How to control pesticide residues in Chinese herbal medicines

Pesticide is sprayed into crops or soil. After a period of time, most of it has disappeared due to light, natural degradation, rain forest, high temperature volatilization, microbial decomposition and plant metabolism, but there are traces of pesticide residues. Residual pesticides are not effective against diseases, insects and weeds, but they are harmful to people who are directly or indirectly used to treat diseases. In the case of the continuous use of pesticides and the use of pesticides, controlling pesticide residues and ensuring the safety and health of humans and animals has become a problem that needs to be solved. So how do you maximize the control of pesticide residues?

1. Rational use of pesticides should be based on the nature of pesticides, the occurrence and development of pests and diseases, dialectically apply pesticides, and strive to obtain the maximum control effect with the least amount. Reasonable medication should generally pay attention to the following problems: 1. Symptomatic medication, master the key period of medication and the most effective application method; 2. Pay attention to the concentration and dosage of medication, master the correct application rate; 3. Improve pesticide performance, Such as the addition of surfactants to improve the performance of the liquid; 4. Rational mix of pesticides.

2. Safe use of pesticides According to the "Chinese Medicine Production Quality Management Regulations", "Pesticide Safety Use Regulations", "Pesticide Safety Use Standards" and other regulations, prevention and prevention. In particular, high-toxic, high-residue pesticides should not be used on Chinese herbal medicines, and pesticides must be applied at safe intervals.

3. Taking anti-virus measures In areas where pesticides are seriously polluted, crops that are easy to absorb pesticides are not planted for a certain period of time, and new varieties of disease-resistant and insect-resistant crops can be cultivated to reduce the application of pesticides.

4. Comprehensive prevention and control Actively carry out agricultural prevention and control, biological control, and implement reasonable rotation and cropping of crops. Actively develop high-efficiency, low-toxic, low-residue pesticide varieties, and ban the use of eliminated pesticide varieties.

5. Master the harvest period and eliminate the harvest and sale of Chinese herbal medicines during the safety interval. Because of the different speeds of decomposition and disappearance of various medicines, the growth trend and season of the medicines are different, so there are different safety intervals. The farther the medicine is from the last spraying time, the better.

6. Decontamination treatment The pesticides remaining on the surface of crops and fruits and vegetables can be decontaminated. Pesticide residue contamination can also be reduced or eliminated by methods such as exposure and cleaning.
Huaxian County Economics Station Lu Shuguang