The soil quality has become very poor, what is the cause of serious compaction?

Now there are really a lot of problems in the soil, and I believe that farmers will not be unfamiliar with them. For example, the question of tying knots is indeed a common occurrence. This problem should have been the kind of loose soil.

For example, the soil dug out with a digging shovel should be loose, but the hard soil is very hard, and the shovel dug out a piece is also a piece. This kind of soil is so hard, the roots of the plant naturally do not grow well. Why have you cultivated good soil for so many years, and there have been so many problems in recent times.

Actually, there is a reason. Only by finding the cause can it be effectively improved. Today I will briefly talk to you about some of the disadvantages of soil knots, how they are formed, and how to improve them.

The problem of soil failure is dangerous. Because the roots of the plant grow in the soil. Because if he becomes very hard, the roots do not grow well and do not absorb nutrients well, and the crop will naturally not grow well.

In addition, this soil is very poorly permeable. Plant roots also breathe in the soil. If you don't breathe, you can easily die.

Soil problems are inextricably linked to the misuse of chemical fertilizers. In the past, we used to cultivate traditional fertilizers for thousands of years. Not only will this not harm the soil, but it will also improve the soil and form a good virtuous cycle, but if the fertilizer is used too much, it will not be used by the plant and will remain in the soil.

In this case, some beneficial organisms in the soil slowly die, the originally loose soil cannot maintain the structure, and there is a problem with the slab. This soil has poor fertilizer retention and poor aeration.

Now that we know the whereabouts of the problem, we naturally know how to improve it, so we use fertilizer reasonably. The use of chemical fertilizers must not be overused, and it is necessary to pay attention to whether it is used to understand the needs of crops, or mainly to use traditional organic fertilizers. In this way, more beneficial organisms can reappear in the soil, and care should be taken when watering.

If you don't water it often, it is easy to get planks. At the same time often replace the soil to make him more ventilated. Soil compaction refers to the lack of organic matter in the soil layer, poor block structure, damage to the soil mass structure caused by rainfall or irrigation, soil dispersion, and drying out, due to the effect of cohesion, the soil layer hardens, which is not suitable for plant growth.

The block structure of soil is an important indicator of soil fertility, and due to the destruction of soil block structure, soil remediation, fertilizer preservation capacity and permeability are reduced, resulting in the formation of soil plates. There is a serious shortage of organic fertilizer, the amount of straw returned to the field is reduced, the organic matter in the soil is insufficient, the soil fertility is reduced, and the block structure is destroyed. The decomposition of soil organic matter is constituted by the activity of microorganisms.

The content of soil organic matter is low, and the structure deteriorates, which seriously affects the microbial activity, affects the formation of soil mass structure, and leads to soil compaction.

Because the land becomes very compacted due to the lack of rain for a long time, the land also needs water to moisten.

Caused by the lack of water and various nutrients, the quality of the soil directly determines the yield of crops.

1. Due to the soil itself, some soils themselves belong to clay, which has poor aeration and water permeability and is easy to compact. 2. Partial application of chemical fertilizers, many nutrients in chemical fertilizers are not absorbed and utilized by other crops, but accumulate and precipitate in the soil, resulting in soil compaction. 3. The application of organic fertilizer is less, and it is difficult to supplement the organic matter of crops in the growth process, resulting in a lack of soil organic matter.

Soil compaction is due to the use of too much chemical fertilizer and too much light fertilizer. Lack of pan-organic fertilizers, such as human manure, plant ash, river mud, etc. In order to transform into a sponge field, it is necessary to plough deeply, mature and freeze, spring rake, apply more organic fertilizer, and implement straw returning to the field to improve soil permeability and moisture retention.

There are many people who think that improving the soil can be improved by applying more organic fertilizer. You may wish to think about it, organic fertilizer raw materials are different, production methods are different, use methods are different, and improvement methods are different, and the fertilizer effect and improvement effect produced are absolutely different. This is the accumulation of harmful substances.

In some places, groundwater, industrial wastewater and toxic substances are high in content, and excessive accumulation of toxic substances caused by long-term use of irrigation has resulted in surface soil compaction.

The reason why the soil has become harmful to plants is that the soil is compacted, and the soil compaction = buried plants alive, which seems to be the hardening of the soil surface, and the soil compaction is also easy to make the soil water retention, fertilizer retention and soil permeability worse. The roots of the plant are buried in such soil, conditioning the soil. For example, sandy loam soil and clayey soil are scientifically mixed and treated.

Improve soil pH and improve saline-alkali land. The destruction of soil aggregate structure reduces soil water and fertilizer retention capacity and permeability, resulting in hypoxia and decreased vitality of plant roots.

Minimize the use of chemical fertilizers, increase the use of organic fertilizers such as farm fertilizers, and apply manure or pine branches and leaves after fermentation to increase soil activity and reduce soil compaction. Microbial fertilizers can be applied, and microbial secretions will dissolve insoluble phosphoric acid in the soilLack of farm fertilizer: due to the increase in the degree of mechanization, livestock such as cattle and horses in some areas are gradually decreasing, and farm fertilizer is not taken seriously, resulting in soil compaction.

It should be advocated to increase the application of organic fertilizer and return straw to the field. The soil has not been carefully prepared and the soil has not been deeply cultivated. In the land preparation, the soil should be turned more than 20cm deep, and the soil rake should be smooth and fine.

Long-term rain during the growth of crops will cause soil compaction, so we can effectively loosen the soil by cultivating it.

Soil compaction is because the soil texture is too sticky, organic fertilizer is seriously insufficient, and plastic products are invested too much, so it is necessary to use organic fertilizer reasonably, irrigate and water reasonably, and loosen the soil more to ensure soil permeability.

The cause of soil compaction, first of all, to consider the problem of soil selection, if itself in the planting of flowers, the choice of easy to compact, such as garden soil, loess, etc., the soil is easy to compact, and secondly, if a single soil is selected, such as only garden soil to plant flowers, the soil is easy to compact. In view of the problem of soil selection, when planting flowers, we should choose loose and fertile nutrient soil, pine needle soil, peat soil, humus soil, etc., and should be matched with perlite soil, not single soil.

Soil compaction is an important indicator of soil fertility due to the lack of organic matter and poor structure of the soil surface, the structural damage and dispersion of soil materials under the action of external factors such as irrigation or rainfall, and the hardening of the soil surface by cohesion after drying. The main factors of soil compaction are farmland soil texture and clay weight, etc., to eliminate soil compaction, we should pay attention to the use of high-quality organic fertilizer, increase the input of beneficial bacteria, choose soil compaction improvement products, and rationally use chemical fertilizers.

It may be that it is too dry, so suddenly there is a compaction; I think the solution is to loosen the soil, then water it, and finally apply fertilizer.

Spring is the time to raise flowers.

In a good season, friends who usually like to raise flowers will also use this time to plant more beautiful flowers in the yard. In the process of maintaining these flowers, Wu Chain often encounters that after watering the flowers and then drying, the soil will become compacted and very hard, which is definitely not conducive to the growth and flowering of plants, so what causes this phenomenon in the soil?

What causes soil hardening?

In the process of raising flowers, it is also very common for the soil to be compacted, especially for potted flowers, which are not only easy to harden by using too alkaline tap water for a long time, but also easy to make the soil alkaline and appear to be compacted.

1. Watering with tap water that is too alkaline for a long time.

We all know that the water quality in the northern region is hard, but also alkaline, if used for watering flowers for a long time, it is easy to make the soil weak and alkaline, and it becomes hard after drying, and this soil is not conducive to the growth and development of flowers. Some organic fertilizer, or acidic fertilizer water, should be applied frequently to improve the pH of the soil.

2. The soil itself is too sticky.

If the soil is too sticky for planting flowers, it is also prone to compaction after each watering. Such soil has poor air permeability and water permeability, which is not conducive to the growth and development of the root system, and it is best to add some loose and breathable media, such as cinder, coarse sand, rotten leaves or well-rotted organic fertilizer. to increase the fertility and permeability of the soil.

3. Nutrients are scarce and soil alkaline.

There is also a situation that the nutrients in the soil have been absorbed by the flower roots, making the soil gradually alkaline, and the soil will become very hard and easy to form slabs.

How can I prevent the soil from hardening and slabbing?

After all, there is no such convenient rainwater and river water available, in order to achieve the acid-base balance of the soil and prevent the phenomenon of compaction, it can also be improved through these aspects.

Through our introduction, I believe you have a deeper understanding of what causes soil compaction to harden, soil hardening, and how to improve compaction.

Soil compaction may be caused by the fact that all nutrients are absorbed by plants, and the water and nutrient content in the soil is insufficient. It can also be caused by overwatering, where chloride ions in the water react with iron in the soil, thereby reducing the iron content. It can also be caused by the application of too much chemical fertilizer, transpiration, and low organic matter content.

The nutrients in the soil are completely absorbed by the plants, which leads to the occurrence of compaction. When the water and nutrients in the soil are insufficient, the adsorption capacity of the plant roots is not weakened, it will absorb oxygen, nitrogen and other gases in the soil, reduce the pores between the soils, and cause the soil to stick together.

When the soil becomes more viscous due to long-term overwatering, it will also lead to the occurrence of compaction. When a large amount of water irrigates the soil, the chloride ions in the water will have some chemical reactions with the iron in the soil, resulting in a decrease in the content of iron in the soil, resulting in the phenomenon of agglomeration.

Long-term application of chemical fertilizers is one of the reasons for soil compaction. Due to the excessive use of chemical fertilizers, the transpiration reaction of organic matter in the soil is released, which accelerates the evaporation of water in the soil, and the soil is prone to the phenomenon of splintering in the case of water shortage.

Failure to loosen the soil or repot regularly is also one of the reasons for soil compaction. Due to the poor air permeability of the soil, it is easy to appear alkaline, at this time the soil will be slabbed, and it is necessary to spray ferrous sulfate solution to neutralize the alkalinity of the soil, and at the same time, it is also necessary to apply organic fertilizer for decomposition and fermentation, without applying chemical fertilizer.

The main factors of soil compaction are as follows:

1. The soil texture of farmland is heavy and the tillage layer is shallow.

The clay content in the clay soil is more, and the average tillage layer is less than 20cm, and the capillary pores in the soil are less, and the aeration, water permeability and warming are poor. After rain, the soil aggregate structure is destroyed, resulting in crusting on the surface of the soil.

2. Low input of organic materials.

Without applying organic fertilizer or straw returning to the field, the organic matter in the soil is insufficient, the soil organic matter content is low, the physical and chemical properties are poor, and the activity of microorganisms is affected, thereby affecting the formation of soil aggregate structure, resulting in too large or too small soil acidity and alkalinity, resulting in soil compaction.

3. Plastic waste pollution.

Mulch film and plastic bags are not cleaned up, and they cannot be completely decomposed in the soil, forming harmful lumps. China's waste plastics enter landfills with domestic garbage every year, accounting for 3% and 5% of the weight of landfill garbage, of which the only part of the large fiber is plastic bag garbage, which is not easy to degrade when applied to the soil, resulting in compaction.

4. Long-term single partial application of chemical fertilizers.

Farmhouse fertilizer is seriously insufficient, dinitrogen, light phosphorus and potassium fertilizer, soil organic matter declines, humus can not be replenished in time, causing soil compaction and cracking. Long-term application of ammonium sulfate is also prone to soil compaction.

5. Suppression, ploughing and other agricultural measures lead to the destruction of the upper soil structure.

Due to the influence of mechanical tillage, the soil aggregate structure is destroyed, and only part of the fertilizer applied to the soil every year is absorbed and utilized by the crops in the current season, and the rest is fixed by the soil, forming a large amount of acid deposits, resulting in soil compaction. Improper tillage timing, such as ploughing and suppressing when the soil is too wet, is also easy to cause compaction.

6. Accumulation of harmful substances.

In some places, the content of toxic substances in groundwater and industrial wastewater is high, and the excessive accumulation of toxic substances caused by long-term irrigation causes surface soil compaction.

7. Soil erosion caused by heavy rainfall.

After heavy rainfall, the fine soil particles in the topsoil layer are carried away, causing the soil structure to be damaged. However, clay particles and small particles are easy to form compaction after precipitation and drying up in stagnant water or slow flow rate.

1.Introduction to soil compaction.

Soil compaction is a state in which the soil structure is closely arranged, which is formed by the close stitching and compaction between soil particles. It makes the soil texture compact, high density, reduced aeration and water permeability, hinders the growth of planted crops, and in severe cases, it will lead to desertification of farmland.

2.Causes of soil compaction.

There are many factors that contribute to soil compaction, including the following:

1) Biological factors: The activities of organisms in the soil sometimes cause soil compaction, such as earthworms, ants, etc., which will compact the soil.

2) Mechanical factors: In extreme drought, the soil will shrink after losing water, and at the same time, external forces such as wind and rain will also have a compaction effect on the soil.

3) Chemical factors: Defoliation and rainfall make the soil surface acidic, and long-term accumulation will also have an impact on soil compaction.

4) Management factors: Improper land management will increase the situation of dry soil compaction, such as over-cultivation and lack of reasonable farming practices.

3.Hazards of soil compaction.

Soil compaction has had many adverse effects on the ecological environment and agriculture. First of all, the soil has poor air permeability and weak water absorption under compaction conditions, and the root system cannot get enough oxygen and water, and the growth of crops is restricted. Secondly, soil compaction will affect the absorption, preservation and release of nutrients, and reduce the fertility chain and agricultural productivity of soil.

Long-term accumulation will lead to the loss of land productivity, desertification is becoming more and more serious, and the ecological environment is greatly threatened.

4.Prevention and treatment of soil compaction.

In view of the hazards of soil compaction, we should take corresponding prevention and treatment measures. First of all, it is necessary to make rational use of land to avoid a sharp decline in land quality caused by overdevelopment. Secondly, we should strengthen the monitoring and early warning of soil compaction, and take timely measures to prevent the occurrence of soil compaction.

For example, through agricultural crop rotation, rational fertilization, and soil structure improvement, the soil structure should be gradually improved to slow down the compaction.

5.Applications in agricultural production.

In agricultural production, there are a number of measures we can take to deal with soil compaction. For example, compaction can be avoided through different tillage practices, such as deep tillage, intercropping, crop rotation and other tillage measures. In addition, proper fertilization and water retention measures can also effectively prevent soil compaction.

For example, methods such as applying bio-organic fertilizer breeding, maintaining soil moisture, and increasing soil organic matter content.

6.Epilogue.

Soil compaction is a common but headache phenomenon, which has an inevitable impact on the ecological environment and agricultural production. It is very necessary and important for us to understand the causes and hazards of soil compaction, as well as the measures to prevent and control it. Only by protecting the soil can we achieve sustainable and stable development of agriculture, realize ecological agriculture, and contribute to the construction of ecological civilization.