What are the effects of spraying pesticides on vegetables?

Preamble: If vegetables are sprayed with pesticides, if they are in accordance with the regulations, then there will be no impact on the human body. If you say that the body is poisoned after eating vegetables sprayed with pesticides, then you must go to the hospital in time**. Nowadays, they are all low-toxicity, high-efficiency or biologics.

When spraying pesticides, pay attention to the spray, its spray eye should be small, and if the eye is large, it should be replaced in time. For the spray with small eyes, it can spray fine matter, so as to increase the amount of medicine on the plant and ensure the control effect. If the spray eye is too large, then the sprayed potion will be difficult to bear, and I will have to stay on the ground more, which will reduce the efficacy.

It is recommended to change the spray in time for urine, and you can't use only one spray for a year. Of course, we can also make the spray sheet ourselves, take a thin piece of hard plastic and cut it into the size of the spray piece, and then use a red-hot needle to prick it. <>

Spraying pesticides is only one of the control measures, which cannot be completely relied on, and should be combined with other control measures. When spraying pesticides, spray on the back of the leaves of vegetables, because pests and diseases mostly occur on the back of the leaves, and many of them enter through the stomata on the back of the leaves. After spraying the back, the purpose of spraying pesticides has basically been achieved.

For pest and disease disasters, we should have the idea of early detection and early detection. <>

Pesticides can kill pests, but they also have an impact on the environment. Don't try to kill pesticides when spraying them. In the control of vegetable pests and diseases, control pests and diseases by spraying, to avoid causing a large area of economic losses, if you want to completely eliminate these pests and diseases, you will increase the dosage, the consequences of this will make the pests mutate and produce resistance.

The ecology will also have a certain impact as a result, the environment will be polluted, and the ultimate loss will be human beings.

Vegetable spraying pesticides will have many adverse effects, because as we all know, pesticides will have some toxicity and residues more or less, so spraying on vegetables will be absorbed by vegetables, if people often eat a large number of pesticides sprayed vegetables will cause chronic poisoning, damage to the stomach, kidneys, liver, or relatively large harm to health, so it is recommended to eat farm vegetables, or organic vegetables as well!

Spraying pesticides on vegetables is very harmful to the human body, and if people do not wash them when cooking, pesticides will enter the human body.

Vegetable spraying pesticides will more or less have some toxicity and residual substances, so sprayed on vegetables will be absorbed by vegetables, if people often eat a large number of pesticides sprayed vegetables will cause chronic poisoning.

If you want vegetables to grow well, spraying pesticides is essential, but how to spray pesticides scientifically when not damaging vegetables? Take a look at my views below.

With the national policy, the production of pollution-free vegetables has put forward stricter standards for pesticide residues, and the technology of farmers to use pesticides scientifically has also increased. First, correctly understand pests and pesticides, so as to prescribe the right medicine and not damage crops. There are many kinds of diseases and insects in vegetables, first of all, we must know what disease vegetables have, or what pests they have, so that we can better choose the corresponding pesticides, prescribe the right medicine, in order to give full play to the role of pesticides, and achieve scientific application.

The second point is the correct application technique, spraying the spray should be even, spray the front and back of the leaves, because a large part of the pests are on the back of the leaves, so that the prevention effect can be achieved, as well as the sanitizing effect.

Mastering the critical period of medication and applying pesticides at the appropriate medication period can not only get twice the result with half the effort, but also reduce the number of medication and reduce the probability of damage to vegetables. Master the mixed and rotating use of pesticides. The mixed use of a variety of pesticides can significantly improve the prevention effect, but only a reasonable combination can achieve the intended purpose, more than two kinds, or a variety of mixed use, the use does not correspond, there will be certain damage to vegetables, so it is necessary to reasonably configure according to the biological characteristics or chemical structure of the active ingredients of pesticides.

Get the most out of mixing and rotating use.

Scientific use of pesticides should be based on the soil of vegetables to carry out a reasonable match, some pesticides will decompose under acidic conditions, and some pesticides can not be used with the soil containing metals, with the new varieties of pesticides continue to enter the pesticide market, the use of pesticides is more complicated, so when using pesticides to carefully understand the nature of pesticides, when necessary to consult relevant books, to achieve rational use, scientific use, reduce damage to crops.

The above are my methods and techniques for spraying pesticides on vegetables scientifically.

First of all, we should prescribe the right medicine, choose the right pesticide, pay attention to the proportion and dosage of pesticides, when using pesticides, we must do a good job of personal protection, wear protective clothing, avoid contact, and be sure to spray pesticides on sunny days, try to avoid rainy days or windy weather, otherwise it will affect the effect of pesticides.

First of all, it is necessary to choose the right time, try to choose at 10 o'clock in the morning, and then when using pesticides, we must choose the right concentration and suitable pesticides according to the crops, and we must do a good job of personal protection and wear protective clothing.

Fertilization should be done regularly, and it should not be repeated, and the density and method of fertilization should be ensured.

If you eat vegetables with pesticide residues, you don't have to go to the hospital if you don't have symptoms; If you experience abdominal pain, diarrhea, vomiting, chest tightness and other poisoning symptoms, please seek medical attention immediately.

Before eating vegetables, the following methods can be used to reduce pesticide residues:

1. Rinse and soak in water: Most pesticides are acidic, as long as you use slightly alkaline rice washing water and detergent, you can remove most of the pesticides. Note that during the washing process, do not knead the vegetable leaves, so as not to cause secondary pollution of the inside of the vegetable leaves.

Since most pesticides are water-soluble and mostly attached to the surface of vegetables, as long as they are cleaned well, the pesticides on the surface can be washed off. Usually the surface is washed with water before soaking (no less than 10 minutes). Repeat this procedure 2 to 3 times, and most of the pesticides can be removed.

2. Peel off the outer leaves: Many vegetables have the most pesticides attached to the outermost leaves, especially Chinese cabbage and cabbage leafy vegetables, and the outermost leaves can be peeled off to avoid the risk of eating pesticides.

3 Blanching with hot water: For some vegetables that are difficult to remove pesticide residues, such as celery, cabbage, green peppers, cowpeas, etc., before going to the pot, you can wash the surface with clean water, blanch it in boiling water for 2 5 minutes, and then rinse it with water 1 2 times to remove 90% of the residual poison. Most of the pesticides dissolved in oil will not penetrate into the inside of vegetables, as long as the skin of the vegetables is thickly peeled off, and then scalded with hot water, the pesticides or residues can be dissolved.

4. Peeling and cleaning: Vegetables with skin, such as cucumbers, carrots, winter melons, pumpkins, eggplants, etc., can be peeled off and then washed with water, which is the easiest way to remove pesticides.

5. Wash after adding salt: If you are still not at ease after cleaning the cucumber vegetables, you can put them on the cutting board and add salt, gently turn the cucumber on the cutting board with your hands, and then wash off the salt with water to dissolve the insecticide that has penetrated into the skin of the cucumber.

It's okay to eat less, it's best to soak in water before eating, after saying, now all vegetables and fruits are pesticides, so don't you have to eat them?

Many people not only love to eat fruits and vegetables, but also love to eat raw fruits and vegetables; In order to adhere to the nutritional value of melons and fruits, there are many people who like to eat them with the skin. However, there is a basic hygienic condition here, which is to remove residual poisons. The most common types of pesticide residues in fruits and vegetables are organophosphorus and organochlorine.

Long-term consumption of vegetables and fruits with pesticide residues that are not clean and clean will definitely bring great damage to human health. The damage mainly includes the following five aspects.

1. Cause the body's immunity to be reduced: long-term consumption of pesticide residue vegetables, after the pesticide is absorbed by the blood, it can spread to the synapses and nerve-muscle junctions, and specifically press acetylcholinesterase to form phospholase, which directly damages neurons, forms the central nervous system and dies, resulting in the reduction of immunity of various organs in the body. For example, frequent colds, dizziness, palpitations, night sweats, insomnia, forgetfulness, etc.

2. Gastrointestinal diseases: because the mucosa of the gastrointestinal digestive system is rich in blood vessels and has many folds in the stomach wall, it is easy to store poisons. Such pesticide residues are simply piled up in the middle, resulting in slow diarrhea and disgust.

3. Aggravate the burden on the liver: When residual pesticides enter the body, the liver mainly relies on the liver to make microsomal oxidases to absorb these toxins and carry out oxidative differentiation. If you eat fruits and vegetables with pesticide residues for a long time, the liver will work constantly to differentiate these toxins.

Long-term overload can lead to some liver diseases such as cirrhosis and hydrohepatosis.

Vegetable pesticide residues overrun the damage to the body? There are hundreds of pesticides in our country, including bio-derived pesticides, chemical pesticides, mineral drugs and so on. The damage to the human body is relatively large and highly toxic pesticides, mostly organophosphorus, and the national rules before and after prohibit the inclusion of 66.

6. 41 kinds of pesticides such as DDT, methamidophos, and dithionox.

Unless it is illegal, this kind of pesticide cannot be bought on the market, in other words, if the residue is large, it will cause acute poisoning, damage to nerve function and skeletal muscle, and even death. In addition, some carbamate and organochlorine, pyrethroid pesticides, mostly attributed to poisoning, or low-toxicity pesticides, the residues in vegetables usually do not occur acute poisoning to the human body, but this kind of pesticides, relevant studies have shown that they will be enriched, resulting in endocrine disorders, and even carcinogenic and other latent risks.

In short, the quantitative specifications of pesticide residues and national standards are formulated based on human physiological and pathological research, but it does not mean that everyone can accept it if they eat it within this scale, and the human system or various factors will cause different degrees of harm. However, there is no need to be afraid, according to experience, usually vegetables, the residue overrun is only a few, if you are worried, after buying vegetables home, do not immediately put it in the refrigerator, put it in a ventilated place overnight, and then carefully clean it with active water, cook it and then eat, so that the residual pesticide can be lost and differentiated.