Atmospheric inputs affecting the farming system

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Atmospheric inputs affecting the farming system

• 6A (27) NG CHUN FAI

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Inputs

• Solar energy
• Temperature
• Humidity and rainfall
• Wind
• Other atmospheric input

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Solar energy(sunshine)

• Solar energy become more when it is near the
  equator and change with seasons.
• Photosynthesis
• Farmers will decisions under different
  condition..
• Good sunshine helps lower the moisture content of
  grain crops.
• For China and Hong Kong, they have subtropical
  monsoon climate and high solar energy,
  vegetables, fruit and rice are main farm
  produces.

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• For Australia,solar energy is less important
  because it aims at both wheat growing and sheep
  rearing.
• Too much sunshine may interrupt the grow of
  crops.

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Temperature

• 18-25C
• Different crops and animals need temperature
  requirement.
• For example
• rubber-equatorial temperature
• sugar beet-cool temperature.
• Too low temperature may kill the tissues of crops
  and too high temp. no rains may cause
  drought.(Australia)

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Humidity and rainfall

• Low humidity is bad to plants.
• Rain can be used for irrigation.
• Too much rain may cause flooding.
• (when typhoon comes,it bring a lot of rain
  water and always cause flooding in S.China and
  N.T in Hong Kong)

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Wind

• Wind is also important to farming.
• Strong wind may lead to structural damage, soil
  erosion as the rate of evapotranspiration
  increase.Animals need to eat more food to avoid
  loss of body heat.
• Light wind carries carbon dioxide to plants.

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Other inputs

• Burning of trees for shifting cultivation bring
  ash. (example are those people who live in TRF)
• Nitrogen