How the soil purifies the water source and how the head of water in the soil layer is determined

The soil generally has a granular structure like sponge, which is strong and microporous, has a strong adsorption capacity and filtration ability, and can filter out various impurities such as rotting corpses, sand, dust and odor of animals and plants in the water, but can not remove various ions contained in the water, if the water in the place where the underground flows contains less calcium, magnesium, sulfate ions, nitrate ions, chloride ions, etc., such groundwater has a sweet, clear and cool feeling. We have a "Huangxing Avenue" here There is a small mountain spring on the side of the road, and people passing by are here to receive water, and pass it on.

Ten, ten spread hundreds, many people drive to pick up water, it is really another scenery!

Soil is the most adsorptive substance in nature, it can adsorb and decompose other substances, such as tastes, bacteria, corrosives, etc.

For example, in the wild, we often encounter the stench of decomposing animal carcasses, as long as the carcass is covered with a thin layer of soil, the stench is gone.

Therefore, the soil plays a role in adsorption, filtration and decomposition of water polluted by man-made domestic waste, so the water from the well can be directly quoted.

However, the soil cannot adsorb and decompose the iron and manganese that exist in the soil, so the water in the well cannot be used if the iron and manganese content is too high.

Tell you succinctly.

Because copying that whole bunch doesn't work, right?

Soil contains a lot of heavy metals and microorganisms.

Heavy metal filtration magnetizes a small number of microorganisms in passing a pass.

So generally the groundwater is very clean.

Hit it and drink it directly.

Soil voids adsorb impurities in water.

Soil particles are negatively charged, which can condense heavy metal ions in water.

It's the same as filtration, but there's also charged adsorbent substances.

When the groundwater level is high, it can be determined by digging a probing pit. When the water table is low, it can be determined by drilling.

It's still water level.

The best way to do this is to plant cover vegetation; In addition, the content of soil organic matter is increased.

When there is little water in the soil, the main changes in the roots are: 1. first expand the distribution of lateral roots, 2. then start the elongation of the taproot.

The exuberance of the lateral root system is much more pronounced than that of the taproot.

The roots do not actively retain water, water retention is regulated by the leaves, and when water is scarce, the plant closes the stomata on the leaves to reduce transpiration.

When the water content in the soil is very low, the plant absorbs very little water from the soil, which cannot meet the needs of transpiration in the aboveground part, and the root plant will lose water and dry up and die after a long time.

It's delicious but mineral water.,Don't forget to dig wells.,Always thank the subtitle group.,I'll blow if I want to whistle.。

Water can be said to be the source of life of the soil, as long as there is water in the soil, all things can be born in the soil!

Plants can grow with water in the soil, and plants can sustain the biosphere. What do you want to know?

Is there any deeper meaning to these questions? You don't want to know about the five elements of each other, do you?

Experimental principle: The process of obtaining only a certain type or strain of microorganisms from a mixed microbial population is called the isolation and purification of microorganisms. Commonly used separation and purification methods: single cell picking method, dilution coating plate method, dilution mixed plate method, plate marking method Dilution coating plate method steps:

Pour plates, prepare soil sewage diluent, coat, culture, pick colonies; Plate scribing method: invert the plate and mark the medium name with the streak.

Dig holes in pots, loosen the soil, or squeeze out the water and pour it out. (You can also fill in some more soil).

Because the water will seep through the land.

In addition to surface water, there is also groundwater, and it is fluid and variable.

There is also oil, gas, coal, **. Why?

Read a junior high school textbook.