Now the soil problem is very big, how to distinguish the soil from acidic soil and alkaline soil?

Soil pH is directly related to the fertilizer and yield of planted crops, in order to obtain high yield, through soil testing, judge the soil properties, according to the actual situation and then with the corresponding soil testing formula fertilizer, can fertilize the soil.

1.Acidic and alkaline soils are judged by the soil source.

The soil in the mountain forest, the humus of the ravine, is generally black or brown soil, relatively loose, fertile, good permeability, and is a very good acidic humus. Such as: pine needle humus, peat, humus, etc.

2.Acidic and alkaline soils are judged by surface plants.

When collecting soil samples, you can observe the plants growing on the surface, and the soil where pines, cedars, and rhododendrons grow is mostly acidic soil; The soil of millet, sorghum and halogen is mostly alkaline soil.

3.Acidic and alkaline soils can be judged by soil color.

Acidic soils are generally darker in color and mostly black-brown, while alkaline soils are mostly light-colored in color such as white and yellow. In some saline-alkali areas, there is often a white layer of saline-alkali on the soil surface.

4.Acidic and alkaline soils can be judged by the feel.

Acidic soil is generally soft in the hand, and the soil is easy to spread out after loosening, and it is not easy to agglomerate; Alkaline soil feels quite firm in the hand, and it is easy to clump and not spread out after letting go.

5.Acidic soil and alkaline soil can be judged by the state after watering.

After watering, acidic soil infiltrates quickly, does not bubble white, and the water surface is muddy; After watering, alkaline soil infiltrates more slowly, white bubbles and white foam on the water surface, and sometimes there is a layer of white alkaline substance on the surface.

6.Acidic and alkaline soils are judged by texture.

Alkaline soil is loose in texture and has strong air and water permeability; Acidic soils are hard and tend to clump together, and the soil is prone to compaction.

7.Acidic and alkaline soils are judged by pH test paper.

Put a little soil sample into distilled water, dissolve it for a while, put the pH test strip in it and let it stand for 2 seconds, and then take it out and compare it with the color card. pH>7 is alkaline soil, and pH<7 is acidic soil.

To distinguish whether the soil is acidic or alkaline, the soil can be leached with distilled water or deionized water, and then the acidity and alkalinity of the soil can be measured with pH test paper or pH meter. Hope.

1. The method of judging whether the soil is acidic or alkaline: look at the soil color: the acidic soil is dark in color, mostly black and brown, and the alkaline soil color is mostly white and yellow.

2. Look at the soil source: humus soil collected from mountains and rivers and ravines is mostly black-brown.

3. Look at the texture: the acidic soil has a loose texture and strong air permeability; Alkaline soil is hard, easy to form lumps, and has poor aeration and water permeability.

4. Acidic soil is not easy to agglomerate; Alkaline and prone to agglomeration.

1. Look at the soil**.

Usually we commonly use the flower soil is humus soil, humus soil is loose and fertile, plus pine needles, river sand, cinder these substances are very good air permeability, is very suitable for pothos, spider plant and other plants to grow acidic soil.

2. Look at the color of the soil.

Acidic soils are usually blackish-brown with a darker color; The alkaline soil is light in color, generally white and yellow, and a layer of white powdery alkaline material can be seen in the soil.

3. Look at the texture of the soil.

Acidic soils are usually loose and fertile, with very good air and water permeability, and plants such as rhododendrons and Milan prefer to live in acidic soils; Alkaline soil is very hard, usually permeable to water and air permeability, easy to agglomerate, for example, pear trees, jujube trees, figs are more suitable for planting in alkaline soil.

4. Look at the surface material.

When we go outside to pick flower soil, we observe the plants growing on the surface, generally like pine and cedar plants are mostly alkaline soil, while the soil of sorghum land and millet field is alkaline soil.

5. Touch with your hands.

When we can distinguish whether the soil is acidic or alkaline, we can touch it with our hands and feel that the acidic soil is very soft in our hands, and it is easy to spread out after letting go, and it will not agglomerate; Alkaline soil is very strong in the hand, and it is not easy to spread out when you let go, and there are agglomerations.

6. Watering observation.

Another way is to distinguish by watering, acidic soil watering seeps faster, the water surface is more turbid, and alkaline soil seeps more slowly, and there will be some white bubbles on the water surface, and there will even be a layer of white alkaline substance.

Identifying whether the soil is acidic or alkaline can be judged by pH test paper, soil source, soil color, and surface plants.

1. Use pH test paper to measure the acidity and alkalinity of the soil: take part of the soil sample and soak it in cool boiled water, soak part of the test paper in the soaking solution, take it out, observe the change of its color, and then compare the test paper with the color card, if the pH value is 7, the soil is neutral; If the pH value is small, it is acidic; If the pH is 7, it is alkaline.

2. Look at the soil source: the humus soil generally collected from mountains and rivers and ravines is mostly black-brown, relatively loose and fertile, with good permeability, and is an ideal acidic humus. Such as: pine needle humus, peat, humus, etc.

3. Look at the soil color: acidic soil is generally darker in color, mostly black-brown, while alkaline soil is mostly white, yellow and other light colors. In some saline-alkali areas, there is often a layer of alkaline white powder on the soil surface.

Fourth, look at the surface plants: when mining flower soil in the wild, you can observe the plants growing on the surface, generally growing wild rhododendrons, pines, cedar plants in the soil is mostly acidic soil; The soil where Tamarix, Millet and Sorghum grow is mostly alkaline soil.

Improvement methods for alkaline soils

1. If you want to improve alkaline soil, you can use acidic fertilizers, such as ammonium sulfate, ammonium nitrate, ammonium chloride, superphosphate, potassium dihydrogen phosphate, potassium sulfate, etc.

2. It can also be improved by planting alkali-tolerant crops, such as cotton, leguminous crops, hemp, underground fruiting crops, wheat, etc.

3. You can also reduce the water level by deepening the deep ploughing layer and supporting the three ditches, and wash the alkali year by year.

4. Or apply more farm fertilizer to improve the soil, cultivate soil fertility, and enhance the affinity of the soil.