After pesticides are sprayed on crops or soil, most of them have disappeared due to light, natural degradation, rain, high-temperature volatilization, microbial decomposition, and plant metabolism, but there will be traces of pesticide residues. Residue pesticides are not effective against diseases, insects and weeds, but they can cause harm to humans and animals and beneficial organisms. With the continuous expansion of the scope and use of pesticides, controlling pesticide residues and ensuring human and animal safety and health have become problems that need to be resolved. So, how to maximize the control of pesticide residues? First, the rational use of pesticides should be based on the nature of pesticides, the occurrence and development of pests and weeds, the dialectical application of pesticides, and strive to obtain the greatest control effect with the least amount. Rational use of drugs should generally pay attention to the following issues: 1, symptomatic medication, to grasp the key period of drug use and the most effective method of application; 2, pay attention to the concentration and dosage of medication, to master the correct dosage; 3, improve the performance of pesticides, Such as adding surfactants to improve the performance of the liquid; 4, a reasonable mix of pesticides. Second, the safe use of pesticides should strictly abide by the "Pesticide Safety Regulations", "Pesticide Safety Standards" and other provisions, mainly prevention, comprehensive control. High-toxic and high-residual pesticides shall not be used for crops such as fruit trees, vegetables, Chinese herbal medicines, tobacco, etc. It is prohibited to use pesticide poisons to kill fish, shrimps, frogs and beneficial birds and beasts. The application of pesticides must be carried out within a safe interval. Third, to take anti-drug measures in the areas subject to more serious pesticide pollution, a certain period of time not to plant easily absorbable pesticide crops, can be cultivated new varieties of disease-resistant, insect-resistant crops, reducing the application of pesticides. IV. Comprehensive prevention and control Actively carry out agricultural prevention and control, biological control, and implement reasonable rotation and dumping of crops. 5. Actively develop high-efficiency, low-toxic, low-residue pesticides and prohibit the use of obsolete pesticides. 6. It is not allowed to harvest and use cultivated crops during the safe interval of harvest. Because various pesticides have different rates of decomposition and disappearance, crop growth trends and seasons are also different. Therefore, there are different safety intervals. The longer the harvest time is, the better the final spraying time is. VII. Decontamination Treatment Decontamination of pesticide residues on the surfaces of crops, fruits and vegetables may be carried out. For example, through exposure, cleaning, etc., it can also reduce or remove pesticide residue contamination.
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