The soil is the most important nutrient for plants, and what role does soil play in the growth of pl

I don't know if it's important But you can only say that they are all equally important, but because they are related to the physiological characteristics of plants, it is not and does not exist that no one is important, it can only be said that they promote each other, and what I said downstairs is also very right, Nitrogen, phosphorus and potassium are large elements, but the role of trace elements is also equally important, and you should know the barrel effect, if plants grow normally, the nutritional physiology of plants must be reasonably matched in order to reproduce normally, for example, for example, nitrogen and phosphorus, these two nutrients The role of nitrogen is to lay the foundation for the reproductive growth or normal growth of plants, but phosphorus can promote germination, which is why sometimes when phosphorus fertilizer is applied at the time of sowing, it can improve germination rate and germination potential, and there is potassium underneath, and its role can improve the plant's ability to adapt to the environment. For example, adversity, pests and diseases, mechanical damage, and many others, but it doesn't mean that these three important trace elements are the same, and each nutrient has a specific function, and no one is important or who is not. There was an experiment in which I used a nutrient for a long time, and the result was that the plant died, and the reason was very simple, poisoning.

The most important ones should be n, p, and k, but n can get some of it from the atmosphere, so I think it's better to choose p and k if you choose two of them.

It is divided into macroelements and trace elements; A large number of elements are mainly n, p, and k.

Nitrogen, phosphorus, p, k Choose one of them!

In the process of plant growth, the soil mainly plays four roles: 1. It plays a supporting role, so that crops can be more easily exposed to the light source; 2. Provide water and oxygen necessary for crop growth; 3. Provide nitrogen, phosphorus, potassium and other nutrients; 4. It plays a buffering role for high concentration of nutrients and dense microorganisms.

The supporting role of the soil.

It provides mechanical support for green plants to take root and sprout in the soil, and the root system to stretch and intersperse in the soil, so as to ensure that the aboveground parts of green plants can stand stably in nature.

Supply of soil moisture and organic acids.

Soil is a granular structure composed of large and small particles such as mineral particles and soil organic matter, and water and air are held in the crevices of the particles. The interstitial water and air in the soil aggregate structure can be utilized by crops.

It is important to maintain a moderate amount of moisture and air between the particles of the soil, and to drain well and at the same time adequately supply water. In other words, it is necessary to keep the soil loose and moist.

The supply of nutrients in the soil.

Soil species contain nutrients necessary for crop growth, and the mineral ions of these nutrients are combined with humus in the soil, and some nutrients such as K and N are easy to be lost, and some nutrients such as P, Ca, and Mg are easy to be fixed by the soil and are easily absorbed by crops. Soil also has the ability to conserve water, maintain soil moisture, and supply nutrients.

In addition to fresh animal and plant remains (coarse organic matter), there is also brown or black organic matter with a definite structure and no fixed form, which we call humus. The mineral nutrients of the soil in humus are bonded together with humic acid to form a humus complex, which can retain inorganic nutrients or make soil agglomerates, and improve the nutrient retention ability of the soil.

Clay and humus have a small particle size, so they have a larger surface area than the same volume of gravel, and a large amount of nutrients can adhere to them. Nitrogen and potassium can then be adsorbed on the surface of humus and gradually absorbed by crops. This is also the reason why soils with high humus content tend to retain water and fertilizer, while sandy soils tend to lose nutrients.

Soil can act as a buffer environment.

When the environment in which crops grow changes drastically, the soil can provide a buffer for plants: 1. The temperature change range is reduced; 2. When nutrients and pH change drastically, the soil can play a role in chemical buffering; 3. The soil can maintain a diverse microbial environment, and when the pathogenic bacteria increase sharply, it can properly buffer the damage caused by the pathogenic bacteria. For the healthy growth of crops, it is important to improve the buffering capacity of the soil.

The soil provides the environment for the roots of plants to grow. The water, air, and mineral elements necessary for plant growth are taken directly by plants from the soil.

Soil is the loose surface layer on the lithosphere where plants can grow, and it is the substrate for the life of terrestrial plants. It provides mineral elements and water essential for plant life, and is an important place for the exchange of matter and energy in the ecosystem. At the same time, it is itself the product of the interaction between the biological part and the inorganic environmental part of the ecosystem.

The soil contains a large number of other organisms, such as microorganisms and invertebrates. Microorganisms can decompose organic matter (plants cannot directly absorb organic matter) and turn it into inorganic matter that plants can directly use, providing nutrients for plant growth; Invertebrates, such as earthworms, can achieve the purpose of turning the soil through their physiological effects (exercise, etc.), so that the soil void is enlarged, and the air content is increased, and the earthworm manure can provide direct nutrients for plants.

Soil is the basis for plant growth and development. The ability of the soil to supply water, fertilizer, gas and heat needed for the normal growth and development of plants is called soil fertility. These conditions of the soil affect each other and restrict each other, such as more water, the soil has poor aeration, less organic, and easy to lose; On the contrary, the soil moisture is too low and cannot meet the water needs of medicinal plants.

At the same time, due to the strong activity of aerosic bacteria, the organic matter of the soil decomposes too quickly, which will also cause nutrient insufficiency. All kinds of plants have certain requirements for soil pH. Most plants are suitable for growing on slightly acidic or neutral soils.

Plant growth and development need to be nutriently guaranteed, and nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, manganese, boron, zinc, molybdenum and other nutrients need to be absorbed from the soil, especially nitrogen, phosphorus and potassium. In the cultivation process, attention should be paid to balanced fertilization, and at the same time, attention should be paid to the use of farmhouse fertilizer to facilitate soil improvement.

Summary. 1. The main ** of plant nutrients.

Organic matter contains various nutrients needed for plant growth and development, especially nitrogen in the soil, and more than 95% of nitrogen is present in the soil in an organic state. In addition, organic matter is also important for phosphorus, sulfur, calcium, magnesium and trace elements in the soil**. Therefore, the soil with more organic matter has more nutrient content, and chemical fertilizers can be applied less.

2. Promote the growth and development of crops.

Hu Min acid in organic matter can enhance plant respiration, improve the permeability of cell membranes, enhance the absorption of nutrients, and vitamins and some hormones in organic matter can promote the growth and development of plants.

3. Improve soil structure.

Humus in organic matter is the main cementing agent of soil aggregates, which can promote the formation of good structure. Organic matter also increases heat absorption, improves soil fertility and creates the right amount of soil compactness.

4. Improve the water and fertilizer retention capacity of the soil.

Soil organic matter is an organic colloid, which has a strong adsorption capacity and can absorb a large amount of nutrients and water.

5. Promote the activities of soil microorganisms.

Soil Organic Matter**The energy and nutrients required by soil microorganisms are conducive to the activity of microorganisms.

What are the effects of soil organic matter on plant production.

1. The main ** of plant nutrients.

Organic matter contains various nutrients needed for plant growth and development, especially nitrogen in the soil, and more than 95% of nitrogen is present in the soil in an organic state. In addition, organic matter is also important for phosphorus, sulfur, calcium, magnesium and trace elements in the soil**. Therefore, the soil with more organic matter has more nutrient content, and chemical fertilizers can be applied less.

2. Promote the growth and development of crops.

Hu Min acid in organic matter can enhance plant respiration, improve the permeability of cell membranes, enhance the absorption of nutrients, and vitamins and some hormones in organic matter can promote the growth and development of plants.

3. Improve soil structure.

Humus in organic matter is the main cementing agent of soil aggregates, which can promote the formation of good structure. Organic matter also increases heat absorption, improves soil fertility and creates the right amount of soil compactness.

4. Improve the water and fertilizer retention capacity of the soil.

Soil organic matter is an organic colloid, which has a strong adsorption capacity and can absorb a large amount of nutrients and water.

5. Promote the activities of soil microorganisms.

Soil Organic Matter**The energy and nutrients required by soil microorganisms are conducive to the activity of microorganisms.

Soil is rich in minerals, organic matter, living organisms, water and air.

A detailed analysis can be seen in: nitrogen, phosphorus, potassium, iron, tin, aluminum, copper, selenium, sulfur, calcium, carbon, manganese, molybdenum, zinc, boron and so on.

Soil provides nutrients and water for plant growth, and at the same time acts as a medium for plant root stretching and fixation. Whether the soil is fertile or not depends on whether the soil has a high content of organic matter. To improve the nutrients of the soil, you can increase the application of organic fertilizer, burn straw to scatter plant ash in the soil, or use biofertilizer to improve the soil.

Soil provides nutrients and water for plant growth, and also acts as a medium for plant roots to stretch and fix. Soil not only stores nutrients from time to time, but also carries out a series of biological, chemical and physical transformations of various nutrients in the soil.

The fertility of the soil depends on the high content of organic matter in the soil, which is rich in organic matter and can provide plants with a large amount of nutrients and promote plant growth. At the same time, the pH of the soil also controls whether the plants can grow or not, and neutral land is suitable for all plants.

However, after the same land is cultivated for a long time, the soil will be poor, and the nutrients of the soil need to be changed. First of all, organic fertilizer can be added, and after the straw is burned, the plant ash can be sprinkled in the soil, which is rich in organic matter, which can change the organic matter content of the soil.

The second is the use of biofertilizers, which stimulate biological activity. Long-term planting has led to the loss of soil nutrients, the accumulation of harmful substances, and the damage of plant roots, which is the use of biological fertilizer, stimulate biological activity, eliminate the invasion of harmful bacteria, promote the growth of crop roots, and achieve the effect of high yield and high yield.

1. Fix the plant and keep the plant root life activity environment at a relatively stable and suitable temperature.

2. Provide water and fertilizer needed for plant growth.

3. The air in the pores of the soil provides oxygen for the life activities of plant roots.

Equivalent to fertilizer, the soil contains water and some essential nutrients.

Soil is an essential thing for plants.

Plant growth and development must supply 16 kinds of chemical elements, otherwise plants cannot sustain life. The first 10 essential elements identified were carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (mg), sulfur (S), and iron (Fe). Later, due to the continuous improvement of scientific experimental methods, the improvement of the purity of the reagents used and the quality of the culture vessels, and the possibility of impurities mixed into the nutrient solution was reduced, and it was found that in order to make the normal growth and development of plants, in addition to the above 10 elements, boron (B), manganese (Mn), copper (Cu), zinc (Zn), molybdenum (Mo) and chlorine (Cl) should also be included.

All of these 16 chemical elements are called essential nutrients.

Carbon (C), hydrogen (H), oxygen (O) are found in the atmosphere and water, and they are used for photosynthesis. Photosynthesis produces a variety of organic matter, which makes up the majority in the plant body. Lack of carbon dioxide, water, or light can all reduce the growth of crops.

The 13 mineral nutrients from the soil can be divided into three categories:

Macronutrients: nitrogen, phosphorus, potassium.

Medium nutrients: calcium, magnesium, sulfur.

The content of micronutrients is only a few thousandths to a few hundredthousandths of the weight of dry matter. They are seven types of iron, boron, manganese, copper, zinc, molybdenum, and chlorine.

There are 16 types of nutrients that are recognized as essential for plants, and we divide them into macroelements, medium elements, and trace elements. A large number of elements of carbon (C), hydrogen (H), oxygen (O) can be obtained from the atmosphere and water, in general, do not need to be artificially supplemented, nitrogen (N), phosphorus (P), potassium (K) due to the large demand of crops, and the amount of soil in the general soil can be small, must be supplemented by fertilization to meet the needs of crop growth, so we call it fertilizer triad.

Medium elements include calcium (Ca), magnesium (mg), sulfur (S), crops must be absorbed from the soil, the general soil is rich in these three elements, do not need artificial supplementation.

There is also a group of elements called trace elements, including iron (Fe), copper (Cu), manganese (Mn), molybdenum (Mo), zinc (Zn), boron (B), chlorine (Cl) because plants need them very little. Although the amount required is small, the soil also contains low levels of these elements, so fertilization is sometimes required to meet the needs of the crop.