Agricultural method for recovering cadmium pollution farmland soil

A cadmium pollution and soil technology, which is applied in the field of polluted environment remediation, can solve the problems of increasing diseases and insect pests, declining biomass, and inability to continuously remove heavy metals from soil for a long time, and achieves the effect of strong super-enrichment ability and complete removal.

Inactive Publication Date: 2011-04-06
SHENYANG UNIV
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AI Technical Summary

Problems solved by technology

However, the current phytoremediation research mainly adopts the continuous planting of a single restoration plant. In fact, the continuous planting of a single restoration plant will cause continuous cropping obstacles such as a decrease in biomass and an increase in pests and diseases, and cannot continuously remove heavy metals in the soil for a long time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Demonstration and research in a cadmium pollution farmland in the Zhang Shi polluting area of Shenyang in the western part of Shenyang. The initial content of cadmium in the soil is 3.08 mg / kg, which is 10.3 times that of the national soil environmental quality.10 4 Milligram / kg.The agricultural method of repairing cadmium pollution of farmland soil is:

[0013] 1. Dragon sunflower's repair of cadmium pollution soil: Dragon sunflower seedling seedlings were performed on April 25. The specific method is to build a plastic shed of 3 meters, 1.5 meters wide and 1.5 meters on the cadmium repair venue, and sprinkle the dragon sunflower seeds evenly in the seedbed.The top 1-1.5 cm thick soil is used for seedlings.Out of seedlings on May 15th, transplanting and planting on May 30 when the plant is 15-20 cm high. Before transplanting, use a small agricultural rotor to cultivate the soil cultivation of 0-30 cm in depth.For 30 cm, the density of dragon sunflower planting is row spaci...

Embodiment 2

[0020] Demonstration and research in a cadmium pollution farmland in the Zhang Shi polluting area of Shenyang in the western part.× 10 4 Milligram / kg.The agricultural method of repairing cadmium pollution of farmland soil is:

[0021] 1. Dragon sunflower's repair of cadmium pollution soil: Dragon sunflower seedling seedlings were performed on April 25. The specific method is to build a plastic shed of 3 meters, 1.5 meters wide and 1.5 meters on the cadmium repair venue, and sprinkle the dragon sunflower seeds evenly in the seedbed.The top 1-1.5 cm thick soil is used for seedlings.Out of seedlings on May 15th, transplanting and planting on May 30 when the plant is 15-20 cm high. Before transplanting, use a small agricultural rotor to cultivate the soil cultivation of 0-30 cm in depth.For 30 cm, the density of dragon sunflower planting is row spacing × plant spacing = 30 cm × 25 cm. On the day of the dragon sunflower transplantation, the water gap was permeable to ensure the surviva...

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PUM

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Abstract

The invention relates to an agricultural method for recovering cadmium pollution farmland soil, comprising the following steps of: 1. recovering the cadmium pollution soil by nightshades; 2. recovering the cadmium pollution soil by Beta vulgaris var.cicla L, wherein the asarum exact of the invention has the advantages of high efficiency and low residual and is harmonious with the environment and other living beings; and 3. testing the total cadmium removal amount of the nightshade plants and Beta vulgaris var.cicla L plants. The invention not only can continuously remove heavy metals in the soil for a long time but also can ensure that the biomass is not reduced and prevents plant diseases and insect pests from increasing.

Description

Technical field [0001] The present invention involves the field of pollution environmental restoration technology, especially an agronomy method for repairing cadmium pollution of farmland soil. Background technique [0002] Due to human activities such as mineral development, sewage irrigation, sludge agricultural, pesticide fertilizers, etc., the world's current soil heavy metal pollution is increasingly serious.The problem of heavy metal pollution in my country's soil is becoming increasingly serious. According to statistics, the soil area of ​​heavy metal pollution in my country is about 20 million hectares. Direct economic losses to reduce production and pollution of food by soil pollution each year reached more than 20 billion yuan.Among them, heavy metal cadmium has been widely used in electroplating, automobiles, aviation, paint, paint, printing and other industries, increasing opportunities for environmental pollution. According to statistics, the area of ​​cadmium pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
Inventor 宋雪英宋玉芳胡晓钧李玉双侯永侠杨继松
Owner SHENYANG UNIV
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