Method for enhanced extraction and repair of moderately cadmium contaminated farmland through intercropping of oilseed rape and sedum alfredii

A technology of rapeseed and farmland, applied in the field of phytoremediation of soil heavy metal pollution, can solve problems such as difficult large-scale planting, and achieve the effect of improving the modification effect, good yield level, and easy operation

Active Publication Date: 2019-07-26
ZHEJIANG UNIV
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Indian mustard has strong regional characteristics, and it is difficult to plant it in a large area in my country; it has been found

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for enhanced extraction and repair of moderately cadmium contaminated farmland through intercropping of oilseed rape and sedum alfredii
  • Method for enhanced extraction and repair of moderately cadmium contaminated farmland through intercropping of oilseed rape and sedum alfredii
  • Method for enhanced extraction and repair of moderately cadmium contaminated farmland through intercropping of oilseed rape and sedum alfredii

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] The preparation method of the endophyte I fermentation liquid is as follows: inoculate the endophyte I to be tested in a sterile LB liquid medium, cultivate it at 30°C and 200 rpm in a fermenter for 24 hours, and then dilute it with sterile water Fermentation broth to OD value of about 1.0, made into a concentration of 1 × 10 8 CFU / mL of bacterial suspension is ready for use. The components of the medium are: tryptone 10g / L, yeast extract 5g / L, sodium chloride 10g / L, pH 7.2, sterilized at 121°C for 20min.

[0037] The preparation method of the endophyte II fermentation liquid is as follows: inoculate the endophyte II to be tested in a sterile LB liquid medium, cultivate it at 30°C and 200 rpm in a fermenter for 24 hours, and then dilute it with sterile water Fermentation broth to OD value of about 1.0, made into a concentration of 1 × 10 8 CFU / mL of bacterial suspension is ready for use. The components of the medium are: tryptone 10g / L, yeast extract 5g / L, sodium chl...

Embodiment 1

[0039] 1. Test location and soil physical and chemical properties

[0040] A heavy metal-contaminated farmland in Changxing County, Huzhou City (test point A), a heavy metal-contaminated farmland in Qujiang District, Quzhou City (test point B), and a heavy metal-contaminated farmland in Ninghai County, Ningbo City (test point C) were used as test fields.

[0041] The basic physical and chemical properties and heavy metal content of the soil at each test site are shown in Table 1.

[0042] Table 1 The basic physical and chemical properties of the soil at each test point

[0043]

[0044]

[0045] 2. Test steps

[0046] (1) At the end of September of the first year, seeds of rapeseed (Lvsheng No. 1) were sown in the field next to the soil to be repaired, and seedlings were raised; in October of the first year, the herbicide glyphosate was sprayed on the soil to be repaired , and then carry out normal plowing, soil preparation, and furrows; when the rapeseed seedlings grow ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for enhanced extraction and repair of moderately cadmium contaminated farmland through intercropping of oilseed rape and sedum alfredii. The method includes transplanting the oilseed rape subjected to seedling culture into to-be-repaired soil, and in the bolting and flowering stages of the oilseed rape, applying heavy metal activators to the soil in a root region of the oilseed rape; transplanting seedlings of the sedum alfredii into to-be-repaired soil of the moderately cadmium contaminated farmland, and performing intercropping cultivation management; in theseedling and rapid growth stages of the sedum alfredii, spraying enhanced repairing agents onto leaves of the sedum alfredii; and harvesting oilseed rape plants and sedum alfredii plants. The method has the advantages that the oilseed rape and the sedum alfredii are intercropped, the heavy metal activators and the enhanced repairing agents are applied cooperatively, the absorption of cadmium in the to-be-repaired soil by the oilseed rape and the sedum alfredii is remarkably improved, and the soil repairing effect on the moderately cadmium contaminated farmland is further improved.

Description

technical field [0001] The invention relates to the technical field of phytoremediation of heavy metal pollution in soil, in particular to a method for enhancing the extraction and restoration of mildly polluted farmland in cadmium by intercropping rapeseed-sedum sedum. Background technique [0002] Phytoremediation is a method with unique advantages in technology and economy, and it is a promising remediation technology to solve the problem of heavy metal pollution in soil. However, the repair technology also has certain limitations, such as long repair period and slow effect. At this stage, there are mainly three ways to improve its purification efficiency of polluted soil: one is to screen ideal crops with high cadmium enrichment; the other is to use modern molecular engineering technology to reconstruct plants to improve their accumulation and tolerance of heavy metals in soil The third is to add growth-promoting bacteria or other strengthening measures to enhance the a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B09C1/00
CPCB09C1/105
Inventor 杨肖娥陆敏曹雪蕊王小子杨倩颖
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap