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Method for remarkably enhancing capacity of starwort for restoring orchard cadmium-polluted soil

A cadmium-contaminated soil and a cadmium-contaminated technology, applied in the field of phytoremediation, can solve problems such as low extraction rate of cadmium per plant, and achieve the effects of enhancing removal ability, increasing cadmium accumulation, and reducing damage

Inactive Publication Date: 2016-10-12
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with other cadmium hyperaccumulators or enrichment plants, the extraction rate of cadmium per plant in Chickweed is relatively low

Method used

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  • Method for remarkably enhancing capacity of starwort for restoring orchard cadmium-polluted soil
  • Method for remarkably enhancing capacity of starwort for restoring orchard cadmium-polluted soil
  • Method for remarkably enhancing capacity of starwort for restoring orchard cadmium-polluted soil

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Experimental program
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Embodiment 1

[0018] 1 Materials and methods

[0019] 1.1 Reagent materials

[0020] Chickweed seedlings were taken from the farmland of Sichuan Agricultural University Ya'an Campus. Cuttings of chickweed branches about 10cm long collected from the same plant were cut in moist river sand, and covered with plastic film to keep moisture. After the roots grow (one week), transplanting is carried out, and the plastic film is uncovered one day before transplanting to harden the seedlings.

[0021] The soil is taken from the farm orchard of Ya'an Campus of Sichuan Agricultural University. It is purple soil. Its basic physical and chemical properties are: pH 6.94, organic matter 43.64g / kg, total nitrogen 3.63g / kg, total phosphorus 0.38g / kg, and total potassium 17.54g / kg , full cadmium 1.03 x 10 -4 g / kg, alkaline hydrolysis nitrogen 0.195g / kg, available phosphorus 6.25×10 -3 g / kg, available potassium 0.191g / kg, available cadmium 2.20×10 -5 g / kg.

[0022] Gibberellin (GA 3 ) was purchased fro...

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Abstract

The invention provides a method for significantly enhancing the ability of chickweed to repair cadmium-contaminated soil in an orchard. The method comprises the following steps: transplanting the rooted chickweed into the soil of a cadmium-contaminated orchard, watering it every day, and after 30 days, watering it to the cadmium-contaminated soil Spray gibberellin at a concentration of 5-20mg / L. The invention can significantly increase the cadmium accumulation of the chickweed, and the increase rate of the cadmium accumulation of the whole plant can be as high as 25.51%.

Description

technical field [0001] The invention belongs to the field of phytoremediation, and in particular relates to a method for significantly enhancing the ability of chickweed to repair cadmium-contaminated soil in orchards. Background technique [0002] Chickweed is an annual or perennial herb of Caryophyllaceae. It has a long growth period, strong branching and fecundity, and is widely distributed. It has been found to have a certain cadmium enrichment ability in recent years. However, compared with other cadmium hyperaccumulators or enrichment plants, the extraction rate of cadmium per plant in chickweed was relatively low. How to improve its ability to extract cadmium has become a key technical issue whether it can be applied to cadmium restoration applications. Contents of the invention [0003] For the shortcoming of prior art, the object of the present invention is to provide a kind of method that significantly strengthens chickweed to the remediation ability of orchard ...

Claims

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Application Information

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IPC IPC(8): B09C1/10
CPCB09C1/105
Inventor 廖明安林立金刘春阳郑书聆冉致余雪娜谢永东温铿钟程操黄佳璟
Owner SICHUAN AGRI UNIV
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