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Method for improving cadmium-contaminated soil remediation capability of grafted offspring of bidens pilosa

A technology of cadmium-contaminated soil and ghost needle grass, which is applied in the field of soil remediation, can solve the problem of low remediation ability of cadmium-contaminated soil, and achieve the effect of improving remediation ability and increasing cadmium accumulation

Inactive Publication Date: 2018-06-01
HEXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ghost needle grass is a cadmium hyperaccumulator plant, which can be used as a remediation of cadmium-contaminated soil, but there is still very little information on how to further improve its remediation ability to cadmium-contaminated soil

Method used

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  • Method for improving cadmium-contaminated soil remediation capability of grafted offspring of bidens pilosa
  • Method for improving cadmium-contaminated soil remediation capability of grafted offspring of bidens pilosa
  • Method for improving cadmium-contaminated soil remediation capability of grafted offspring of bidens pilosa

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Embodiment 1

[0022] 1 Materials and methods

[0023] 1.1 Material collection

[0024] In September 2013, one plant with mature fruit was collected from the Tangjiashan lead-zinc mine (mine ecological type) in Hanyuan County, Ya'an City, Sichuan Province and the Ya'an campus farm of Sichuan Agricultural University (farmland ecological type). A kind of ecological type of ghost needle grass seeds, air-dried and preserved.

[0025] Tangjiashan lead-zinc mine (29°24′ north latitude, 102°38′ east longitude) is located in Tangjia Township, Hanyuan County, Ya’an City, Sichuan Province, with an average altitude of 890m. It belongs to the mountainous subtropical climate zone between the northern temperate zone and the monsoon zone. The dry-hot valley has climate characteristics, with the annual average temperature of 17.9°C, the annual average rainfall of 741.8mm, the annual average sunshine of 1475.8h, and the annual average evaporation of 1248.2mm.

[0026] Sichuan Agricultural University Ya’an ...

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Abstract

The invention provides a method for improving cadmium-contaminated soil remediation capability of grafted offspring of bidens pilosa. The method comprises the steps of selecting one kind of mine ecological bidens pilosa and farmland ecological bidens pilosa as rootstocks and the other kind as scions, and conducting grafting, wherein mine ecological bidens pilosa is bidens pilosa growing in lead-zinc mine areas, and farmland ecological bidens pilosa is bidens pilosa growing in farmlands. By means of the method, the cadmium accumulation amount of the grafted offspring of bidens pilosa is significantly increased, and the cadmium-contaminated soil remediation capability of the grafted offspring of bidens pilosa is improved.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a method for improving the remediation ability of diospinatus to cadmium-contaminated soil. Background technique [0002] With the development of the economy, industrial pollution, farmland irrigation, agricultural materials and other factors have caused heavy metal pollution to the soil, especially cadmium pollution. According to reports, the area of ​​cadmium-contaminated soil in China has reached 1.4×10 4 hm 2 , and cadmium can accumulate through soil-crop migration, thereby affecting the safety of agricultural products and even human health. Therefore, the treatment of cadmium-contaminated soil has become an urgent matter. [0003] Phytoremediation is a polluted environment cleaning technology developed in the early twentieth century, and its most representative remediation technology mainly refers to the removal of heavy metals in polluted environment...

Claims

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Application Information

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IPC IPC(8): A01G2/30
Inventor 张芬琴王小明曾秀存关天霞许耀照李红艳林立金廖明安
Owner HEXI UNIV
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