Method for reducing soil heavy metal cadmium and lead pollution by planting edible amaranth

A heavy metal and lead pollution technology, applied in the field of environmental governance, can solve problems that affect the repair ability, achieve the effects of shortening the repair time, alleviating the harsh environment, and good soil fixation effect

Inactive Publication Date: 2017-08-22
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When plants are attacked by pests and diseases, their ability to repair is also affected

Method used

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  • Method for reducing soil heavy metal cadmium and lead pollution by planting edible amaranth

Examples

Experimental program
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Effect test

Embodiment 1

[0020] A method for repairing heavy metal-contaminated soil with artificial amaranth seeds according to the present invention, the realization steps are as follows:

[0021] Mix humic acid fertilizer, straw fertilizer, and fish bone meal in a weight ratio of 2:1:1, spread evenly on the ground of heavy metal polluted soil, and plow 20cm deep;

[0022] sowing:

[0023] Preparation of artificial seeds: when the amaranth seeds grow to cotyledon embryos, take out the cotyledon embryos from the culture medium, inoculate them aseptically on the cotyledon embryo growth medium and cultivate them; the pH of the cotyledon embryo growth medium is 5.8, and the composition is MS+ LKT0.3mg / L+NAA2.2mg / L+glutamic acid 500mg / L+angelica extract 0.25mg / L+3.0%brown sugar+0.8%agar, angelica extract is the extract of angelica; Light is the light source, at a light intensity of 35μmol·m -2 ·s -1 Under the condition of light for 14h; the sterile artificial endosperm and CaCl 2 The solutions we...

Embodiment 2

[0029] A method for repairing heavy metal-contaminated soil with artificial amaranth seeds according to the present invention, the realization steps are as follows:

[0030] Mix humic acid fertilizer, straw fertilizer, and fish bone meal in a weight ratio of 2:1:1, spread evenly on the ground of heavy metal-contaminated soil, and plow 20-25cm deep;

[0031] sowing:

[0032] Preparation of artificial seeds: when the amaranth seeds grow to cotyledon embryos, take out the cotyledon embryos from the culture medium, inoculate them aseptically on the cotyledon embryo growth medium and cultivate them; the pH of the cotyledon embryo growth medium is 5.8, and the composition is MS+ LKT0.3mg / L+NAA2.2mg / L+glutamic acid 500mg / L+angelica extract 0.2-0.4mg / L+3.0%brown sugar+0.8%agar, angelica extract is the extract of angelica; LED red light as the light source, at a light intensity of 35μmol·m -2 ·s -1 Under the condition of light for 14h; the sterile artificial endosperm and CaCl ...

Embodiment 3

[0038] A method for repairing heavy metal-contaminated soil with artificial amaranth seeds according to the present invention, the realization steps are as follows:

[0039] Mix humic acid fertilizer, straw fertilizer, and fish bone meal in a weight ratio of 2:1:1, spread evenly on the ground of heavy metal polluted soil, and plow 20cm deep;

[0040] sowing:

[0041] Preparation of artificial seeds: when the amaranth seeds grow to cotyledon embryos, take out the cotyledon embryos from the culture medium, inoculate them aseptically on the cotyledon embryo growth medium and cultivate them; the pH of the cotyledon embryo growth medium is 5.8, and the composition is MS+ LKT0.3mg / L+NAA2.2mg / L+glutamic acid 500mg / L+angelica extract 0.2mg / L+3.0%brown sugar+0.8%agar, angelica extract is the extract of angelica; Light is the light source, at a light intensity of 35μmol·m -2 ·s -1 Under the condition of light for 14h; the sterile artificial endosperm and CaCl 2 The solutions wer...

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Abstract

The invention discloses a method for reducing soil heavy metal cadmium and lead pollution by planting edible amaranth. According to the method, heavy metal in soil is absorbed and enriched by root systems and big leaves of the edible amaranth, the edible amaranth plants have the good landscape effect and soil fixation effect and are especially suitable for soil restoration for the two sides of a highway, heavy metal cadmium and lead containing product production and use enterprises and key polluted sites containing cadmium and lead waste and the like, the two effects of soil restoration and environmental beautification are achieved, and if the content of the heavy metal in the soil is higher and exceeds the tolerance capability of the plants, the plants cannot be utilized for restoring the soil. Accordingly, by means of the phenomenon that for artificial seeds, a nutrient solution suitable for leaf embryo, callus and the like is added into seed embedding fluid artificially to relatively relieve the severe environment of plant growth, the stock of the edible amaranth plants can achieve the polluted soil bioremediation effect conveniently.

Description

technical field [0001] The invention belongs to the field of environmental treatment, and relates to a method for repairing heavy metal-contaminated soil by using amaranth plants with high heavy metal enrichment efficiency, in particular to a method for reducing soil heavy metal cadmium and lead pollution by planting amaranth. Background technique [0002] In recent years, with the rapid growth of population and the rapid development of industry and agriculture, human activities have caused a large amount of heavy metal pollutants to enter the soil environment, resulting in increasingly serious soil heavy metal pollution. The deterioration of heavy metal pollution is a serious threat to national health, and the frequent occurrence of various pollution incidents has aroused strong concerns from all walks of life. The whole world spends a lot of manpower and financial resources every year to control soil heavy metal pollution. In recent years, phytoremediation technology, as a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01H4/00B09C1/10
CPCA01B79/02A01H4/001A01H4/005A01H4/006B09C1/105
Inventor 苏品马文月张亚黄璜廖石榴曹海佳黄尧廖晓兰
Owner HUNAN AGRICULTURAL UNIV
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