Sedum plumbizincicola multi-harvest and cadmium-polluted soil remediation method

A technology of cadmium-contaminated soil and sedum with ore, which is applied in the fields of joint restoration of environmental pollution, sedum with ore planting and soil restoration, can solve the problem of limiting the restoration efficiency of sedum with ore and increasing the time and economic cost of soil restoration To achieve the effect of reducing labor cost of weeding, improving land utilization rate and improving restoration efficiency

Inactive Publication Date: 2021-08-31
HUNAN INST OF AGRI ENVIRONMENT & ECOLOGY
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  • Application Information

AI Technical Summary

Problems solved by technology

A restoration project requires continuous cultivation and harvesting of three to five seasons of Sedum sedum stalks, so three to five batches of Sedum sedum seedlings need to be cultivated and 3 to 5 years of restoration time is required, which greatly limits the restoration efficiency of Sedum sedum. Increased time and economic cost of soil remediation

Method used

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  • Sedum plumbizincicola multi-harvest and cadmium-polluted soil remediation method
  • Sedum plumbizincicola multi-harvest and cadmium-polluted soil remediation method
  • Sedum plumbizincicola multi-harvest and cadmium-polluted soil remediation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041](1) Land preparation and ridging: Apply 30kg / mu ternary compound fertilizer as the base fertilizer after harvesting the late rice of the current season, plow the ground and dry the field for a week at the end of October, and rid the field with a height of 15-20cm, a width of 120cm, and a furrow width of 20cm to reduce the soil in the field The water content is below 40%, which is convenient for ditching and ridge formation, and at the same time avoids the influence of mechanization or simplified cultivation of Sedum sedum due to too wet soil.

[0042] (2) Reasonable interplanting: first plant Sedum sedum and then plant and sow Bermudagrass. In about November, select strong seedlings with a plant height of 12 cm or more and leave two 30 cm gaps in the middle of the ridge, and each gap is evenly cultivated for 2 Row companion Sedum sedum seedlings, the row and plant spacing of seedlings are both 10cm, a total of about 19,000 Sedum sedum seedlings are needed per mu of land, ...

experiment example 1

[0050] Taking Example 1 as the treatment group, the control group CK is to only plant Sedum sedum with the same cultivation density and management method, and compare whether the net removal efficiency of cadmium and Sedum with sedum can safely pass through the summer under the two cultivation methods. High temperature and strong light weather.

[0051] A heavily polluted cadmium area in Hunan was selected for the test, and the soil cadmium background value was 2.34mg / kg. Plant Sedum sedum seedlings in November of the first year, harvest sedum sedum straw of the first season in March of the following year; harvest sedum sedum straw of the second season in May of the following year; Tianping survived the summer and grew vigorously again in autumn, while the control group CK completely died under the high temperature and strong light in summer in July. The specific straw biomass and restoration efficiency data of the two methods are compared in Table 1.

[0052] Table 1: The am...

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Abstract

The invention provides a sedum plumbizincicola multi-harvest and cadmium-polluted soil remediation method. According to the method, sedum plumbizincicola and cynodon dactylon are interplanted. The sedum plumbizincicola and the cynodon dactylon are reasonably interplanted, efficient remediation and reasonable cutting measures are taken, the technical effect that the sedum plumbizincicola is harvested in one time can be achieved in a one-time cultivation mode, meanwhile, high-quality cynodon dactylon turf cultivation is achieved in the soil remediation process, and the produced turf can be sold after remediation is completed; and economic benefits are created, and the soil remediation time and economic cost are greatly saved. Compared with an original cadmium-polluted soil remediation technical scheme, the method improves the remediation efficiency by 3-5 times, and reduces the remediation cost by 3 times or more.

Description

technical field [0001] The present invention relates to the technical field of Sedum sedum planting and soil remediation, relates to the technical field of multi-tech joint restoration of environmental pollution, and specifically relates to a method of continuously repairing cadmium-contaminated soil throughout the year by interplanting sedum with sedum and bermudagrass to realize sedum with sedum God is a way to overcharge. Background technique [0002] Phytoremediation of cadmium pollution refers to the main use of plants to absorb, fix, and transfer pollutants in the soil, and achieve the purpose of purifying the soil through centralized treatment. Sedum sedum is a perennial herb with strong cadmium enrichment ability. It grows fast, and the cadmium and sulfur content in the aboveground part can reach more than 100 times that in the soil. It is an ideal material for the remediation of cadmium-contaminated soil. However, because Sedum sedum will die when it encounters hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10
CPCB09C1/105
Inventor 陈锦贺爱国戴艳娇蒋慧丹
Owner HUNAN INST OF AGRI ENVIRONMENT & ECOLOGY
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