Plant in situ restoring method of cadmium polluted soil
A cadmium-contaminated soil and in-situ restoration technology, applied in the direction of soil lifting machinery, fertilizer mixture, organic fertilizer, etc., can solve problems such as difficult to carry out large-scale polluted soil, soil structure damage, soil activity decline, etc., and achieve good social benefits , beautify the environment, the effect of small amount of work
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0015] Sedum southeast was transplanted in soils with different levels of cadmium pollution, and nitrogen, phosphorus and potassium fertilizers were applied, and the growth period was managed according to traditional crop management methods. The above-ground parts were harvested 4 months after transplanting. It was determined that under the pollution level of 21.0mg / kg, the dry matter yield of Sedum alfredii was 2141kg / ha, the cadmium content of the above ground was 148mg / kg, and the cadmium taken away from the soil was 0.32kg / ha, which was at 13.0mg / kg. Under the pollution level, the dry matter output of Sedum alfredii was 2586kg / ha, the cadmium content of the above ground was 153mg / kg, and the cadmium taken away from the soil was 0.39kg / ha. It can be seen that there is no significant difference in the ability to remove cadmium from the soil by Sedum in different pollution levels, and it can be applied to the remediation of soil contaminated by cadmium to different degrees.
Embodiment 2
[0017] Transplant Sedum in cadmium-contaminated soil containing 21.15 mg / kg of cadmium, harvest the above-ground parts 4 months after the first transplanting, replenish the seedlings after harvest, and perform the second harvest after 3 months and apply nitrogen, phosphorus and potassium fertilizers And organic fertilizer, during the growth period, it is managed according to traditional crop management methods. After the first harvest, the dry matter yield of Sedum alfredii was 1277kg / ha, the cadmium content of the ground was 193mg / kg, and the cadmium taken away from the soil was 0.21kg / ha. After the second harvest, the yield of Sedum southeast was 3219kg / ha, the cadmium content of the above ground was 181mg / kg, and the cadmium taken away from the soil was 0.58kg / ha. After the two harvests, the soil cadmium content changed from 21.15mg / kg to 20.37mg / kg, which is equivalent to a reduction of 3.69% of the total cadmium in the soil. After that, it will be harvested every 3 months or ...
Embodiment 3
[0019] Sedum sedum was transplanted in cadmium-contaminated soil with cadmium content of 40.3 mg / kg and different pH values. Nitrogen, phosphorus and potassium fertilizers were applied. The growth period was managed according to traditional crop management methods. The above-ground parts were harvested 4 months after transplanting. It has been determined that at a level of 5.0, the dry matter yield of Sedum sedum is 2325kg / ha, the content of cadmium above the ground is 453mg / kg, and the cadmium taken away from the soil is 1053g / ha; under the level of pH 5.5, the cadmium of Sedum sedum is 2325kg / ha. The dry matter yield is 1845kg / ha, the aboveground cadmium content is 477mg / kg, and the cadmium taken away from the soil is 880g / ha; at a pH level of 6.3, the dry matter yield of Sedum alfredii is 1635kg / ha, and the aboveground cadmium The content is 442mg / kg, and the cadmium taken away from the soil is 723g / ha. It can be seen that the cadmium removal ability of Sedum southeast is diffe...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com