Application of celosia cristata in remediation of cadmium-contaminated soil

Abstract

The invention relates to application of celosia cristata belonging to the Amaranthaceae in remediation of Cd contaminated soil. Annual ornamental flower plant celosia cristata which is large in biomass, easy to breed and short in life cycle is planted on the Cd contaminated soil, and a large amount of Cd in the contaminated soil is absorbed and transferred through the celosia cristata. After the plants grow mature, the plants are harvested, the heavy metal Cd element in the soil is removed, the harvested plants are transported to the flower market to be sold, a new crop of celosia cristata are planted, and the operation is repeated, so that remediation of the cadmium-contaminated soil is achieved. By adopting the phytoremediation method for the Cd contaminated soil, the environment can be beautified, Cd cannot enter the food chain after the contaminated soil is planted, and the application has the advantages of economic value, no influence on physical and chemical properties of the soil and the like.

Description

technical field [0001] The invention relates to the application of phoenix-tailed cockscomb in repairing cadmium-contaminated soil, and belongs to the field of phytoremediation of polluted soil. Background technique [0002] Soil heavy metal pollution has become an important factor restricting the sustainable development of agriculture and endangering human health and food safety. Due to the high mobility, high toxicity and extensive pollution of Cd, Cd has become one of the priority pollutants to be controlled in my country. The continuous accumulation of Cd in the soil poses serious risks to human health. There are many ways to repair Cd-contaminated soil. Compared with traditional soil pollution control technologies such as physics and chemistry, phytoremediation technology is low in cost, can maintain soil fertility, and has no secondary pollution. Pollution and other advantages, has broad application prospects. At present, most of the heavy metal hyperaccumulator plan...

AI Technical Summary

Problems solved by technology

At present, most of the heavy metal hyperaccumulator plants that have been discovered in the world, such as centipede grass and Mirabilis, are less planted in actual polluted soil because they do not have economic value and ornamental value, and the acceptance level of farmers is low.

Flowers, as a characteristic resource for key development, have not been fully utilized in the restoration and reconstruction of the ecological environment

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