Does improving soil permeability and loose soil help promote root germination?

Breathable loose soil can promote the germination of plant roots, promote the decomposition of food nutrients, and have the effect of humidification and heat preservation, creating good conditions for root growth and nutrient absorption.

Yes. In addition to the obvious effect on root growth, soil aeration also has an important impact on the activity of soil microorganisms and the transformation of nutrients. When there is a lack of oxygen in the soil, the release of available nutrients is limited, the nitrifying bacteria cannot be active, and it may also trigger denitrification, resulting in nitrogen loss.

Under anoxic conditions, only the activities of aerophobic nitrogen-fixing bacteria with weak nitrogen-fixing ability were inhibited, while the activities of rhizobia and aerobic autogenous nitrogen-fixing bacteria with strong nitrogen-fixing ability were inhibited.

Improving soil permeability and increasing soil porosity are conducive to root expansion and fertilizer utilization. Make the root system of the plant more developed and the plant more vigorous; The fruit development speed and fruit shape will be significantly improved. The beneficial microorganisms in the soil are increased, the roots of crops are developed strongly, the resistance to diseases is enhanced, and the occurrence of soil-borne diseases is reduced. The soil quality is loose, the root system of plants is more developed, and the ability of crops to resist wind and lodging is significantly enhanced.

Soil aeration refers to the ability of soil air to exchange with the atmosphere, as well as the characteristics of gas diffusion inside the soil. The quality of soil aeration directly affects the effective use of soil fertility, which in turn affects the growth of crops. Poor soil aeration, insufficient oxygen, will inhibit the respiration of crop roots, and then weaken the function of roots to absorb water and fertilizer.

Different crops have different oxygen requirements. For example, the growth of rape and barley seedlings is greatly affected when the soil oxygen content is low, while rice seedlings can still grow normally when the soil oxygen content is 3%. This shows that the oxygen requirements of different crops are different, but the growth of any crop will be affected if the oxygen needs are not met, and the more severe the hypoxia, the greater the serious impact.

The permeability of soil is directly related to water, which is one of the main factors affecting soil fertility. In a soil system, water has two sides: without water, plants cannot absorb nutrients from the soil; Too much water causes poor soil aeration and insufficient oxygen, and in winter and spring, the soil temperature is too low, and toxic substances accumulate, which in turn affects the growth and development of plants.

Effect of soil aeration on microorganisms in soil. In the case of poor aeration, aerophobic microorganisms are dominant, the decomposition rate of organic matter slows down, the release of effective nutrients is less, and some harmful substances to crops such as hydrogen sulfide, low-valent iron and manganese and organic acids are formed. If the soil aeration is too strong (such as coarse sandy soil in dry land), aerobic microorganisms are absolutely dominant, and the organic matter decomposes strongly, which affects the effective utilization and continuous accumulation of soil organic matter.

Regulation and control measures: 1. Manual hoeing, cultivating, etc.

2. Increase the application of organic fertilizer, such as well-rotted animal manure, crop straw, etc.

3. Increase the application of microbial fertilizer.

The soil has good air permeability, and the roots can get the required sufficient gas components from the air to carry out normal life activities. Poor air permeability can easily cause root rot or other diseases, which may seriously lead to plant death.

The control measures are mainly to loosen the soil and increase the soil permeability.

Soil aeration improves the root environment, facilitates bacterial growth and root development, and generally crops grow well in well-aerated soils.

Good soil aeration is essential for crops to absorb large amounts of water, and poor soil aeration can affect microbial activity. The amount of oxygen and carbon dioxide in the soil has an impact on the root system of fruit trees, and the lack of oxygen can hinder the growth of fruit tree roots and even cause root rot. Soil aeration also affects the availability of soil nutrients, the activity and accumulation of harmful substances.

1. How soil aeration affects nutrient availability

1. Soil aeration is an important condition for crops to absorb water, if the soil aeration is poor, it will affect microbial activities, reduce the decomposition rate of organic matter and the effectiveness of nutrients. It also causes the decomposition of organic matter in the soil to form hydrogen, causing a chemical reduction reaction.

2. Aeration has some influence on root growth, and when the oxygen in the soil is insufficient, it will hinder the root growth of fruit trees, and may also cause root rot. Different fruit trees have different oxygen requirements, for example, the root system of apple trees can only grow normally when the oxygen concentration is 12%-15%.

3. Soil aeration will have some impact on microbial activities and various biological and chemical processes in the soil, which will also infect the availability of soil nutrients, the activity and accumulation of harmful substances. For example, in the soil of an orchard that is heavy in clay, compacted or flooded for a long time, it is easy to form elements such as hydrogen sulfide, reduced iron, and organic acids that poison the root system of fruit trees.

2. What is the effect of soil aeration on soil fertility?

1. The quality of soil aeration performance will directly affect the utilization of soil fertility, thereby affecting the growth of crops. When the soil is poorly aerated, the oxygen in the soil will be insufficient, which will inhibit the respiration of the crop roots, and thus weaken the ability of the roots to absorb water and fertilizer.

2. Soil permeability is also related to water, which is one of the main factors affecting soil fertility. In soil systems, water has two sides: without water, plants can't absorb nutrients; When there is too much water, it will lead to poor soil aeration and insufficient oxygen, which will affect the growth and development of plants.

3. If there is less oxygen in the soil and more carbon dioxide, the soil acidity will increase, and then the pathogenic mold will develop rapidly and cause the crop to be infected with pests and diseases, so good aeration is an indispensable condition for the crop to absorb nutrients.

Soil improvement includes deep maturation, cultivating aeration, guest soil improvement, soil cultivation, use of ground cover and ground cover seedlings, increasing organic fertilizer, saline-alkali soil improvement and other measures.

Deep ploughing: Deep ploughing combined with fertilization can improve soil fertility, improve soil structure and physical and chemical properties, promote the formation of soil aggregate structure, and increase porosity. Therefore, the soil moisture content increases greatly after deep ploughing.

Cultivating aeration: Cultivating can improve soil fertility, improve soil water and gas permeability, and make the relationship between soil water and gas tend to be coordinated. Guest soil improvement:

In the case that the soil is completely unsuitable for the growth of garden seedlings, it is necessary to implement partial soil replacement for the planting land. Ground cover seedlings: The use of organic matter or live seedling bodies to cover the soil surface can prevent or reduce water evaporation, reduce ground runoff, increase soil organic matter, regulate soil temperature, reduce weed growth, and create good environmental conditions for seedling growth.

Improvement of saline-alkali soil: In coastal and arid and semi-arid areas, some soils have too high salt content, which is harmful to the growth of seedlings. The concentration of this kind of soil solution is too high, and it is difficult for the roots to absorb water and nutrients from it, causing "physiological drought" and nutrient deficiency.

Seedlings not only have poor growth potential, but also are prone to premature senescence.

The roots of the plant breathe oxygen in the air and the soil is compacted, and the oxygen in the soil is reduced, which is not conducive to the respiration of the roots; Loosening the soil for plants can loosen the soil and increase the air in the soil crevices, which is conducive to promoting the respiration of the roots and promoting the growth of the roots

Therefore, d

Soil aeration mainly affects the absorption of nutrients by roots in three aspects: first, it affects the respiration of roots; the second is the production of toxic substances; The third is the morphology and availability of soil nutrients. Good aeration environment, so that the root oxygen supply is good, in normal metabolism; It does not accumulate toxic substances and makes the form of soil nutrients mainly available, which promotes the absorption of nutrients by roots. The lack of air in the soil, on the contrary, poisons the root system, which severely hinders the absorption of nutrients by the roots.

Changes in soil pH have a great impact on nutrient uptake by plant roots.

For example, when the pH of the medium is low, the absorption of -N by plants is inhibited; When the pH of the medium is high, it will inhibit the absorption of --N. For example, on acidic soil, it can inhibit the absorption of cations such as Ca2 and Mg2 by plants, so typical physiological deficiency often occurs.

The physicochemical properties of ions themselves, such as ionic radius, ionic valence, etc., as well as the interaction between ions, have a great influence on plant uptake.

The roots of plants breathe oxygen in the air and often loosen the soil, which can loosen the soil and increase the air in the soil crevices, which is conducive to the respiration of the roots, promotes the growth of the roots, and is conducive to the growth of the roots and the absorption of inorganic salts

So the answer is: