What are the precautions for using pesticides?

Pesticides are mainly used to control agricultural pests and urban health pests. It has a long history of use, large dosage and many varieties. Spraying, powder spraying, heart filling and aircraft spraying can be used. Either way, it is necessary to spread pesticides evenly to ensure that pests have a chance to eat them, so as to play a toxic role. Now I'd like to introduce you to the use of pesticides, hoping to help farmers.

The correct way to use pesticides is to spray them directly at pests, or close the doors and windows and spray them indoors in all directions, so that the room will be covered with drug fog, mosquitoes, flies and other flying insects will die within a few minutes, and then open the doors and windows to get enough ventilation before entering the room. For reptiles such as cockroaches, it is necessary to spray aerosol evenly where they haunt, stay or inhabit.

Insecticides are less toxic, even if sprayed on plates or stoves. It can be washed repeatedly with clean water. Don't clean the stove repeatedly. Pesticides can usually be removed. Cleaning with insecticidal water is very effective.

We often use organophosphorus pesticides, such as dichlorvos, dimethoate and pyrethroids, which have low toxicity. If you spray dichlorvos, I suggest you throw away your chopsticks and change them again. It is suggested that if it is a pyrethroid insecticide, you can soak the chopsticks in 3% sodium carbonate solution for about 30 minutes and rinse them clean. Spray pesticides in the future and pay attention to putting away the dishes and chopsticks.

Fenvalerate: The application should be even and thoughtful. Acaricide should be used in combination with crops with pests and mites. Pests such as aphids and cotton bollworms are prone to develop resistance to this drug, so try to mix and use it alternately when using it. Can be mixed with non-alkaline pesticides, but not with alkaline pesticides. It is highly toxic to bees, fish, shrimp and poultry.

For the above external pesticides with certain restrictions, it is best to use them under the guidance of professionals, and it is forbidden to use them indiscriminately.

The use of pesticides has gone through several stages: natural pesticides and inorganic compounds were first discovered, but their effects were single, their dosage was large and their duration was short; Organic synthetic pesticides such as organochlorine, organophosphorus and carbamate have the characteristics of high efficiency, high residue or low residue, and many of them have high acute toxicity to mammals.