The high temperature will go to the north, and the local will exceed 40 °C.
The data shows that about 90% of pesticide poisoning occurs at high temperatures from July to August.
The Central Meteorological Observatory is expected to further strengthen the high temperature intensity in the northern region from 31st to August 4th. The range will be in Inner Mongolia, northern Hebei, Beijing, Tianjin, Liaoning, Jilin and other places. The daily maximum temperature will reach 35~38°C. More than 40 ° C and will approach or exceed the historical extreme maximum temperature. According to statistics, about 90% of poisoning due to application of pesticides occurs in July-August, where the temperature is above 30 °C. The high temperature makes the body pores and sweat glands open, and the harmful components in the pesticide are more likely to penetrate into the human body through the skin, causing poisoning.
The symptoms of pesticide poisoning mainly include dizziness, headache, sweating, fatigue, vomiting, chest tightness, abdominal pain, diarrhea and other symptoms. Some people mistakenly think that it is hot and heatstroke, and rest will be good, and the result will delay the treatment. How to avoid pesticide poisoning in high temperature weather? What kind of pesticide is more suitable for summer use? For your reference.
Organophosphorus pesticides, cream formulations, spray methods, high temperature application, please try to avoid!
Yuan Huizhu, a researcher at the Institute of Plant Protection of the Chinese Academy of Agricultural Sciences, told reporters that organophosphorus pesticides were the most common cause of human poisoning in the past. Most of the organophosphorus pesticides produced in China are pesticides , such as commonly used parathion, endogenous phosphorus, and horses. In recent years, organophosphorus pesticides such as fungicides and rodenticides have been synthesized in recent years. Organophosphorus pesticides are mostly phosphates or phosphorothioates, due to their vapours. Both pressure and volatility are strong, which is easy to cause human poisoning.
There are 3 ways for pesticides to enter the human body: nasal, oral, and transdermal. Transdermal and nasal breathing are related to the volatilization temperature of the pesticide. When the temperature is high, the pores of the skin are opened, and the pesticide with high vapor pressure is easily volatilized and then enters the human body through the skin and breathing. The stronger the volatility, the more pesticides enter the human body. The side effects are also greater. In this regard, Yuan Huizhu suggested that the use of emulsifiable pesticides in high-temperature weather in summer and avoiding sprays could be replaced by other types such as granules or pouring.
In addition, in the summer, it is possible to use pesticides with strong internal habits, which have strong transpiration and strong absorption, and can exert better effects. Most pesticides are positively correlated with temperature, that is, high temperature and good efficacy, such as: imidacloprid; some pesticides are also negatively correlated with temperature, such as pyrethroid pesticides. But no matter which kind of pesticide, try to choose when the temperature is relatively low in the morning and evening, to avoid the risk.
Three ways of pesticides entering the human body causing poisoning
1. Enter the human body through the skin. Many pesticides can be dissolved in organic solvents and fats. For example, some organophosphorus pesticides can enter the body through intact skin. Especially when it is hot, the temperature is high, the skin is sweaty, the blood circulation is fast, and it is easy to absorb. Pesticides are more accessible when there is damage to the skin. A lot of sweating can also promote the absorption of pesticides.
2. Enter the body powder, fumigant and easily volatile pesticides through the respiratory tract, which can cause poisoning by inhalation from the nostrils. The fine mist droplets during spraying are suspended in the air and are easily inhaled. In the pesticides inhaled from the respiratory tract, special attention should be paid to odorless, odorless, non-irritating agents, which are more likely to be poisoned than those with special odors and irritating agents, and are easily overlooked by people. I don't feel a lot of inhalation in the body.
3. Enter the human body through the digestive tract. Various chemical pesticides can enter the human body from the digestive tract and cause poisoning. More common in accidental consumption of pesticides or eating food contaminated with pesticides. Poisoned by mouth. The pesticide dosage is generally large and difficult to completely eliminate, so the poisoning is also serious and the risk is also large.
These conditions can cause your pesticide to be poisoned! Don't take it lightly...
Preliminary preparation
1. Before spraying pesticides, choose the time for spraying pesticides, try to choose in the morning and evening, not at noon high temperature;
2. Adjust the sprayer and other tools to adjust the concentration and dosage of the agent. Wear rubber gloves, anti-virus masks and protective glasses when mixing and seed dressing;
3. Do not repair by hand when the sprayer is leaking, and do not use the mouth to blow the debris in the nozzle to avoid contaminating the skin with the pesticide or entering the body through the mouth.
Application link
1. When spraying pesticides, wear long-sleeved pants, wear a mask, do not smoke, do not eat food, do not sweat with your hands. Do not wear chemical fiber clothes, because chemical fiber clothes have strong permeability, poor water absorption, poor anti-staining ability, and are prone to infectious poisoning;
2. When spraying pesticides, it is necessary to stand on the upper air outlet to spray, and not to "wind up the wind" to prevent the wind from scraping the liquid to the body.
3. The method of application is not correct. For example, if people spray medicine to the left and right, wet the underwear; several medicines spray at the same time, and do not follow the trapezoidal advancement and the downwind side, causing mutual influence and pollution.
Follow-up
1. Do not apply the medicine for a long time. Do not work in the field soon after application.
2. After spraying the pesticide, it is necessary to change the clothes in time, wash your face with soapy water and wash your hands before eating. After washing the enemy, avoid washing your hands with soapy water and wash your hands with water.
3. The tools for spraying pesticides should be washed, and the heads should be marked.
4. Once a pesticide poisoning is found, it is best to bring a pesticide label to the hospital for treatment and treatment.
Special Note
1. Minors, lactating women, frail and sick, those with a history of allergies and those with damaged skin should not participate in spraying;
2. In the pesticide dosage form, the emulsifiable concentrate is more poisonous, the powder poisoning is rare, and the granule and the sustained release agent are safer;
3. In the application method, the poisonous soil is sprinkled, and the pouring is safer; the spray is more poisonous. The amount of pesticide contamination in the calf and palm of the applicator was confirmed to be the least, 10 times the pouring and 150 times the spray.
Summer is hot and rainy, crop pests and diseases are flourishing, mastering the following pesticides and doing more with less
Master the choice of pesticides
1. Select pesticides such as dimethoate, carbendazim, thiophanate, triadimefon, and kekening, and fungicides . After being absorbed by the crop, these pesticides can be transported to the crop periphery. After 5 hours of application, more than 80% of the active ingredients of the pesticide have been absorbed into the tissues by the crop;
2. Select quick-acting pesticides such as dichlorvos, anti-smuggling, enemy killing, pyrethroids and other pesticides, which have strong contact and poisoning effects, strong knockdown force, and play a role soon after spraying, affected by the rainy season. small.
3. Select rain-tolerant pesticides such as tricyclazole, kelican and other pesticides, and it will have some control effect when it is raining after application.
Change the application method
1. Change the emulsion to powder continuous slow rain or rain gap, change powder control;
2. Change the concentration of the drug if it is necessary to spray in the light rain, the water consumption can be 80% of the original, or increase the dosage and increase the concentration of the drug;
3. Change the spraying to the poisonous soil, mix the systemic insecticide with the fine soil and apply it to the mud layer near the root of the crop, so that the root system can be absorbed and spread the whole plant to achieve the control effect.
Liquid and adhesive
Adhesives such as washing powder, soy flour, and skin glue are added to the liquid to increase the adhesion of the pesticide to the crop.
Apply pesticides in the rain
The application of pesticides in the rain gap is the key to controlling crop pests and diseases during the rainy season. When spraying, you must pay attention to the dynamics of the weather and rush to spray in the gap after the rain.
More pesticide knowledge , please pay attention to China Pesticide Network
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