Does the use of modern pesticides have such a large impact on the environment?

Of course, it will pollute the air and environment in all aspects, and it will be greatly spread and infected, because we have a lot of trees, and their extensive quantity is relatively large, so it will be greatly affected.

It has a big impact, because pesticides will remain in the air when spraying, pollute the air, and some pesticides will pollute the water.

There is definitely an impact on the environment. Because the pesticide residue rate is also very high nowadays, once the amount is used too much, it will definitely have an impact on the environment.

It is understood that excessive application of chemical fertilizers and pesticides will lead to malignant changes in soil properties, reduced product quality, and large differences in air pollution and production-to-income ratio. Taking the malignant change of soil properties as an example, many single chemical fertilizers are used to produce a variety of organic chemical salts due to a part of the soil compounds, which in turn leads to the imbalance of soil nutrient structure, the decline of physical properties, and the malignant transformation of soil properties.

(1) If a lot of single-element fertilizers are used in the field, their nutrients can not be digested and absorbed by crops, and nitrogen. Phosphorus. Some compounds, such as potassium, are susceptible to soil and produce a variety of organic chemical salts.

2) If the organic chemical salt content in the soil is too high, it will lead to the imbalance of soil nutrient structure, the decline of physical properties, and the toxic metal materials and harmful pathogenic bacteria in some lands exceed the standard, which will cause the malignant transformation of soil properties.

1) When planting crops, if a certain type of chemical fertilizer is applied, it will cause an imbalance in the nutrient composition of crops, and the conversion and generation of some chemicals in the body will be blocked, which will lead to a decrease in product quality.

(2) Too much chemical fertilizer will cause fruits and vegetables to be unsweet. Vegetables and fruits are not fragrant.

1) Too much chemical fertilizer will cause soil water-soluble nutrients and other substances to be washed by precipitation and field water injection into surface water and rivers, resulting in surface water and river water pollution in some places.

2) A part of the river. Fish and shrimp in the lake will continue to die.

1) Too much use of a single chemical fertilizer will lead to an imbalance in the nutrient composition of crops, an imbalance in nutrients, only increase the cost but not the production volume, resulting in low-quality agricultural products that are not easy to sell in the market or slightly lower in price, etc., and then provide damage to farmers.

2) suffer from the level of cultivation and planting. The limitation of factors such as the amount of fertilizer applied to crops prevents crops from obtaining high yields, which endangers the income of farmers.

Because there are a lot of pesticides. Large-scale use and its indiscriminate use, coupled with the non-biodegradability of pesticides, have led to obvious environmental pollution to the earth.

(1) The common sprayer method is used to apply pesticides, and the organic solution in the pesticide and a part of the pesticide will float in the air, and the air will be polluted immediately.

2) When the fields that have been sprayed with pesticides are washed by precipitation, the pesticides will enter the rivers and pollute the deep sea.

3) Some pesticide residues have a long time period, and this part of the pesticide will enter the deepest part of the geological structure according to the diffusion of the soil, and then pollute the surface water.

1) Many pesticides are used to destroy the nemesis of many insect pests, destroy the biological diversity of nature, and cause more serious diseases, such as planthoppers. leafhoppers and a variety of vine blight pests and diseases.

2) Pesticides not only lead to rapid pest breeding, but also harm birds that depend on insects for their livelihoods. Fish. Frogs and other microorganisms cause death and injury.

In agricultural production, chemical fertilizers and pesticides are very necessary, because phone bills can provide energy for plant growth. Pesticides prevent pests and diseases. This is essential.

Because many people think that they can increase the yield when they use it, and they also think that it can increase the growth rate, so they will use it.

Because this can control pests and diseases, can increase yields, and is good for agricultural products.

Contamination of soil by pesticides.

Regardless of the application method, a large amount of pesticide will enter the soil. Pesticide dressing, sowing, etc. are the direct cause of soil pesticide pollution. Sprayed pesticides, only 10% of the powder falls on the surface, about 5%-30% of the agent floats in the air, about 80% of the pesticides used in spraying fall into the soil, and due to the wind, rain and gravity, the pesticides attached to the crops and air dust will also fall on the ground, and the pesticides accumulated in the crop branches and leaves and animal residues are also transferred to the soil, which further aggravates the pesticide pollution of the soil, thereby endangering agricultural production.

The adsorption effect of soil on pesticides is closely related to soil characteristics, and the properties of pesticides themselves also affect adsorption. Most pesticides have a greater affinity for the surface of organic matter than for the surface of minerals, and are easily adsorbed.

Effects of pesticides on environmental organisms.

Pesticides can inhibit soil biological activities, especially in the case of long-term application, causing toxic effects on soil invertebrates, especially predators that control the reproduction of saprophytes and herbivores, and because these invertebrates can ingest pesticides from the soil and accumulate in the body, the animals that feed on these invertebrates will continue to accumulate pesticides in their bodies, so as to reach the content that is lethal or affects their normal life.

The use of pesticides will also cause harm to the natural enemies of pests, thereby weakening the role of restraining the natural factors of pests and destroying the ecological balance, so that pests are more rampant, and they have to increase the dosage and number of pesticide applications, so as to form a vicious circle. For example, frogs in rice fields are the main natural enemies of a variety of pests, and the application of methyl hexafen powder in the field, no adult frogs are seen after 2 days, and almost 100% of the young frogs and tadpoles are dead, and the frog eggs are also seriously damaged, and the hatching rate is only 30%. This undoubtedly undermines the frog's ecological control over the pest.

Excessive use of chemical fertilizers and pesticides will cause deterioration of soil properties, deterioration of product quality, environmental pollution and large gap between production and income ratio. Taking the deterioration of soil properties as an example, the application of a large number of single chemical fertilizers can easily make the soil consolidate some chemicals and form various chemical salts, resulting in the imbalance of soil nutrient structure and the deterioration of physical properties, resulting in the deterioration of soil properties.

1. What are the dangers of excessive use of chemical fertilizers and pesticides?

1. Deterioration of soil properties.

1) If a large number of single-element chemical fertilizers are applied in farmland, their nutrients can not only be absorbed and utilized by crops, but also some chemicals such as nitrogen, phosphorus, and potassium are easy to be consolidated by the soil to form various chemical salts.

2) If the content of chemical salt in the soil is too high, it will cause the imbalance of soil nutrient structure, the deterioration of physical properties, and the content of harmful metals and harmful bacteria in some plots will exceed the standard, resulting in the deterioration of soil properties.

2. Product quality declines.

1) When planting crops, if a certain chemical fertilizer is applied, it will lead to crop nutritional imbalance, and the transformation and synthesis of some substances in the body will be blocked, resulting in a decrease in product quality.

2) Too much chemical fertilizer will cause melons and fruits to be unsweet and vegetables not fragrant.

3. Environmental pollution.

1) Excessive amount of chemical fertilizer will cause soil water-soluble nutrients and other substances to flow into groundwater and rivers after being washed by rainwater and farmland irrigation, resulting in groundwater and river pollution in some areas.

2) Fish and shrimp in some rivers and lakes will also die.

4. The gap between production and income ratio is large.

1) Excessive application of a single fertilizer will cause crop nutrient imbalance, nutrient imbalance, only increase the cost but not increase the yield, resulting in low-quality agricultural products are not easy to sell or low, thus bringing losses to farmers.

2) Restricted by factors such as the level of cultivation and the amount of fertilizer required by crops, crops cannot obtain high yields, which affects farmers' income.

2. What are the hazards of pesticide pollution?

1. Soil pollution.

Due to the large-scale, large-scale use and abuse of pesticides, coupled with the non-degradability of pesticides, it has caused serious pollution to the earth.

2. Environmental pollution.

1) Pesticides are generally commonly used in spray, and the organic solvents and some pesticides in pesticides will float in the air and directly pollute the atmosphere.

2) When pesticides are washed away by rainwater, pesticides can enter rivers and pollute the oceans.

3) Some pesticides remain for a long time, and these pesticides will enter the deep ground through soil infiltration, thereby polluting groundwater.

3. Ecological destruction.

1) The use of pesticides in large quantities will kill and injure the natural enemies of many pests, destroy the ecological balance of nature, and lead to serious pests and diseases, such as spider mites, leafhoppers and various soil-borne diseases.

2) Pesticides not only cause the rapid reproduction of pests, but also affect the birds, fish, frogs and other organisms that depend on insects, resulting in ** incidents.

The amount of pesticide used is related to the area and yield.

First, the use of pesticides increases with the area under crop acreage. If the same crop is grown on different areas, then farmers need to buy more pesticides to protect these crops, so the use will increase accordingly.

Secondly, the amount of pesticide used will also vary with the change in yield. If the crop yield is low, it means that the pests and diseases are not too serious, and the number of pesticides used by farmers may be relatively small; If the crop yield is high, it means that pests and diseases are relatively more likely to appear, so agricultural locust farmers need to use more pesticides.

Therefore, the amount of pesticide use is formed by the comprehensive influence of a variety of factors, which is not only related to the planting area of crops, but also related to the yield.