How to improve the soil in saline alkali land? How to turn the soil into saline

1. Chemical improvement:

Chemical modification of saline-alkali land.

Chemical improvement mainly refers to the addition of chemical substances to the soil to achieve the purpose of reducing soil pH, alkalinization and improving soil structure.

The main chemical amendments include gypsum and phosphogypsum.

Desulfurization gypsum, sulfur, humic acid.

Furfural residue and other substances. A large number of studies have proved that the combination of chemical improvement and other improvement measures can achieve extremely significant improvement effects in severely saline-alkali land.

2. Physical improvement.

Physical improvement can destroy soil capillary action by leveling the land, external soil, sand compression, soil loosening, field uplifting, etc.

Prevents further accumulation of salt on the surface. The large amount of open soil engineering, high cost and uneconomical cost are important reasons restricting its popularization and application.

3. Improvement of biology.

The soil of biologically improved saline-alkali land is barren and poorly fertile. Therefore, in the process of transformation, planting paddy fields and salt-tolerant crops to increase soil organic matter content is an important measure to improve salinity.

4. Improvement of water conservancy projects.

According to the law of "water-salt movement", the improvement of hydraulic engineering can prevent resalinization through underground infiltration pipe drainage, combined with ditches and deep wells.

Hazards of saline-alkali land:

1. Endanger the growth of crops and hinder the development of agricultural production.

The content of soil organic matter was relatively reduced. Soil salinization.

It inhibited the growth process of forage grass and the accumulation process of soil organic matter, which made the content of soil organic matter relatively low, and affected the physical and chemical properties of soil.

2. Soil solution directly poisons crop cells.

Due to the high concentration of saline soil solution and high osmotic pressure.

It reduces the ability of crops to absorb water and nutrients, and also reduces the ability of plant roots to selectively absorb nutrients.

So a large number of ions enter the body, and nutrients and ion absorption are reduced or absorbed by nutrients, disrupting the normal ion balance.

In the body, interfere with normal metabolic functions, damage to crops, protein synthesis and hydrolysis, due to the accumulation of ammonia and soluble salt ions in the body, produce ionic toxicity, endanger the growth and development of crops, and even death.

3. Insufficient crop growth causes seedlings, yield reduction, and death.

According to general statistics, there is no shortage of seedlings for crops in non-saline-alkali land, and the yield is normal. Seedlings in lightly salinized soil decreased by 10 20 (average 15), seedlings in medium salinized soil decreased by 20 50 (average 35), and seedlings in heavily salinized soil decreased by 50 80 (average 65). Salinized soils can only survive on their own and are not harvested.

According to the planting area of salinized surface in irrigation areas and the current crop planting ratio, it is roughly estimated that the annual crop loss in each irrigation area of agricultural district 1 is 44 million kilograms, about 500 million yuan, and the planting loss caused by salinity is 700 million yuan, accounting for 26 percent of the total agricultural output value.

The above content refers to: People's Daily Online Methods and measures for saline-alkali land improvement.

The above content reference: Encyclopedia Saline-alkali land.

1. Before planting seedlings, the general greenhouse will be stuffy shed, mainly to eliminate harmful bacteria, but at the same time, the beneficial bacteria are also eliminated, so at this time, if we apply organic fertilizer, if we do not supplement the beneficial bacteria, the organic fertilizer will not play a role, resulting in poor soil.

2. If the beneficial bacteria are applied alone, it will cause the beneficial bacteria to not survive, if it is used with manure organic fertilizer, because the beneficial bacteria have the characteristics of fixed-point reproduction, if the manure we use is not good, it will cause the beneficial bacteria to not play a role.

Therefore, for the use of manure organic fertilizer, it is recommended that you choose to use biological bacteria to ferment good, such as sheep manure organic fertilizer, sheep manure organic fertilizer fermented by biological bacteria, applied to the soil can not only solve the problem of element antagonism, but also supplement the soil with beneficial bacteria and quickly provide nutrients for soil and plants through the decomposition of sheep manure by beneficial bacteria, and improve the soil well.

Soil salinization is serious, in addition to reasonable fertilization, we must use the organic fertilizer fermented by biological bacteria well, so that the soil will be used better and better, and the choice of manure is very important.

The methods of soil improvement in saline-alkali land are as follows:

1. Deep cultivation and improvement. It is a very simple method to plough the saline-alkali soil that needs to be improved, about 30 to 40 cm.

The requirement is that there are no large clods in the land, and the soil should be as fine as possible. When deep ploughing, it should be carried out vertically and horizontally many times as much as possible, and the depth of deep ploughing and the fineness of the soil should be satisfied.

2. Biological improvement. You can plant some salt-tolerant plants in saline-alkali land, such as yueji, wolfberry, white wax and so on.

When planting, you can apply some fungus fertilizer, which can improve the fertility of the land, so as to reduce the evaporation of water, which can also have a good effect.

3. Improvement of soaking fields. It is necessary to establish a system that separates irrigation and drainage energy, and to control the water level under the bottom of the water level.

The soil is watered, soaked for about two days, drained, repeated two or three times, and then dried. At this time, check whether there are salt crystals in the soil, and if so, you should continue to soak in water.

1. Carry out deep ploughing: deep ploughing in the plot to a depth of 30-40 cm to strengthen the air permeability of the soil. 2. Planting plants:

Planting yueji, wolfberry, etc. in saline-alkali land to reduce water evaporation. 3. Soaking field improvement: irrigation and soaking in the field to reduce the salinity in the soil.

4. Chemical improvement: use gypsum, alum and other improvers.

1. Carry out deep ploughing

Saline-alkali land improvement, first of all, it is necessary to carry out deep ploughing of the land, loosen and rake the large condensed soil clods to ensure that the soil is loose, and pay attention to the depth of 30-40 cm, which is conducive to improving the permeability and drainage of the soil.

2. Plant plants

In order to improve saline-alkali land, you can plant some saline-alkali tolerant plants, such as moon flowers, wolfberry and white ash, etc., and apply fully decomposed farmhouse fertilizer in the soil to increase the organic matter content in the soil and reduce water evaporation.

3. Improvement of soaking fields.

To improve saline-alkali soil, we should establish a system that separates irrigation and drainage, control the water level at the bottom, irrigate the land, soak it for about two days and then drain it, repeat it two or three times and then dry it to drain the salt in the soil.

4. Chemical improvement

Apply gypsum, alum and other amendments to alkaline soil, alkalized soil, soda salt soil, reduce or eliminate soil alkalinity, improve soil physical and chemical properties, pay attention to various measures to pay attention to both comprehensive use, but also to adapt measures to local conditions, in order to achieve the expected results.

1. The easiest way to turn soil into saline-alkali soil is to apply excessive salts or alkaline compounds to the soil.

2. The reason for the formation of saline-alkali land: all kinds of saline-alkali soil are formed under certain natural conditions, and the essence of its formation is mainly the redistribution of various soluble salts in the horizontal and vertical directions, so as to bend and gradually accumulate salt on the soil surface in the salt-collecting area.

3. Characteristics of saline-alkali soil: saline-alkali soil is a general term for saline soil and alkaline soil. Saline soil mainly refers to salinized soil with high chloride or sulfate content, and the soil is alkaline, but the pH value is not necessarily high.

Alkaline soil refers to the soil containing carbonate or heavy phosphate, the pH value is high, the soil is alkaline, the first bend of the saline-alkali soil has less organic matter content, low soil fertility, poor physical and chemical properties, more anions and cations harmful to crops, and crops are not easy to promote seedlings.

Summary. Hello, the improvement of saline soil with clay soil can have a certain effect, but it is not the most ideal way. Argillaceous soil has high water retention and good fertilizer retention, which can improve the soil structure and water status of saline-alkali land, thereby helping to improve the productivity of saline-alkali land and reduce the degree of soil salinization.

However, argillaceous soils are not the best option because they are less drainable and prone to salinization and alkalinization.

Hello, the improvement of saline soil with clay soil can have a certain effect, but it is not the most ideal way. The argillaceous soil has high water retention and good fertilizer retention, which can improve the soil structure and water status of the saline-alkaline land, thereby helping to improve the productivity of the saline-alkali land and reduce the degree of soil salinization. However, muddy soils are not the best option because they have poor drainage and are prone to salinization and alkalinization.

Fellow, I really didn't understand, I can be more specific.

In the improvement of saline-alkali land, the best method is to carry out the soil Zen Ruchong profile to return to the original area, that is, to dig out the surface saline soil and mix it with the deep soil to form a mixed soil layer. This method can effectively reduce the stain degree and pH value of the saline soil layer and the soil below it, improve the soil structure and fertility, and thus improve the soil quality and productivity of the saline-alkali soil. Section restoration requires professional technology and equipment, so it is necessary to hire a professional team to carry out the construction.

Summary. Hello dear, saline-alkali land improved nutrient soil is a kind of soil amendment specially used to improve saline-alkali land, which can improve soil fertility and improve soil structure, thereby promoting plant growth. Therefore, if you need to improve the soil in saline land, improving nutrient soil in saline land is a very effective option.

However, soil testing and application planning are required prior to use to ensure proper use and desired results.

Hello dear, saline-alkali land improved nutrient soil is a kind of soil amendment specially used to improve saline-alkali land, which can improve soil fertility and improve soil structure, thereby promoting plant growth. Therefore, if you need to improve the soil of saline-alkali land, saline-alkali land is a very effective choice. However, prior to use, soil testing and application planning need to be carried out according to the actual situation to ensure that the correct application is correct and the desired effect is achieved.

The azaleas I bought are going to die, and I heard that changing the soil and changing the pot may live, so I bought a bag of nutrient soil, and it was written on it that the saline-alkali improvement was made, can it be used? Is it acidic.

Hello dear, the salinity improvement written on the nutrient soil means that it can improve the salinity of the soil and make the soil more suitable for plant growth. However, rhododendrons need to be grown in acidic soils, so whether nutrient soil is acidic or not depends on the specific product description. If the nutrient soil is not acidic, it is recommended to purchase acidic soil specifically for azaleas or add acidic fertilizers to improve the acidity of the soil.

At the same time, it is also necessary to pay attention to the root system of the rhododendron to avoid damaging the root system.

The flowers have been pulled out, what can I do if there is no acidic soil? Wouldn't it take another three days to buy it online? What to do?

Hello dear, if you don't have acidic nutrient soil, you can consider the following methods:1Use acidic fertilizers:

Adding acidic fertilizers to pots can help increase the acidity of the soil. Common acidic fertilizers include ammonium sulfate, potassium sulfate, etc. 2.

Use acidic substances: Adding acidic substances to the pots, such as Bibikan vinegar, lemon juice, etc., can also help to increase the acidity of the soil. 3.

Use acidic additives: Adding acidic additives such as iron sulfate, copper sulfate, etc., to pots can also help improve the acidity of the soil. 4.

Adjust the pH of the soil: Use pH test paper to test the pH of the soil, if it is too high, the slag can be reduced by adding acids or additives. The above methods can temporarily solve the problem of lack of acidic nutrient soil, you can go to the local store that sells goods to ask your relatives, and it will affect the long time of buying online.