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1. Highly toxic pesticides. The usual varieties are 3911, methyl 1605, 1059, monocrotophos, methamidophos, carbofuran, sodium cyanide, potassium cyanide and the like. When they are used in Chinese medicinal materials, they are easily absorbed and infiltrated into plant tissues such as roots, leaves and peels, and are not easily scattered and disappeared even if they are blown by the wind. Often, the harvest period of Chinese medicinal materials is approaching, and some pesticide components have not been degraded. It is very prone to acute poisoning after processing and use, and it is easy to cause human and animal poisoning accidents when applying such pesticides. Therefore, it is forbidden to use it in the production of Chinese herbal medicines.
2. High residual pesticides. Such as 666, DDT, chlordane and so on. Although they are not very toxic to humans and animals, they have a long residual period and strong accumulation. They are more difficult to decompose in Chinese medicinal materials. After entering the human body, they will accumulate chronic poisoning for a long time. Therefore, it is also prohibited to apply Chinese herbal medicines.
3. Organic mercury pesticides. Such as Sai Li San, Xi Li Sheng, Fu Min Long, etc., such pesticides have strong bactericidal power, and the effect of controlling Chinese herbal medicines is very good, but it will be decomposed into inorganic mercury, which can remain for many years without disappearing. The damage to the nervous system and heart is very large, so the country has long banned production and use.
4. Kill insects. Experimental studies have shown that a very small dose of insecticide can induce multiple cancers in mice. Therefore, the state has stipulated that it is not allowed to use insecticides on Chinese herbal medicines, fruit trees, vegetables and tea.
Pesticides banned on Chinese herbal medicines
At present, farmers are increasingly growing Chinese herbal medicines. Proper selection of pesticides to control pests and diseases is a key measure to improve the quality of medicinal materials. According to national regulations, the following pesticides are prohibited from being used on Chinese herbal medicines:
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