Method for repairing heavy metal contaminated soil by Chinese yews

Abstract

The invention discloses a method for repairing heavy metal contaminated soil by Chinese yews. The method includes the step: planting the Chinese yews into the heavy metal contaminated soil for cultivation to finish repairing the heavy metal contaminated soil. The method for repairing the heavy metal contaminated soil by the Chinese yews has the advantages of simplicity in operation, low cost, higheconomic benefit, good repairing effect and the like, and solves the problems that plants in an existing heavy metal contaminated soil repairing technology are low in biomass, less in absorbed and accumulated heavy metal total amount, poor in enrichment capacity and economic benefit, complex in plant field management, high in management cost and little in practical application comprehensive effect and only has resistance to single heavy metals. Regardless of ecological point of view and economic point of view, the method has vital practical significance.

Description

technical field [0001] The invention belongs to the technical field of phytoremediation of polluted environment, and relates to a method for remediating heavy metal polluted soil by using yew. Background technique [0002] Soil is the basis for the development and survival of human activities, and it is also one of the most basic natural resources for social development. However, due to the development of industry and unreasonable human activities, as well as the development and utilization of a large number of mineral resources, and the widespread use of various chemical products, pesticides and fertilizers in industry, heavy metal pollutants enter through the atmosphere, water environment, etc. Soil, and heavy metal pollutants have the following hazards: they cannot be chemically or biologically degraded, easily accumulate in plants, animals and humans through the food chain, and are highly toxic, posing a serious threat to the ecological environment, food safety and human...

AI Technical Summary

Problems solved by technology

However, the plants used in the existing phytoremediation technology have the following problems: limited by the season, the growth condition is poor; the biomass of the aboveground part is low; the total amount of heavy metals absorbed and accumulated is small; The plants can only be incinerated, have no reuse value, poor economic benefits, and poor comprehensive effects in practical applications. These problems seriously limit the wide application of phytoremediation technology in remediating heavy metal-contaminated soils.

In addition, yew is a rare and natural anti-cancer plant. Paclitaxel extracted from its plant is a broad-spectrum, low-toxicity and high-efficiency anti-cancer drug recognized worldwide. There are no reports on the use of yew to repair heavy metal soils

Images