Advertisements
Advertisements
प्रश्न
Distinguish between contour tilling and contour bunding.
उत्तर
Contour Tilling — In this method the farmer tills or ploughs the fields along the contours of the land rather than tilling up and down the slope. Contour tilling is practised in hilly areas rather than the plains. It prevents the soil from being washed away by water or by surface run-off as the contour acts like a bund. The contour also facilitates the percolation of water into the soil.
Contour Bunding — Soil is conserved by making bunds or walls or embankments made of mud along contour lines to prevent water from draining out of the cultivated field, thereby preventing erosion.
APPEARS IN
संबंधित प्रश्न
Explain how soil is formed.
Name any four agents of erosion.
What are the components of topsoil?
Why is soil conservation important? Give three reasons.
The photograph shows a framing method that helps in controlling soil erosion.
- What is this farming method called
- Mention any two other methods that help in controlling soil erosion.
Soil conservation measures are mainly aimed at protecting one of the following?
Unscramble the following jumbled word related to soil.
Unscramble the following jumbled word related to soil.
Match the animals in Column I with their natural place of dwelling (habitat) in Column II.
| Column I | Column II | ||
| (a) | Earthworm | (i) | Sand and beaches |
| (b) | Garden lizard | (ii) | Burrows in soil |
| (c) | Crab | (iii) | Deep, narrow holes in dry soils |
| (d) | Rodents | (iv) | Surface of soil |
| (e) | Scorpion | (v) | The surface of shaded moist soils |
| (f) | Snails and slugs | (vi) | A horizon of moist soils |
Several terms related to soil are hidden in the squares given in Figure 9.2. Spot them and make a list. Two examples are given for you.
