Method for relieving plant growth resistance under stress of high-concentration rare earth elements and application

A technology for plant growth and rare earth elements, applied in the field of soil remediation, can solve problems such as growth retardation, and achieve the effects of alleviating plant growth retardation, reducing treatment costs, and reducing rare earth element content

Active Publication Date: 2022-03-18
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that crop growth is hindered under the condition of high-concentration rare earth elements, the present invention provides a method for alleviating the growth obstruction of plants under the stress of high-concentration rare earth elements. Method By applying a certain concentration of carbon quantum dot solution in the process of plant growth, the inhibitory effect of high-concentration rare earth elements on plant growth can be effectively alleviated, and at the same time, it will not significantly affect the absorption and enrichment of rare earth elements in the soil by plants, thereby reducing the excessive concentration of rare earth elements in the soil. enrichment effect

Method used

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  • Method for relieving plant growth resistance under stress of high-concentration rare earth elements and application
  • Method for relieving plant growth resistance under stress of high-concentration rare earth elements and application
  • Method for relieving plant growth resistance under stress of high-concentration rare earth elements and application

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Effect test

Embodiment 1

[0033] A method for alleviating the stunted growth of plants under the stress of high-concentration rare earth elements, the method comprising:

[0034] (1) Add lanthanum chloride to the liquid medium (water or Hoagland's nutrient solution), so that the La in the liquid medium 3+ reach a certain concentration;

[0035] (2) Soak the germinated seeds or roots of seedlings in the liquid medium of step (1) for cultivation, and at the same time apply a carbon quantum dot solution with a concentration of 0.005-0.05 mg / ml to the liquid medium.

[0036] (3) After culturing for 5-6 days, take out and measure the total length of the seedling plant and the total length of the root system.

Embodiment 2

[0038] This embodiment verifies that the carbon quantum dot solution treatment has an effect on mung bean plant La 3+ content impact.

[0039]Forty-eight mung bean seeds with similar size, plump grains and no obvious damage were randomly divided into 3 groups, 16 seeds in each group, numbered 1, 2 and 3. The three groups of seeds were cultured in liquid medium (Hoagland's nutrient solution). The liquid medium of the first group had no redundant additives, and the liquid medium of the second group was supplemented with 0.01 mg / ml CDs and 30 μmol / L La 3+ , the liquid culture medium of the third group was supplemented with a concentration of 30 μmol / L La 3+ .

[0040] After continuous cultivation for 6 days, the roots of the second group of mung bean seedlings were sliced ​​and observed, and the results were as follows: figure 1 shown. The roots, stems and leaves of the three groups of mung bean seedlings were tested by ICP-AES 3+ Concentration detection, statistics of La in...

Embodiment 3

[0044] This example verifies the effect of carbon quantum dot solution treatment on the growth of mung bean plants

[0045] Sixty-four mung bean seeds with similar size, plump grains and no obvious damage were randomly divided into 4 groups, with 16 seeds in each group, numbered 1-4. Four groups of mung bean seeds were cultured in liquid medium (Hoagland's nutrient solution). The liquid medium of the first group had no redundant additives, the liquid medium of the second group was added with CDs at a concentration of 0.01mg / ml, and the liquid medium of the third group was The medium was supplemented with a concentration of 30 μmol / L La 3+ (lanthanum oxide), the liquid culture medium of group 4 was supplemented with concentration 0.01mg / ml CDs and 30μmol / L La at the same time 3+ .

[0046] After continuously cultivating for 5 days, measure and count the plant full-length average value and root system total length average value of each group of plants, the results are as follo...

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Abstract

The invention provides a method for relieving plant growth resistance under stress of high-concentration rare earth elements, and belongs to the technical field of soil remediation, and the method comprises the step of applying a carbon quantum dot solution with the concentration of 0.005-0.05 mg / ml to plants in the plant growth process. According to the method, a carbon quantum dot solution with a certain concentration is applied in the plant growth process, the inhibiting effect of high-concentration rare earth elements on plant growth is effectively relieved, meanwhile, absorption and enrichment of the plants on the soil rare earth elements are not remarkably affected, and then the effect of reducing excessive enrichment of the rare earth elements in the soil is achieved. The invention further provides application of the method for relieving plant growth resistance under stress of the high-concentration rare earth elements in relieving soil pollution caused by the rare earth elements.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a method and an application for alleviating the hindered growth of plants under the stress of high-concentration rare earth elements. Background technique [0002] Rare earth elements are 15 lanthanide elements in the periodic table of chemical elements and 17 elements that are closely related to them (yttrium and scandium). They are widely used in electronics, petrochemicals, metallurgy, machinery, energy, and light industry. , environmental protection, agriculture and other fields. In the field of agricultural production, low-concentration rare earth elements have shown the effects of promoting crop yield, quality improvement, stress resistance and disease resistance. It is called "super calcium". The history of the use of rare earth fertilizers in my country has been nearly 40 years. [0003] However, the massive mining and smelting of rare earth minerals...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G7/06A01C1/00A01G22/40A01G22/20B09C1/10
CPCA01G7/06A01C1/00A01G22/40A01G22/20B09C1/105
Inventor 徐莺刘曦南北唐琳白洁
Owner SICHUAN UNIV
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