Method for reducing content of heavy metal in corn kernels during corn hybrid offspring interbreeding

A heavy metal and corn technology, which is applied in the field of plant heavy metal pollution repair, can solve the problems of invariance and repair effect not reaching the ideal level, and achieve good repair effect, outstanding repair effect and obvious effect

Inactive Publication Date: 2018-10-26
SICHUAN AGRI UNIV
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  • Application Information

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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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  • Method for reducing content of heavy metal in corn kernels during corn hybrid offspring interbreeding
  • Method for reducing content of heavy metal in corn kernels during corn hybrid offspring interbreeding
  • Method for reducing content of heavy metal in corn kernels during corn hybrid offspring interbreeding

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Experimental program
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Embodiment 1

[0020] (1) Test site soil:

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

[0022] (2) Cultivation of hybrid offspring:

[0023] The ecological Achyranthes bidentata seeds were taken from the Tangjia lead-zinc mine in Hanyuan County, Ya'an City, Sichuan Province. The ecological Achyranthes bidentata seeds were taken from the farm on the Ya'an campus of Sichuan Agricultural University. The collected Achyranthes bidentata seeds were sown in 21cm×20cm. In the (diameter×height) plastic basin, the test soil was taken from the farm on the Ya'an campus of Sichuan Agricultural University, and the farm’s soil was not contaminated by cadmium. Start hybridization in the full bloom period, and the proces...

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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 plant heavy metal pollution remediation, and specifically relates to a method for reducing heavy metal content in corn grains by mixed corn hybrid progeny. Background technique [0002] With the development of the world economy and the increase of population, human activities have become more frequent. Soil as a natural resource on which humans depend for survival has become more and more overwhelmed, and its pollution and destruction have become more and more 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 facing human beings. Heavy metals can accumulate in organisms due to their high toxicity, difficulty in degradation, and easy accumulation, causing soil and crop pollution , It is a great hazard to the growth and quality of crops. After being absorbed and enriched by crops and e...

Claims

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Application Information

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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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