What are the measures to protect the soil, and what are the effective measures for the prevention an

There are soil protection measures such as rational use of pesticides, rational use of chemical fertilizers, use of chemical amendments, and biological improvement.

1. Rational use of pesticides

Daily maintenance of land needs to pay attention to the development of high-efficiency, low-toxicity and low-residue pesticides. The rational use of pesticides can not only reduce the pollution of the soil, but also economically and effectively eliminate diseases, insects and weeds in the land, so as to maximize the positive effect of pesticides.

2. Rational use of chemical fertilizers

According to the characteristics of the soil, climatic conditions, and the growth and development characteristics of crops, we can carry out formula fertilization, increase organic fertilizer, strictly achieve scientific fertilization, and control the use range, amount and frequency of toxic fertilizers, so as to effectively protect the soil.

3. Use chemical improvers

When the soil is mildly contaminated with heavy metals, the application of inhibitors can effectively convert heavy metals into insoluble compounds. So as to avoid the absorption of crops, affecting the quality of crops. Commonly used inhibitors include lime, alkaline phosphate, carbonate and sulfide.

Since most of the heavy metals are sulfur, green manure, straw and other fertilizers are applied in the fields. Soil disinfection can also be carried out on a regular basis.

4. Adopt biological improvement

Crop rotation in a planned manner. Arrange different vegetables reasonably, and try to consider the family type, root depth, fertilizer absorption characteristics and acidity and alkalinity of different vegetables.

Three ways to protect your soil:

1. Rational use of chemical fertilizers and increased application of organic fertilizers: according to soil characteristics, climatic conditions, and crop growth and development characteristics, the rational use of fertilizers and the scope and amount of fertilizer application. Increasing the application of organic fertilizers can promote the absorption of heavy metals and pesticides in the soil.

At the same time, the addition of organic fertilizers can also speed up the flow of microorganisms and accelerate their degradation. The combination of organic and inorganic fertilizers can improve the structure of the soil, enhance the stress resistance of crops, and provide nutrients such as potassium, phosphorus, and high-quality nitrogen for the soil.

2. Harmless treatment of manure and garbage, no longer casually landfilled into the soil: livestock and poultry manure returning to the field is a more traditional treatment method, and manure recycling is a very effective way. Livestock and poultry manure is rich in protein, vitamin B, minerals, carbohydrates, etc., and through the fermentation of starter cultures, the manure can be excreted into the soil.

It has played a great role in improving the soil and increasing crop yields. In this way, the land can be adequately nourished, and the excrement can be purified and treated.

3. Breed earthworms and other animals to protect the soil: earthworms can cut the soil, make the soil soft, and allow air and water to easily enter the roots of the plant. This is what earthworms do in the soil.

Earthworms dig burrows and ditches that help the soil drain excess water quickly. Earthworms also degrade and evacuate contaminants from the soil. Due to the abuse of harmful substances such as wastewater irrigation, dust precipitation, pesticides, and fertilizers, soil pollution is caused, and earthworms can absorb and decompose pollutants such as organic pesticides, heavy metals, and radioactive substances in their habitat.

More earthworms can be raised to protect the soil. This method is relatively economical and has significant ecological effects.

1. What are the effective measures for the prevention and control of soil pollution?

1) bioremediation methods for contaminated soil;

2) chemical methods for remediation of contaminated soil;

3) increase the application of organic fertilizer;

4) regulating soil redox conditions;

5) change the farming system;

6) soil change and turning;

7) Implement targeted measures.

Farmland soil pollution remediation is mainly based on in-situ remediation technology, which can be divided into three types: bioremediation, physical remediation and chemical remediation.

2. Legal basis: Article 11 of the Law of the People's Republic of China on the Prevention and Control of Soil Pollution.

People** at the county level or above shall include efforts on the prevention and control of soil pollution in citizens' economic and social development plans and environmental protection plans. The competent departments for ecology and the environment of local people's ** at the districted-city level or above, in conjunction with the competent departments for development and reform, agriculture and rural affairs, natural resources, housing and urban-rural construction, forestry and grassland, and so forth, shall draft a soil pollution prevention and control plan on the basis of environmental protection planning requirements, land use, soil pollution status census and monitoring results, and publish it for implementation after reporting to the people's ** at that level for approval.

II. What obligations shall be performed by key soil pollution supervision units.

1. Strictly control the discharge of toxic and harmful substances, and report the discharge to the competent department of ecology and environment on an annual basis;

2. Establish a system for the investigation of potential soil pollution hazards to ensure that toxic and harmful substances are continuously and effectively prevented from leakage, loss, and dispersion;

3. Formulate and implement a self-monitoring plan, and report the monitoring data to the competent department of ecology and environment.

(1) Carry out sewage irrigation scientifically.

There are many types of industrial wastewater with complex compositions, and the wastewater discharged from some factories may be harmless, but when mixed with wastewater discharged from other factories, it becomes toxic wastewater. Therefore, before using wastewater to irrigate farmland, it should be purified in accordance with the standards stipulated in the "Farmland Irrigation Water Quality Standards", so as to not only use sewage, but also avoid soil pollution.

2) Rational use of pesticides.

Attaching importance to the development of high-efficiency, low-toxicity and low-residue pesticides and rational use of pesticides can not only reduce soil pollution, but also economically and effectively eliminate diseases, insects and weeds, and give full play to the positive effects of pesticides. In production, it is necessary not only to control the dosage, scope of use, number of spraying and spraying time of chemical pesticides, improve spraying technology, but also to improve pesticide dosage forms, strictly limit the use of highly toxic and high-residue pesticides, and attach importance to the development and production of low-toxicity and low-residue pesticides.

3) Rational application of chemical fertilizers and increased application of organic fertilizers.

According to the characteristics of the soil, climatic conditions and the characteristics of crop growth and development, formula fertilization, strict control of the use of toxic chemical fertilizers and dosage.

Increasing the application of organic fertilizer and increasing the content of soil organic matter can enhance the adsorption capacity of soil colloids to heavy metals and pesticides. For example, brown fulvic acid can absorb and dissolve trichlorobenzene herbicides and some pesticides, and humus can promote the precipitation of cadmium. At the same time, the addition of organic fertilizer can also improve the flow conditions of soil microorganisms and accelerate the biodegradation process.

4) Apply chemical amendments and take biological improvement measures.

The application of inhibitors in soils mildly contaminated with heavy metals can convert heavy metals into poorly soluble compounds, reducing the uptake of crops. Commonly used inhibitors include lime, alkaline phosphate, carbonate and sulfide. For example, the application of lime or alkaline furnace ash in acidic or slightly acidic soil contaminated with cadmium can convert active cadmium into insoluble substances such as carbonate or hydroxide, and the improvement effect is significant.

Because most of the heavy metals are sulfur-loving elements, the application of green manure and straw in paddy fields, and the application of an appropriate amount of sodium sulfide and stone sulfur mixture on dry land are conducive to the formation of insoluble sulfides by heavy metals.

The roots of the plant are relatively well developed, which can be tightly rooted in the soil, fixing the soil and preventing soil erosion. And the leaves of plants are able to photosynthesize, absorb carbon dioxide from the air, release oxygen, and promote the circulation of the entire ecosystem. Some tall plants have a very large canopy, which can resist the rain and avoid damaging the soil.

Therefore, it is necessary to protect plants in life and plant plants reasonably. Soil phytoremediation technology not only remediates the soil, but also purifies and greens the surrounding environment. It has little environmental disturbance and is in situ treatment for soil; The process of phytoremediation of contaminated soil is also the process of increasing soil organic matter content and soil fertility, and the soil purified by phytoremediation is suitable for the growth of a variety of crops. Phytoremediation technology makes the surface stable for a long time, controls wind erosion and water erosion, and reduces soil erosion. The cost of soil phytoremediation technology is lower.

Limitations: The soil phytoremediation process is slower, less efficient and has a longer cycle than the physicochemical process. And different types of plants should be selected for different types of soil pollution and pollution degrees.

Soil phytoremediation technology has certain requirements for natural and artificial conditions such as soil fertility, climate, moisture, salinity, pH, drainage and irrigation systems. When a plant is attacked by pests and diseases, it can also affect its ability to repair. According to the characteristics of plants that can tolerate or superaccumulate some specific compounds, green plants and their symbiotic microorganisms are used to extract, transfer, absorb, decompose, transform or fix organic or inorganic pollutants in the soil, and remove pollutants from the soil, so as to remove, reduce or stabilize pollutants, or reduce the toxicity of pollutants.

The object of phytoremediation is soil contaminated with heavy metals, organic matter or radioactive elements. Studies have shown that the pollutants in the soil can be purified through the absorption, volatilization, root filtration, degradation, and stabilization of plants, so soil phytoremediation technology is a green technology with development potential to control environmental pollution.

Legal Analysis] 1. The state protects cultivated land and strictly controls the conversion of cultivated land into non-cultivated land. 2. The State implements a compensation system for the occupation of cultivated land, and if non-agricultural construction has been approved to occupy cultivated land, in accordance with the principle of "how much is occupied, how much is reclaimed", the unit occupying cultivated land shall be responsible for reclaiming cultivated land equivalent to the quantity and quality of cultivated land occupied, and if the cultivated land is conditionally reclaimed or the cultivated land reclaimed does not meet the requirements, it shall pay cultivated land reclamation fees in accordance with the regulations of the provinces, autonomous regions, and municipalities directly under the Central Government, and earmark funds for the reclamation of new cultivated land. 3. Non-agricultural construction must use land sparingly, and those that can use wasteland shall not occupy cultivated land to use inferior land, and shall not occupy good land.

4. The State implements a basic farmland protection system, and prohibits occupying cultivated land to build kilns and graves, or building houses, digging sand, quarrying, mining, and taking soil on cultivated land without authorization. It is forbidden to occupy basic farmland for the development of forestry and fruit industry and to dig ponds for fish farming. 5. It is forbidden for any unit or individual to be idle or barren cultivated land, and strict measures shall be taken to encourage the rational development of unused land and land consolidation, the transformation of medium and low-yield land, and the rectification of idle land and abandoned land that has been damaged due to excavation, subsidence, occupation, etc., shall be reclaimed and given priority to the dry and cracked industry of pure crude agriculture.

6. Encourage citizens to cherish and rationally use land and effectively protect cultivated land, and stipulate that units and individuals with outstanding achievements in the protection and development of land resources, rational use of land, and relevant scientific research shall be rewarded by the people.

Legal basis] Land Management Law of the People's Republic of China Article 30 The State protects cultivated land and strictly controls the conversion of cultivated land into non-cultivated land. The State implements a compensation system for the occupation of cultivated land. Where cultivated land is occupied with approval for non-agricultural construction, the unit occupying cultivated land shall be responsible for reclaiming cultivated land equivalent to the quantity and quality of the cultivated land occupied in accordance with the principle of "how much is occupied, how much is reclaimed"; Where there are no conditions for reclamation or the cultivated land does not meet the requirements, the cultivated land reclamation fee shall be paid in accordance with the provisions of the province, autonomous region, or municipality directly under the Central Government, and the special funds shall be used for the reclamation of new cultivated land.

The people of provinces, autonomous regions and municipalities directly under the Central Government shall formulate plans for the reclamation of cultivated land, supervise the units occupying the cultivated land to reclaim the cultivated land in accordance with the plan or organize the reclamation of cultivated land in accordance with the plan, and carry out acceptance and acceptance.

The leaves of the plants absorb carbon dioxide to release oxygen, the roots of the plants hold the soil in place, and the shading of the canopy reduces the amount of rain that washes the ground.

Hello, there are three ways to protect the soil of the bending gods: 1. Rational use of agricultural yao: we often maintain land, and we need to pay attention to the development of high-efficiency, low-DU, and low-residue agricultural yao, improve the dosage form of agricultural yao, and strictly limit the use of agricultural yao and high-residue agricultural yao.

2. Rational use of chemical fertilizers and increased application of organic fertilizers: strict formula application of buried fertilizer, strict control of the scope of application and dosage of DU fertilizer. 3. Use chemical amendments and take biological improvement measures

The application of inhibitors in soil-blind frontal soils mildly contaminated with heavy metals can convert heavy metals into insoluble compounds and reduce the absorption of crops. <>