Method for improving bidens pilosa cadmium pollution repairing capability

A cloverleaf and pollution remediation technology is applied in the field of improving the cadmium pollution remediation capability of plants, and can solve problems affecting grain yield, crop growth threats, etc., so as to increase green remediation pathways, improve cadmium enrichment capacity, and improve absorption efficiency. Effect

Inactive Publication Date: 2018-09-14
SICHUAN AGRI UNIV
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Problems solved by technology

In addition, soil heavy metal cadmium pollution has the characteristics of concealment, long-term and irreve

Method used

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  • Method for improving bidens pilosa cadmium pollution repairing capability

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Embodiment Construction

[0016] 1 Materials and methods

[0017] 1.1 Test material

[0018] Plants to be tested: the mine-type P. trifoliate was taken from the Tangjia lead-zinc mining area (North latitude: 29°24′, E: 102°38′), and the farm-type P. trifoliate was obtained from the farm of Ya’an Campus of Sichuan Agricultural University ( North latitude 30°23', east longitude 103°48'), and different ecotypes of P. trifoliate seeds were collected for the preliminary experiment.

[0019] 1.2 Test method

[0020] The seeds of different ecotypes of P. trifoliate were sown in the purple soil (cadmium was not detected) in the farmland of Ya'an Campus of Sichuan Agricultural University for seedling cultivation. After air-drying, crushing, and passing through a 5mm sieve, weigh 3.0kg and put them in plastic basins of 15cm×18cm (height×diameter), add analytically pure CdCl 2 2.5H 2 O solution, so that its cadmium concentration is 10mg / kg, and fully mix with the soil, keep the flooded state, naturally place ...

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Abstract

The invention relates to the field of crop cadmium pollution repairing capability improving, in particular to a method for improving the bidens pilosa cadmium pollution repairing capability. The method comprises the step that 25 mg/L of uniconazole (S-3307) is used for being sprayed to bidens pilosa leaf surfaces. According to the provided method capable of improving the bidens pilosa cadmium pollution repairing capability, the cadmium accumulation amount of the bidens pilosa can be effectively guaranteed, and the bidens pilosa cadmium enriching capability is obviously improved. According to the provided method, the content of the cadmium adsorbed by the whole bidens pilosa is obviously improved to 411.64+/-8.07-552.25+/-9.04 ug/plant; and compared with a control group, the absorption efficiency is improved by 11.1%-41.93%, accordingly the production requirement is met, and the green repairing paths of heavy metal polluted soil in China are increased.

Description

technical field [0001] The invention relates to the field of improving the ability of repairing cadmium pollution of plants, in particular to a method for improving the ability of repairing cadmium pollution of P. trifoliate. Background technique [0002] The total excess rate of heavy metals in cultivated land soil in my country is 19.4%, among which the point excess rate of cadmium is 7.0%, ranking first in my country's soil pollutants. According to reports, the area of ​​farmland polluted by cadmium in my country has reached 2x10 4 hm 2 , and tends to deteriorate gradually. In addition, soil heavy metal cadmium pollution has the characteristics of concealment, long-term and irreversibility, which will pose a threat to the growth of crops and seriously affect my country's grain production. [0003] At present, the more common soil heavy metal remediation method is to use cadmium hyperaccumulator plants for green remediation. Its mechanism is mainly through the absorpti...

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Application Information

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IPC IPC(8): B09C1/10
CPCB09C1/105B09C2101/00
Inventor 黄科文刘飘李欣欣夏丹廖明安林立金吕秀兰王进邓群仙
Owner SICHUAN AGRI UNIV
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