How to improve alkaline soil, how to improve alkaline soil

Alkaline soil improvement methods:

1. Agricultural measures.

The application of organic fertilizer can increase soil organic matter, promote the formation of aggregate structure, improve the physical properties of soil, and also improve the water storage capacity and temperature status of soil, so as to improve the ability of soil to store and regulate nutrients. Moreover, the organic acids produced in the process of organic matter decomposition can not only neutralize alkalinity, but also activate calcium in the soil, which can play a role in reducing or eliminating alkali damage.

The main sources of organic fertilizer are: green manure (which can be obtained through a large number of planting, varieties such as field cyanine, grass and tree trees, etc.); excrement such as manure, urine and other excretions from people, livestock and poultry; Domestic garbage crop straw crushed and returned to the field.

2. Improvement measures for water conservancy projects.

The main purpose of hydraulic engineering improvement is to reduce the groundwater level, and the method is mainly to drain water through open channels, or to use the method commonly known as "salt washing" to wash saline-alkali soils with water. The practical results of this method show that the soil salt content can be reduced from one time to two uses.

However, water resources in alkalized areas are often scarce, and this approach can be wasteful and outweigh the benefits of increasingly strained freshwater resources. Some scholars have proposed the use of inferior water resources (brackish water, brackish water, geomineralized alkaline water, etc.) for irrigation, which can improve saline-alkali soil and alleviate the current shortage of water resources.

3. Chemical method improvement measures.

Chemical modification of saline-alkali soil refers to the application of chemical agents to alkalized soil. It can change the composition of colloidal adsorption ions in the soil, which in turn can improve the physical properties of the soil, so that the soil structure and permeability are increased. This not only facilitates soil desalination and inhibits salt reflux, but also promotes plant growth.

Commonly used chemical modifiers include superphosphate, gypsum, ferrous sulfate, etc. However, although the chemical improvement method has these advantages, it also increases the soluble sodium ions in the soil solution. If it is not combined with biological and hydraulic improvement measures, it is difficult to achieve the desired effect.

Fourth, plant improvement.

Biological measures are generally considered to be the most effective way to improve saline-alkali land. The introduction of salt-tolerant and salt-washing plants can use plants to drain salt. For example, the willow has a strong tolerance for chloride and other salts.

The structure of the salt glands and pores of the plant itself can take away a large amount of coarse salt from the soil, increase the coverage rate of plants, reduce ground evaporation, and reduce the accumulation of salt.

5. Improvement of microbial agents.

The application of microbial agents is also one of the biological methods for saline-alkali soil improvement. At present, the application of microorganisms in improving saline-alkali soil is mainly about the research on microorganisms promoting alkali and salt tolerance in plants. Improving the rhizosphere environment of plants through the action of alkali and salt-tolerant microorganisms can reduce the inhibition of salt on plant growth, thereby improving saline-alkali soil.

The results showed that the application of active microbial fertilizer in saline-alkali soil could improve the survival rate, biomass, preservation rate, new shoot growth, DBH, chlorophyll content, root development and growth of shrubs and trees.

It is better to use farmhouse fertilizer, that is, the excrement of animals or the decay of plants! However, it will take about two years to produce results, although you can't see the results right away! However, the soil that has been doing this for a long time is not only not easy to turn into acidic soil, but also does not make the soil compact!

If you need it urgently, you can only use chemicals! As long as there is a place that sells pesticides, there will generally be. I recommend using the first.

Lime is often used. To achieve the purpose of neutralizing active acids, latent acids, and improving soil structure.

Alkaline soil can be improved by mixing fermented agricultural fertilizer or humus soil and applying ferrous sulfate, superphosphate, and raw gypsum to the soil.

Apply well-rotted manure, peat, sawdust, edible acid fertilizers, such as lead sulfate, sulfur-type ferrous sulfate, sulfur powder, ammonium sulfate, ammonium nitrate, ammonium chloride, superphosphate, potassium dihydrogen phosphate, potassium sulfate, etc., to neutralize alkalinity.

If it is a potted flower, there are several methods commonly used to improve the nucleus of alkaline soil:

Application of ferrous sulfate: Kilograms of ferrous sulfate can be applied per 10 square meters of open-field flowers, and the pH value of the unit can be reduced after application; For clay heavy soils, the dosage can be increased by 1 3.

Application of vinegar solution: The vinegar applied must be edible rice vinegar, for potting soil with a pH value greater than 7, it can be watered with 150 2004 tone vinegar solution, once every 15 20 days.

Sulfur application: This method is well suited for ground-grown plants, and is characterized by a slower pH reduction, but the effect lasts for a long time. Rent Change Bureau.

Blending coniferous soil: Blending coniferous soil is the most fundamental method of improving alkaline soils. Coniferous soil is made from rotten pine and cypress needles, dead branches and other litter, sawdust, etc., and is highly acidic. Generally, alkaline soil mixed with 1 5 or 1 6 coniferous soil is suitable for acid-loving flower potted plants.

Summary. 2.In fact, rice vinegar is also a kind of thing that can be used for watering, because rice vinegar itself is acidic, and its acidity is not particularly high, so it is very suitable for plants.

3.Changing the alkaline soil can be slightly better by improving, but if the alkalinity is too severe, it is not necessary to improve it, because the repetition is high, so changing the soil for plants is a particularly good method.

Hello, glad to answer for you! How to improve alkaline soil1When we are watering plants, we can add something to the water and then go to water the plants.

For example, orange peel water is a particularly useful water, because orange peel water itself is acidic, so if you use it to water plants, you can adjust the alkalinity.

When using orange water, the first thing to do is to leave the orange peel, and when you usually eat oranges, don't throw away the orange grinder. Keep it, then cut it into pieces, and then put it in a plastic pot bottle for fermentation, and then water the plant after the fermentation is successful, which has a good effect, but it must be diluted in sufficient amount, otherwise the concentration will be too high, and it is not good for the plant shadow to be blindly believed and erected.

2.In fact, rice vinegar is also a kind of thing that can be used for watering, because rice vinegar itself is acidic, and its acidity is not particularly high, so it is very suitable for plants. 3.

Changing the alkaline soil can be slightly better by improving, but if the alkalinity is too serious, it is not necessary to improve it, because the repetition is high, so changing the soil for plants is a particularly good method.