What pesticides can be saved?

Plant-based pesticides.

Plant-based pesticides are a branch of biopesticides. It refers to the use of stable active ingredients contained in plants, according to a certain method of the recipient plant after use, so that it is free from or alleviate diseases, insects, weeds and other harmful organisms. All kinds of plant pesticides are usually not a single compound, but all or part of the organic substances of plant organisms, the composition is complex and changeable, but generally contained in alkaloids, glycosides, toxic proteins, volatile essential oils, tannins, resins, organic acids, esters, ketones, terpenes and other substances.

Broadly speaking, plants rich in these highly physiologically active substances have the potential to be processed into pesticide formulations in abundant quantities and substance categories.

Plant growth regulators.

Definition: Synthetic chemicals that have a regulatory effect on the growth and development of plants are called plant growth regulators.

Plant growth regulators are a class of pesticides used to regulate plant growth and development. Through specific plant growth regulators, people carry out a variety of regulatory activities such as promoting, inhibiting, and delaying plants, so that plants can grow and develop in the direction of human needs.

For example, retargents have been used to make wheat stalks shorter and more robust to enhance their resistance to lodging; People use accelerators to promote more nutrients to the fruit, and cultivate a large and sweet watermelon; People use inhibitors to inhibit potato germination, prolong the storage period, etc.

Plant growth regulators have different properties from traditional pesticides. Different from the shortcomings of traditional pesticides such as high toxicity, high residue, and easy to produce resistance, plant growth regulators have the advantages of fast effect, low dosage, low toxicity, high efficiency, not easy to residue, and not easy to produce resistance. This makes the market prospect and future role of plant growth regulators very promising.

In the field of pesticides at home and abroad, the scientific research and application of plant growth regulators also occupy an increasingly important share.

On the market, the widely used plant growth regulators are: sodium dinitrate, sodium naphthalene acetate, amine fresh ester, calcium cyclic acid, multi-effect frustration, chlormequatin, etc.

Herbicide. Pesticides used to eradicate or control the growth of weeds are called herbicides. The beginning of chemical weeding in farmland can be traced back to the late 19th century, when the control of downy mildew in European grapes was occasionally found to be able to harm some cruciferous weeds but not cereal crops. France, Germany, and the United States have found the herbicidal effect of sulfuric acid and copper sulfate at the same time, and are used for weeding in wheat and other places.

The period of organic chemical herbicides began in 1932 with the discovery of the selective herbicide dinitrophenol. The emergence of 2,4-drop in the 40s of the 20th century greatly contributed to the rapid development of the organic herbicide industry. The glyphosate synthesized in 1971 has the characteristics of wide herbicidal spectrum and no pollution to the environment, which is a major breakthrough in organophosphorus herbicides.

Coupled with the emergence of a variety of new dosage forms and new use technologies, the weeding effect has been greatly improved. In 1980, herbicides accounted for 41% of the world's total pesticide sales, surpassing pesticides to become the number one. Since then, the development of herbicides in the world has gradually stabilized, mainly developing varieties with high efficiency, low toxicity, broad spectrum and low dosage, and disposable treatment agents with little environmental pollution have gradually become the mainstream.

In daily life, there are situations where we may swallow something by mistake, but in most cases, it is not easy to have problems, because the body is also very strong. However, in rural areas, basically every household has some fertilizer, and in some cases, some people may swallow it by mistake for many reasons, which is a very risky personal behavior. It is important to understand that once the fertilizer is drunk, it will die, and it is a chronic poison after all.

So, what should you do if you swallow fertilizer by mistake?

Space adults who swallow fertilizer by mistake are the first to vomit the medicine. Dial 120 at the first time of accidental swallowing, and go to a nearby hospital for immediate gastric lavage.

If your home is far away from the hospital outpatient clinic and the standard is limited, you should also go to the urban hospital outpatient clinic or even the clinic immediately. If there is fertilizer residue or excrement stained with chemical fertilizer, immediately remove it with soap, and there is no need to break it in the whole process, otherwise, it will accelerate the spread of poison, and the poisoning will be more serious. When harmful substances enter the body and flow through the blood to every location in the body, hemoperfusion and blood analysis are required.

At this point in time, it will be between 2 hours and 4 hours after the poisoning, and there will be nothing that can be done if it is a little later. However, hemoperfusion may cause the symptoms of low platelets or low blood pressure, and the cost of blood analysis is too high for many families with ordinary income to afford. There is only one life, and no one can pay for it!

space misconceptions.

The influence of chemical fertilizer as a key production material in agricultural and animal husbandry production is getting higher and higher, and the demand for chemical fertilizer is gradually increasing

Misconception 1: If you don't take medicine at the beginning of the disease, you can't see the worms and don't take medicine.

Most of the diseases are in the early stage of the disease, the symptoms are very mild, and the effect of taking medicine is very good at this time, and after a large-scale outbreak, no matter how good the medicine is, it cannot be stopped. There are also indistinguishable prevention goals, see the medicine to use, some use pesticides to prevent plant diseases, some use pesticides fungicides to prevent insect pests, and even herbicides to prevent pests, especially in the case of pesticides, such situations are particularly serious, so that regardless of the indiscriminate, blindly follow the trend of taking medicine, at least miss the opportunity, affect the actual effect, and lead to drug damage, and even food crops.

Space Myth 2: Arbitrarily increase the concentration or dosage of the drug.

When the fertilizer is equipped, it is not proportional, no professional measuring instruments are required, only bottle stoppers and other non-standard containers are used; There is no definition of the total number, and it generally exceeds the required concentration value, which not only leads to consumption, but also accelerates pest resistance.

It will be life-threatening.

Farmers who are sick and eat pesticides will lead to death, pesticides are toxic, drinking pesticides will cause pesticide poisoning, there are many varieties of pesticides, and the toxicity is also divided into sizes, drinking pesticides will cause life danger, and sometimes a little pesticide may be fatal. You can't drink pesticides if you're sick.

Pesticides refer to chemical agents used in agriculture to control pests and diseases and regulate the growth of plants. It is widely used in agriculture, forestry and animal husbandry production, environmental and household hygiene, pest control, industrial mildew prevention and moth prevention, etc.

Why does pesticide not work? Plant protection prevention and control must grasp the goal and grasp the best time for prevention and control. Even for the same pests and diseases, the same pesticide response is different due to different stages of development.

If the best time for prevention and ** is missed, it is difficult to have a good preventive effect in large quantities. Therefore, only by fully understanding the occurrence, harm and development of diseases, insects and weeds, and using targeted and precise drugs at the most appropriate time, can we ensure good control results.

For example, some weeds are easier to control before the three-leaf stage, while some weeds are better controlled during the flowering stage. The control of borer must be carried out during the peak period of egg hatching; To prevent and control vegetable butterflies, leaf moths and other pests, the cleanest stool is good for morning spray control; The control of lepidopteran moths and some moths and moths is the best control effect at night. In order to grasp the occurrence and development law of diseases, insects and weeds, different pesticide control methods should be combined with the different ecological habits of various natural enemies.

For example, for natural enemies that like light, spraying can be used for prevention and control, and for natural enemies that are not suitable for spraying, comprehensive prevention and control such as drug trapping, seed treatment, and insect control should be carried out.

To control this kind of pests, the main means of pesticide control are: when spraying pesticides, care should be taken not to spray pesticides directly on the surface of the leaves or stems of the damaged plants, because this will produce pesticide damage. For example, when spraying pesticides, spray the pesticides on the leaves on the back of the leaves, so as to ensure that the pesticides do not harm the leaves.

There is a bug that likes to hide underneath the back of the leaves, stems, and roots, and it is the most harmful, so it is also the most harmful to plants. It is caused by a pest called the "Rye Panicle Thrips", which is characterized by the fact that adults like to lay eggs on the back of leaves, and adults are also very sensitive to predators.

When spraying pesticides, the pesticides should be mixed with the soil, and then diluted with water, which can improve the control effect of the pesticides. For natural enemy pests, the main means of integrated control of seed treatment and insect control should be adopted. Seed treatment is mainly the use of artificial capture methods or agents to treat the seeds of various natural enemies.

It may be that the pesticide is expired, or the pesticide is not suitable for the way, and then it rains after spraying the pesticide, which will cause the pesticide to have no effect.

It may be because the pesticides are volatilized when spraying pesticides, or it may be that there is more water mixed with them, so there is no effect after using pesticides.

It may be because the pesticide has expired, it may be because the pesticide has become invalid, or it may be because the pesticide used is wrong.