The main function of the earth is fertility. Due to this, various types of flora grow from it, since nutrition, the need for air and moisture are satisfied, and normal life is ensured. Fertility appears when some soil components interact.
- potassium salts;
Depending on the chemical composition, the fertility of the earth can be estimated. This also determines the type of soil. Not all types of soil are highly fertile, so some species are valued more than others, such as chernozems. Depending on where the soil is fertile, people have settled there since ancient times. Perhaps the presence of a nearby reservoir and fertile land - these were the main conditions for the formation of settlements for people.
What affects the fertility of the earth
Soil is such a false system that develops according to its own law. The problem also lies in the fact that the land is being depleted quickly, but it is being restored and formed slowly. During the year, 2 millimeters of soil appears, so it is a particularly valuable natural resource.
In order to maintain fertility, it is necessary to carry out such actions:
- provides an optimal water level (does not lead to aridity, but also does not fill the soil);
- rational use of fertilizers and agrochemicals;
- if necessary, use the irrigation system;
- control the evaporation of moisture;
- reduce the accumulation of sodium and various salts.
Putting all this into practice in agriculture and other areas related to the use of land, it will be possible to maintain soil fertility. Alternating crops of different crops is also recommended. Once every several years (3-4 years) you need to give the soil a "rest". At this time, for example, you can sow it with annual herbs and medicinal plants.
Fertility is affected by pollution. If possible, all possible sources of pollution should be eliminated. Where the area is closer to the wild, fertility is at a high level. Fields within cities and in the vicinity of them, in the vicinity of industrial enterprises, highways lose their fertility.
Thus, fertility is the ability of the earth to give life to plants. This is used by humanity for growing crops. The land cannot be exploited intensively, otherwise fertility will decline, or even disappear altogether.