Productivity of rice is more on temperate compares to tropical region ?
Net assimilation rate = photosynthesis – respiration
- Ligt intensity is highert in temperate region.
- Light duration is higher in temperate region , around 15 hrs a day.
- Night temperature : Day and night temperature fuctuation is lower in temperate region which reduces the rate of respiration , consequently reduces NAA.
- Crop duration is longer which provide tie , oppurtunity for assimilation of assimilates from source to sink.