Method for prevention and control of cadmium contamination of traditional Chinese medicine rhizoma coptidis

Abstract

The invention discloses a method for prevention and control of cadmium contamination of traditional Chinese medicine rhizoma coptidis. The method includes steps: (1) performing topdressing from September to October in the current year of rhizoma coptidis planting and in May in the second, third, fourth and fifth years, and after transplanting, performing topdressing once in autumn (September-October) in the second, third and fourth year, wherein topdressing is carried out for eight times to promote growth and activity of rhizoma coptidis and lays a foundation for prevention and control of cadmium absorption; then, after topdressing in autumn (September-October) in the second, third and fourth year after transplanting in the step (1), performing earth-up operation by adopting a cadmium blocking agent, wherein a spraying quantity of the cadmium blocking agent is 75-100Kg / mu, chelation of the cadmium blocking agent with cadmium in soil is realized, cadium absorption of rhizoma coptidis isreduced, stress resistance of rhizoma coptidis is improved, the self-protection performance of rhizoma coptidis is improved, plasma membrane damages of roots and leaves under cadmium stress are reduced, antioxidant enzyme activity of the leaves under cadmium stress is improved, the antitoxic performance of rhizoma coptidis is improved, system immunity is enhanced, cadmium accumulation is inhibited, and prevention and control of cadmium contamination are realized.

Description

technical field [0001] The invention relates to the technical field of Coptis chinensis cultivation, in particular to a method for preventing and controlling cadmium pollution of Coptis chinensis, a traditional Chinese medicine. Background technique [0002] Coptis chinensis is an annual aquatic herb that blooms from July to August and bears fruit from August to September. Its fruit is used in traditional Chinese medicine to invigorate the spleen, kidney and astringent essence. At present, heavy metal pollution in the environment is becoming more and more serious, and cadmium is the first inorganic pollutant. , the absorption of cadmium in the growth of Coptis chinensis will lead to growth retardation, lower yield and lower quality, which will affect the medicinal ingredients and effects, and after eating, cadmium will enter the human body and endanger human health. Therefore, measures need to be taken to prevent the absorption of cadmium by Coptis chinensis. However, The pH...

AI Technical Summary

Problems solved by technology

[0002] Coptis chinensis is an annual aquatic herb that blooms from July to August and bears fruit from August to September. Its fruit is used in traditional Chinese medicine to invigorate the spleen, kidney, and astringent essence. At present, heavy metal pollution in the environment is becoming more and more serious, and cadmium is the first inorganic pollutant. , the absorption of cadmium in the growth of Coptis chinensis will lead to growth retardation, lower yield and lower quality, which will affect the medicinal ingredients and effects, and after eating, cadmium will enter the human body and endanger human health. Therefore, measures need to be taken to prevent the absorption of cadmium by Coptis chinensis. However, The pH value of the optimal production environment for Coptis chinensis is 5.5-6.5, and the pH value needs to be increased to prevent the absorption of cadmium, which will affect the growth of Coptis chinensis. Therefore, we propose a method to prevent and control the pollution of cadmium in Chinese medicine Coptis chinensis to solve the above problems