Soils and the soils of Central Asia
Answers are for parents and teachers.
1
With an adult’s help take a sample of garden or yard soil and describe its colour and whether it feels sandy or clayey.
Depends on the sample.
2
Light gray soil has 1–1.5 and dark gray 2.5–4 percent humus. The dark soil’s upper limit is 4 percent; how many times larger is it than 1 percent?
4
3
Write four ways of raising soil fertility.
Fertilising, irrigating, tilling in time, leaching salts, crop rotation.
4
Using the atlas find the main soil type of your area and write its parent rock.
In most areas gray soil, parent rock loess.