Question

Дождевые черви играют большую роль в создании гумуса. За год они переворачивают более 30 тонн почвы. Найди примерную массу червей на 1 га чернозема, если средняя масса червя составляет 5 грамм, а общее количество червей 140 тысяч.

Answer 1

140000*5=700000 грамм или 700 килограмм

Answer 2

The Role of Earthworms in Soil Formation

Earthworms play a significant role in the creation of humus, which is a vital component of soil. Humus is a dark, organic material that forms as a result of the decomposition of plant and animal matter. It is rich in nutrients and helps improve soil structure, water retention, and nutrient availability for plants.

Earthworm Activity and Soil Turnover

Earthworms are known for their ability to burrow through the soil and consume organic matter. As they move through the soil, they ingest soil particles and organic material, breaking them down in their digestive system. The process of digestion and excretion by earthworms results in the formation of casts, which are small mounds of nutrient-rich soil.

The activity of earthworms helps to aerate the soil, improve drainage, and enhance nutrient cycling. Additionally, their burrowing and feeding activities contribute to the turnover of soil, bringing deeper soil layers to the surface and mixing them with organic matter. This process is essential for the formation of humus and the overall fertility of the soil.

Estimating the Earthworm Population on 1 Hectare of Chernozem Soil

To estimate the approximate mass of earthworms on 1 hectare (10,000 square meters) of Chernozem soil, we can use the given information about the average mass of an earthworm and the total number of earthworms.

Given: - Average mass of an earthworm: 5 grams - Total number of earthworms: 140,000

To calculate the total mass of earthworms on 1 hectare, we multiply the average mass of an earthworm by the total number of earthworms:

Total mass of earthworms = Average mass of an earthworm * Total number of earthworms

Total mass of earthworms = 5 grams * 140,000

Total mass of earthworms = 700,000 grams

Since there are 1,000 grams in a kilogram, we can convert the total mass of earthworms to kilograms:

Total mass of earthworms = 700,000 grams / 1,000

Total mass of earthworms = 700 kilograms

Therefore, the approximate mass of earthworms on 1 hectare of Chernozem soil would be around 700 kilograms.

Please note that this is an estimation and the actual mass may vary depending on various factors such as soil conditions, earthworm species, and local environmental factors.

Conclusion

Earthworms play a crucial role in soil formation by contributing to the creation of humus and improving soil structure. Their burrowing and feeding activities help to aerate the soil, enhance nutrient cycling, and increase the turnover of soil. In the case of Chernozem soil, the approximate mass of earthworms on 1 hectare is estimated to be around 700 kilograms.