Method for reducing content of cadmium (Cd) in edible parts of eggplant crops

Abstract

The invention belongs to the field of safe utilization of polluted soil, and particularly relates to a method for reducing the content of cadmium (Cd) in edible parts of eggplant crops. Solanum torvum is used as stocks, the eggplant crops are used as scions for grafting, and then the content of cadmium (Cd) in the edible parts of the eggplant crops is reduced. Compared with scion self-rooted crops, the cadmium content reduction rate of edible parts of grafted eggplant crops taking the wild Solanum torvum as the stocks can reach 50%-80%, and the quality and yield of the crops are not affected. The grafting technology is applied to prevention and control of heavy metal enrichment of agricultural products, and a new way is provided for safe and efficient utilization of large-area heavy metal polluted farmlands.

Description

technical field [0001] The invention belongs to the field of safe utilization of polluted soil, and in particular relates to a method for reducing cadmium (Cd) content in edible parts of nightshade crops. Background technique [0002] Heavy metal pollution is a serious environmental problem at present, especially Cd pollution in farmland soil, which leads to excessive cadmium content and quality decline in a large number of agricultural products. In view of the country's red line protection policy for cultivated land and the pressure of food security, it is impossible to change all the polluted cultivated land to other uses. It can be predicted that for a long period of time, the disposal policy of polluted farmland soil will still be to "go to work with a disease" and continue to use it for agriculture. [0003] At present, the commonly used remediation methods for heavy metal pollution in farmland soil, such as physical methods (such as guest soil), chemical methods (such...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used remediation methods for heavy metal pollution in farmland soil, such as physical methods (such as guest soil), chemical methods (such as chemical fixation or leaching) or biological methods (such as hyperaccumulation phytoremediation), have more or less limitations and deficiencies. : The cost of physical and chemical methods is high, and the environment is greatly disturbed; the cycle of biological restoration is long, which affects normal agricultural production

However, which crops interact with each other is not predictable

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