-PGA, thus controlling the flowability of the sand soil in the deserts and playing a good role of stabilizing the sand; and on the other hand, the super-strong water retention and absorption of gamma-PGA is utilized to spontaneously form hydrogel by absorbing water poured manually and condensed dew formed at night, thus achieving the effect of moisture slow release and meeting the basic moisture demands of the plant seedlings with undeveloped root systems; and by combining the two hands, the transpiration and infiltration of the plant moisture can be furthest reduced and the soil environment in the deserts can be improved while the growth of the xerophytes in the deserts is promoted, thus finally achieving the effect of converting the sand into forests.

Description

technical field [0001] The invention relates to a desert treatment process, in particular to a method for treating deserts with a novel biological material γ-polyglutamic acid, and belongs to the technical field of desert control. Background technique [0002] γ-polyglutamic acid [γ-ployglutamic acid, abbreviated as γ-PGA] is a copolymerized polymer with glutamic acid as the only monomer. γ-PGA was first discovered in 1937. The researchers found γ-PGA in the cell capsules of Bacillus anthracis and Bacillus mesentericus, and it is one of the main components of certain microbial capsules. Polyglutamic acid belongs to polyester polymer and is a new type of fully biodegradable polymer material. Biodegradable materials refer to polymer substances that are degraded by natural microorganisms (bacteria, fungi, etc.). The degradation product of this kind of material is non-toxic and harmless, and will not cause secondary pollution to the environment. In recent years, the developme...

Claims

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Application Information

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IPC IPC(8): E02D3/12C09K17/00
Inventor 乔长昇楼鹏钟海蛟张帅李雪
Owner 天津北洋百川生物技术有限公司
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