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A method for reducing the content of heavy metals in corn kernels by hybrid seedlings of corn hybrids

A heavy metal and corn technology, which is applied in the field of plant heavy metal pollution restoration, can solve the problem that the repair effect is not up to the ideal level, not diverse, etc., and achieve outstanding repair effect, good repair effect, and obvious reduction effect

Inactive Publication Date: 2020-09-29
SICHUAN AGRI UNIV
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AI Technical Summary

Problems solved by technology

[0005] There have been research reports on the method of using mixed species to remediate heavy metal pollution in corn planting soil, but the cadmium content in corn is still higher than the national standard value in the current remediation method
There are still different methods of hybrid restoration, and the restoration effect has not yet reached the ideal level

Method used

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  • A method for reducing the content of heavy metals in corn kernels by hybrid seedlings of corn hybrids
  • A method for reducing the content of heavy metals in corn kernels by hybrid seedlings of corn hybrids
  • A method for reducing the content of heavy metals in corn kernels by hybrid seedlings of corn hybrids

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Experimental program
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Effect test

Embodiment 1

[0020] (1) Soil of the test site:

[0021] This experiment was carried out on a cadmium-contaminated farmland in Ya'an, Sichuan. The pH value of the farmland soil was 5.57, and the organic matter was 43.37g kg -1 , total nitrogen 2.34g·kg -1 , total phosphorus 0.71g·kg -1 , available potassium 26.68g·kg -1 , the heavy metal cadmium content in farmland reached 5.73mg·kg -1 .

[0022] (2) Breeding of hybrid offspring:

[0023] The seeds of the mining ecological type Achyranthes chrysanthemum were taken from the Tangjia lead-zinc mine in Hanyuan County, Ya'an City, Sichuan Province, and the seeds of the farmland ecological type Achyranthes chrysanthemum were taken from the farm of Ya'an Campus of Sichuan Agricultural University. In a (diameter×height) plastic pot, the soil used for the test was taken from the farm of Ya'an Campus of Sichuan Agricultural University, and the soil of the farm was not polluted by cadmium. Start hybridization at the full flowering stage, and the...

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Abstract

The invention provides a method for reducing the content of heavy metal in corn kernels during corn hybrid offspring interbreeding and belongs to the technical field of plant heavy metal pollution remediation. According to the method, hybrid offspring obtained by hybridizing ecological galinsoga parviflora of two types is interbred with corn, so that the content of cadmium in the corn kernels canbe reduced; and farmland ecological galinsoga parviflo and mine ecological galinsoga parviflo are adopted as the hybridizing ecological galinsoga parviflora of two types. When the above method provided by the invention is adopted for corn culture, an obvious reducing effect on the content of heavy metal cadmium in all parts of the corn can be achieved, and heavy metal cadmium absorbing capacity ofthe galinsoga parviflo hybrid offspring can be remarkably improved; compared with those of other interbreeding methods, the remediation effect of the method is more outstanding and the progress of the method is more significant; and the method is applicable to agricultural production and capable of achieving a good remediation effect on the pollution of heavy metal cadmium in soil and plants.

Description

technical field [0001] The invention belongs to the technical field of remediation of plant heavy metal pollution, and in particular relates to a method for reducing the content of heavy metals in corn grains by mixing corn hybrid offspring. Background technique [0002] With the development of the world economy and the increase of population, human activities are becoming more and more frequent, soil, as a natural resource for human survival, is becoming more and more overwhelmed, and its pollution and damage have become increasingly serious. Due to the increasing discharge of heavy metals in production activities, the excessive content of heavy metals in the soil has become an important environmental problem faced by human beings. Due to their high toxicity, refractory degradation, and easy accumulation, heavy metals can be enriched in organisms, causing soil and crop pollution. , have greater harm to the growth and quality of crops, and after being absorbed and enriched b...

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 张素芝李乙弘李洪杰丁舰周杜含梅周丽娜赵卓屈敏王宁刘婵
Owner SICHUAN AGRI UNIV
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