37.15. Special Case: Paddy Fields

Try these first

1. 1.

   What is the significance of standing water in paddy fields?

   Hint

   Think about what helps rice grow without competition.

2. 2.

   Define percolation losses.

   Hint

   Consider what happens to water that seeps into the ground and isn't utilized.

3. 3.

   What is the maximum percolation loss that can occur in paddy fields?

   • 2 mm/day
   • 5 mm/day
   • 10 mm/day

   Hint

   Recall the specific figures mentioned regarding water loss.

4. 4.

   True or False: Alternate Wetting and Drying can help reduce water usage in paddy fields.

   • True
   • False

   Hint

   Consider the implications of water management strategies.

5. 5.

   Design an irrigation plan for a 1-hectare paddy field incorporating bunds and AWD. Consider the water requirements, percolation losses, and maintenance needs.

   Hint

   Think about how bund requirements change with different soil types.

6. 6.

   Analyze local paddy farming practices. Identify three potential improvements in water management techniques.

   Hint

   Consider community attitudes towards change and willingness to adopt new practices.