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Compound agent for improving heavy metal absorption and transferring capacity of plants and preparation method and application of compound agent

A compound agent and heavy metal technology, which is applied in botany equipment and methods, plant growth regulators, plant growth regulators, etc., can solve the problems of restricting the development and popularization of phytoremediation, low biomass of heavy metal super-accumulated plants, and soil purification. Long time and other issues, to achieve the effect of promoting absorption and transport capacity, facilitating harvesting and enrichment, and simple application methods

Active Publication Date: 2018-10-26
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, heavy metal hyperaccumulators generally have defects such as small biomass, low growth rate, and long time for soil purification, which limits the development and application of phytoremediation.

Method used

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  • Compound agent for improving heavy metal absorption and transferring capacity of plants and preparation method and application of compound agent
  • Compound agent for improving heavy metal absorption and transferring capacity of plants and preparation method and application of compound agent
  • Compound agent for improving heavy metal absorption and transferring capacity of plants and preparation method and application of compound agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The test materials were cultivated in the light cultivation greenhouse of the laboratory, and the material cultivation and processing were as follows:

[0036] (1) 30 tall fescue (kind is No. 5 hunting dogs, the following examples are the same) seeds are sown in the cave box that length, width and height are respectively 10cm, 10cm, 8cm, the matrix in the cave box is by volume ratio pearl Rock: Vermiculite = 1:1. Under controllable conditions in the greenhouse (day and night temperatures are 24°C and 22°C respectively; light intensity is 300μmol / (m 2 ·s 1 ); the photoperiod is 14 hours of light and 10 hours of darkness), pouring 1 / 2 Hoagland nutrient solution and culturing for nearly 1 month until tall fescue seedlings grow.

[0037] (2) Transfer 12 medium-tall fescue seedlings from (1) into a 250-mL conical flask (wrapped in tinfoil to avoid light) filled with 300 mL 1 / 2 Hoagland nutrient solution and adapt for about 10 days until new roots grow.

[0038] (3) The ne...

Embodiment 2

[0046] Material cultivation and processing Steps (1) and (2) are the same as in Example 1.

[0047] Embodiment 2 carries out under the hydroponic environment of the 1 / 2 Hoagland nutrient solution that initial cadmium concentration is 20mg / L (cadmium solution uses CdCl 2 2.5H 2 (2 preparation), two treatments are set in the test: control group (do not use any hormone) and hormone compound drug treatment (0.5mg / L abscisic acid and 1.5mmol / L salicylic acid compound treatment), each process carries out 4 repetitions, After five days of treatment, the results were averaged. After five days, rinse first, then dry the aboveground part at 60-70°C to constant weight, cut it into pieces, mix evenly, and take 0.3g (when calculating the cadmium content, take the mass after drying to constant weight as the denominator) , respectively add 8mL nitric acid-hydrogen peroxide (obtained by mixing 65wt% nitric acid and 30wt% hydrogen peroxide according to the volume ratio of 3:1) for microwave ...

Embodiment 3

[0052] Material cultivation and processing Steps (1) and (2) are the same as in Example 1.

[0053] Embodiment 3 carries out under the hydroponic environment of the 1 / 2 Hoagland nutrient solution that initial cadmium concentration is 20mg / L (cadmium solution uses CdCl 2 2.5H 2 (2 preparation), two treatments are set in the test: control group (do not use any hormone) and hormone compound drug treatment (0.5mg / L abscisic acid and 0.5mmol / L salicylic acid compound treatment), each process carries out 4 repetitions, After five days of treatment, the results were averaged. After five days, rinse first, then dry the aboveground part at 60-70°C to constant weight, cut it into pieces, mix evenly, and take 0.3g (when calculating the cadmium content, take the mass after drying to constant weight as the denominator) , respectively add 8mL nitric acid-hydrogen peroxide (obtained by mixing 65wt% nitric acid and 30wt% hydrogen peroxide according to the volume ratio of 3:1) for microwave ...

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Abstract

The invention belongs to the field of remediation of environmental heavy metal pollution, and particularly discloses a compound agent for improving the heavy metal absorption and transferring capacityof plants and a preparation method and application of the compound agent. The composite agent is suitable for various kinds of soil or water bodies polluted by heavy metal. The composite agent comprises abscisic acid hormones and salicylic acid, abscisic acid hormones and salicylic acid are applied to the polluted soil or the water bodies where the plants are planted at the same time so that theabsorption and transferring capacity of the plants to the heavy metal can be effectively promoted, the transfer coefficient to the overground part is improved, harvesting and enrichment are facilitated, and the compound agent has wide application prospects.

Description

technical field [0001] The invention belongs to the field of remediation of environmental heavy metal pollution, and in particular relates to a compound agent for improving the ability of plants to absorb and transport heavy metals, as well as its preparation method and application. The compound agent is suitable for various soils or water bodies polluted by heavy metals. Background technique [0002] With the rapid development of modern science and technology and economy, the discharge of industrial "three wastes", sewage irrigation, agricultural sludge, long-term unreasonable application of pesticides and chemical fertilizers have caused serious water and soil heavy metal pollution, and become a widespread concern problem. In particular, with regard to soil pollution, in April 2014, the Ministry of Environmental Protection and the Ministry of Land and Resources jointly issued the first national soil pollution survey bulletin. The bulletin pointed out that the overall stat...

Claims

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Application Information

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IPC IPC(8): B09C1/00A01N37/42A01N37/40A01P21/00C02F3/32C02F101/20
CPCA01N37/40A01N37/42B09C1/105C02F3/32C02F2101/20
Inventor 陈柯祝慧慧孙杰牛宏
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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