How to regulate soil aeration, how to regulate soil aeration?

1.Reduce the amount of chemical fertilizer and increase the application of organic fertilizer.

Organic matter can improve the structure of soil and promote the formation of aggregate structure, thereby increasing the porosity of soil and improving the aeration and water permeability of soil. The large-scale application of chemical fertilizers has caused a sharp decrease in the content of organic matter in the soil, which has caused a series of problems such as soil compaction, acidification, and destruction of soil structure.

Therefore, on the basis of reducing the amount of chemical fertilizer, we should increase the application of organic fertilizer, supplement the content of organic matter for the soil, improve the soil environment, and increase the air permeability of the soil.

2.Increase the application of microbial fertilizers.

The problem of soil stubble is serious in perennial crops, and the number of beneficial bacteria in soil has decreased significantly, while the number of harmful bacteria has increased significantly, which has led to the frequent occurrence of disease transmission and the reduction of soil activity.

Microbial fertilizer contains a large number of beneficial bacteria, after the microbial agent is used in the soil, the beneficial bacteria can grow and multiply rapidly, supplement a large number of beneficial bacteria for the soil, and these bacteria can also effectively inhibit the reproduction and expansion of harmful bacteria, improve the soil environment and soil pollution, and promote the growth of crop roots and the improvement of yield and quality.

3.Watering wisely.

The wrong watering method is also one of the reasons for the poor air permeability of the soil. We need to change the previous watering method of flood irrigation and change to the watering method of small water frequent watering and drip irrigation, which can reduce the damage of flood irrigation to the aggregate structure of the soil and improve the air permeability of the soil.

4.Cultivated pine*

After planting, crops should be strengthened to cultivate pine*, which can improve the air permeability of the soil and be conducive to the growth of plant roots.

Loosen the soil in time and turn it deep in the winter. Apply organic fertilizer and less nitrogen fertilizer. Bury orange straw and the like in the soil.

The improvement of organic matter also contributed to the improvement of soil microbial activity. The activity of microorganisms loosens the soil and also produces some substances that promote the growth of the root system, which is beneficial to the growth of the root system. Secondly, reasonable watering to reduce the damaging effect of watering on the soil.

Traditional watering has a strong effect on soil erosion and compaction, and the air in the soil is squeezed out by flood irrigation, and the aggregate structure of the soil is also destroyed, which is not conducive to the improvement of soil water and fertilizer retention. After watering, the surface layer of the soil is compacted, and the air permeability decreases, so it is necessary to loosen the soil by cultivating the soil to break the compaction of the soil surface layer and restore the air permeability of the soil. After the vegetables in the shed have grown, the loosening of the soil can not be carried out, and the soil compaction is powerless to break.

Drip irrigation has the effect of protecting the soil. Drip irrigation is different from flood irrigation in that it slowly moistens the soil. In areas such as Qingzhou, where drip irrigation has been promoted for many years, vegetable farmers generally report that the soil in the shed using drip irrigation is looser and more breathable.

Again, hoe diligently. After the vegetable is planted, it is necessary to pay attention to the frequent hoeing, so that the air permeability of the soil is good, which is conducive to the growth of vegetable roots. Generally, after the vegetables are planted, they should be hoeed every 3-5 days.

And after each watering, you must hoe in time. Pay attention to the hoe can not be too deep, too deep soil is easy to agglomerate, but not too shallow, too shallow effect is not good, the general hoe depth to 3-5 cm is appropriate. In addition, biological fertilizer is reapplied to improve microbial activity.

After a long period of continuous cropping, harmful microorganisms accumulate in the soil, while beneficial microorganisms decrease. The application of bio-fertiliser can regain the dominance of beneficial microorganisms in the soil. Moreover, many beneficial microorganisms themselves have the effect of improving soil and improving soil permeability.

For example, applying 30-40 kg of "radical antibacterial 968" or "Dayuan Landing Root" per mu can not only improve the physical and chemical properties and air permeability of the soil, but also have a significant effect on improving the fertility of the soil and inhibiting the root diseases of vegetables.

Soil aeration is determined by the number of non-capillary pores in the soil. Irrigation, rainfall, and livestock trampling often reduce the non-capillary pores of the soil. Ploughing, on the other hand, can increase non-capillary pores. In response to different situations, corresponding measures should be taken to adjust the soil aeration conditions.

1) Deep tillage, combined with organic fertilizer, to improve soil aggregate structure.

2) Timely tillage, timely loosening of the soil, so that the compacted soil becomes loose, after ploughing, Xunchai timely rake pressure, can reduce the excessive large pores of the soil, weaken the aeration.

3) improve the texture to make it loam;

4) Low-lying and waterlogged land, drainage.

Increasing the amount of organic matter in the soil can be increased by increasing the amount of organic matter in the soil. Soils with high organic matter content, loose soil, and good air permeability are called "sponge fields" by farmers, and the crops grown in this soil are highly productive; Increasing the content of organic matter can also improve the activity of soil microorganisms, which can loosen the soil and facilitate the root growth of plants.

Proper watering can effectively protect the soil. The traditional watering method is easy to erode and compact the soil, and if the method of flood irrigation is adopted, the air in the soil will be squeezed out, the aggregate structure of the soil will be destroyed, and the water and fertilizer retention of the soil will be reduced. Drip irrigation, on the other hand, protects the soil, making it looser and more breathable.

After the plant is planted, frequent hoeing can increase the air permeability of the soil and facilitate the growth of the plant root system.

Re-application of microbial fertilizer can improve the activity of microorganisms. Soil tillage for a long time will cause harmful microorganisms to accumulate and beneficial microorganisms to decrease. Beneficial microorganisms can not only improve the soil and improve the air permeability of the soil, but also improve soil fertility and inhibit root diseases.

The main mechanism of soil aeration is the movement and flow of air clumps. Air can penetrate through soil pores and enter and exit the soil to retain oxygen inside the soil** and expel carbon dioxide and other undesirable gases. The quality of soil aeration depends on factors such as the size, distribution, shape, infiltration, connectivity and soil moisture content of soil pores.

It is necessary to have enough pores to contain the air, but not to be over-wet, otherwise it will inhibit the entry of oxygen and the expulsion of carbon dioxide. Therefore, maintaining proper soil aeration is one of the important conditions to ensure the healthy growth of plants.

The main mechanism of soil aeration is the diffusion of gases. Oxygen in the pores of the soil is essential for root respiration and microbial metabolism. The diffusion of gases is achieved by the influence of atmospheric pressure in the pores of the soil.

Under stationary conditions, the rate of diffusion of the gas depends on factors such as temperature, pressure, soil pore structure, and moisture content. After rainfall, the moisture in the pores of the soil increases, and the diffusion rate of gases in the soil slows down, resulting in a decrease in the aeration of the soil. In addition, microbial metabolism and root respiration in the soil will also consume oxygen, resulting in insufficient oxygen base bonds in the soil, which will also reduce the aeration of the soil.