What are the safe ways to use pyrethroid pesticides?

In addition to having low residues and a certain control effect on pests, pyrethroid pesticides have a good control effect on mites and underground pests. The use of pyrethroid pesticides, due to the large use of pyrethroid pesticides, will cause a variety of pests to develop a certain resistance. Therefore, when pyrethroid pesticides are used, pyrethroid fever should be effectively prevented and the application should be strictly controlled.

dose and frequency; Repeated use of pyrethroid pesticides can develop some resistance to pests. According to the survey, pyrethroid pesticides can only be used 2-3 times during the growth period, and each time they are used according to the instructions. <>

When pyrethroid pesticides are used, other pesticides should be used alternately, which is more conducive to reducing the frequency of pyrethroid pesticides and preventing pests from developing resistance. After testing, it can be combined with insect poison insecticides and agricultural specials; with organophosphorus pesticides monocrotophos, phosphine, dimethoate, quinafs, hydrocarbon phosphorus; It is used in rotation with carbamate pesticides, leafhopper powder, methocarb and other pesticides. <

Pyrethroid insecticides are a broad-spectrum insecticide that controls a wide range of pests. Its insecticidal effect is comparable to that of traditional insecticides such as organophosphorus and organochlorine. 10 to 100 times more effective.

The principle of action of pyrethroid insecticides is to disrupt the normal physiological function of the nerves of pests, so that pests die due to abnormal excitement, convulsions, and paralysis. In addition, due to the small dosage and relatively low application concentration of this type of drug, it is relatively small to humans and animals, and the pollution to the environment and ecology is relatively small. The disadvantage of this type of agent is that it is very toxic to aquatic organisms such as fish, and it cannot be used correctly to select natural enemies, and there is no systemic absorption.

Pyrethroids are usually much more effective at killing pests than the insecticides we commonly use, and they are faster and have a stronger knockdown ability. Another point is that it is broad-spectrum, and the agent has an effect on a variety of tobacco pests, including stinging and chewing mouthparts. <>

The dosage and frequency of application should be strictly controlled, and other pesticides should be reasonably alternated when using pyrethroid pesticides, and agricultural personnel should wear masks when using pyrethroid pesticides. Avoid contamination of powders and liquids** and eyes. Wash your hands, face, etc. after spraying.

When using, you must choose the right pesticide and the right dosage according to the crop, and you should also wear a mask, gloves and protective clothing, don't use too much at one time, and don't use it in hot weather or rainy weather.

It can be used with other pesticides, with other drugs, with other fertilizers, with pesticides, and with water, these are all ways to use pesticides.

You must not use well water, stay away from water sources, pay attention to the time of use, pay attention to the outside temperature, and also pay attention to the frequency of spraying.

When using, you must pay attention to the amount, and you must pay attention to the time of spraying, you must choose when the temperature is more suitable, you must not choose in rainy days or when the temperature is relatively high, and you must pay attention to dilution with water, and you can also use several pesticides at the same time.

In the process of use, we must pay attention to safety, avoid contact with **, wear protective clothing during use, be sure to choose a good time, avoid heavy rain or windy weather, and avoid volatilization.

First of all, we must pay attention to the principle of proportioning, when proportioning, we must stay away from water sources, we must wear protective clothing, protect our own **, we must use it immediately after the proportion, and we must put it in a cool and ventilated place when storing.

You can understand the specific effect of this pesticide, and also pay attention to the virus of the main ** of this pesticide, and then use it according to the instructions for use.

This kind of pesticide should be formulated according to the proportion, so that the pesticide can play the best effect, so that it can be used more reasonably, and it can also play a role.

It needs to be selected according to the actual situation, and it needs to be used in accordance with the scientific ratio, and it must be used cautiously according to the specific situation.

It's best not to spray cypermethrin at home. Cypermethrin is a highly effective, broad-spectrum insecticide that pests and has a contact killing effect. However, it is best not to spray at home, and indoor spraying generally takes about ten days to become ineffective.

Spraying at home is very harmful to human health. If you are a pest in your home, you can choose a medicine that can be sprayed indoors. Cypermethrin is a pesticide and is used in plots.

And pay attention to the method when using it to avoid drug damage.

Attention should be paid to the use of cypermethrin:

1. The main mixture of cyhalothrin is 37% perchlorine horse emulsifiable concentrate, 26% dichlorvos perchlorine emulsifiable concentrate, 20% perchlorine hydroamine emulsifiable concentrate, and 1% avi perchlorine emulsifiable concentrate. Cypermethrin should not be mixed with alkaline pesticides. The safe interval for cypermethrin is 10-15 days before harvest.

2. The combination of cypermethrin and avermectin can effectively increase the efficacy. Cypermethrin is a flammable substance, so be sure to keep it away from fire! Cyhalothrin cannot be mixed with alkaline pesticides to avoid decomposition and failure.

Pay attention to the crop safety interval for leafy vegetables for 7 days, tomatoes for 5 days, apples for 30 days, citrus and peach for 15 days, and tea for 15 days. Cyhalothrin cannot be used in rice fields.

Commonly used pyrethroid pesticide varieties are: deltamethrin, cypermethrin, permethrin, methrin, methrin, etc., most of which are medium and low toxicity pesticides, which are relatively safe for humans and animals, but the safety operation procedures cannot be ignored, otherwise it will also cause poisoning. This type of pesticide is a nerve agent, acting on the nerve membrane, which can change the permeability of the nerve membrane, interfere with nerve conduction and produce poisoning.

But this type of pesticide is found in mammals.

Liver enzymes can be hydrolyzed and oxidized, and most metabolites can be quickly excreted from the body.

1) Symptoms of poisoning.

Symptoms of oral poisoning. A mild symptom of oral poisoning is headache.

Dizziness, nausea and vomiting, burning pain in the upper abdomen, fatigue, loss of appetite, chest tightness, salivation, etc. In addition to the above symptoms, the symptoms of moderate poisoning include hazy consciousness, increased secretions from the mouth, nose and trachea, tremors of the hands, muscle beating, and irregular heartbeat.

I felt some difficulty breathing. Severe symptoms include dyspnea, cyanosis, vesicles in the lungs, paroxysmal convulsions or convulsions of the limbs, loss of consciousness, and in severe cases, deep coma or shock, and in critical cases, repeated tonic convulsions causing laryngeal spasm and suffocation.

Symptoms of percutaneous poisoning. **Redness, spiciness, itchiness, numbness, and severe rash.

Blisters, erosions. After the eye is invaded by pesticides, it shows conjunctival hyperemia, pain, photophobia, tearing, and red and swollen eyelids.

2) First aid: For patients with oral poisoning, vomiting and gastric lavage should be induced immediately. Those who are poisoned should be immediately rinsed with soap and water, dermatitis.

Calamine lotion or 2% 3% boric acid water can be used for wet compresses; Eyes contaminated with pesticides should be rinsed with plenty of water or normal saline, and chlorpheniramine and diphenhydramine should be taken orally.