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Treatment method of economic crops interplanting leguminous plants to remediate heavy metal polluted soil

A technology for economic crops and polluted soil, applied in the field of soil phytoremediation, can solve the problems of single crop rotation form and unbalanced soil nutrient consumption, and achieve the effect of reducing application, balancing soil nutrients, and high beneficial components

Active Publication Date: 2021-07-09
湖南新九方科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The various repair methods mentioned above use the crop rotation of two kinds of crops with the ability to absorb and enrich the soil to repair the soil. The crop rotation form is relatively simple, and it is easy to cause unbalanced soil nutrient consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: For mild heavy metal cadmium pollution of paddy land.

[0025] 1. Plant oil sunflower according to the conventional method.

[0026] The planting time is in early and mid-May. Before planting, apply organic fertilizer according to the conventional amount, and do a good job in field management, fertilizer and water management, and pest control. In mid-September, the back of the oil sunflower disk turns yellow, the stems turn yellow, and when the middle and upper leaves turn green and turn yellow, they reach physiological maturity and are harvested.

[0027] 2. Interplant soybeans according to conventional methods.

[0028] During the oil sunflower planting period, soybeans were interplanted and sowed at the same time as the oil sunflower. After maturity, the soybean stalks are harvested, and the roots are reserved for plowing into the soil for fertilizer.

[0029] 3. After the oil sunflower is harvested, continue to plow the land, and plant rapeseed accordi...

Embodiment 2

[0040] Example 2: Moderately heavy metal cadmium, lead and arsenic compound polluted dry land.

[0041] 1. Plant corn according to the conventional method first, and interplant soybeans during the period.

[0042] 2. Plant rapeseed according to the conventional method, during which milk vetch is routinely interplanted.

[0043] 3. Plant oil decane according to conventional methods, during which soybeans are routinely interplanted.

[0044] Fourth, plant rapeseed according to the conventional method, during which milk vetch is routinely interplanted.

[0045] 5. Plant sorghum according to conventional methods, and interplant soybeans during the period.

[0046] Sixth, plant rapeseed according to conventional methods, during which milk vetch is routinely interplanted.

[0047] 7. Then plant oil decane according to the conventional method, during which soybeans are routinely interplanted.

[0048] 8. Finally, rapeseed was planted according to conventional methods, during whic...

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Abstract

The invention relates to a treatment method for repairing heavy metal-contaminated soil by interplanting leguminous plants with economic crops. The economic crops planted by the method are oil sunflower, corn, sorghum, and rape. Rapeseed, sorghum-rape is planted in rotation, and leguminous plants are interplanted with conventional cultivation methods during the planting period of sunflower-rape, corn-rape and sorghum-rape respectively. The invention adopts the method of rotating multiple crops and the same crop to restore the soil, which breaks the existing single mode of rotation of two crops, and reasonably matches the crops of each rotation according to the heavy metal pollution of the soil to be repaired. The purpose of heavy metal polluted soil, but also can effectively balance soil nutrients. At the same time, legumes are interplanted, and they are restored synergistically and used as green manure to ensure that the repaired soil has high beneficial components. This restoration method can also produce considerable economic benefits and double benefits while planting plants to repair the soil.

Description

technical field [0001] The invention relates to the field of phytoremediation of soil, in particular to a treatment method for interplanting leguminous plants of economic crops to remediate heavy metal polluted soil. Background technique [0002] With the continuous deterioration of the ecological environment, industrial or domestic pollution, the problem of soil environmental pollution caused by metals is becoming more and more serious. As a large agricultural country in my country, the arable land environment plays a decisive role. Cultivated land is used as a breeding base for crops. In order to ensure food security, most of the cultivated land is far away from industrial areas and mining areas, so it generally does not produce heavy metal pollution. However, due to improper control of the discharge of domestic wastewater, waste gas, and waste residues, it will still cause medium and light pollution of cultivated land, especially cadmium pollution is more easily absorbed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00
CPCB09C1/105B09C2101/00
Inventor 纪智慧贺志勇成一知王英杰谭刘圆靳菁王伟杨添奇
Owner 湖南新九方科技有限公司
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