Known as Asian rice, is the plant species most commonly referred to in English as rice
Most important Food in Chinese History
Earliest found in 8200 years ago
Major food of half of the world population
Outside Threat
Problem
Liao Dynasty
Jin Dynasty
Lack of cultivate filed in North
Southern Cultivation too far away
Invaded by neighboring countries
Weather
Medieval warm period
Sunshine intensity
Increase Temperature
Drought
Champa Rice
New Method
Champa rice is a quick-maturing, drought resistant rice that can allow two harvests, of sixty days each in one growing season.
Originally introduced into Champa from Vietnam, it was later sent to China as a tribute gift from the Champa state during the reign of Emperor Zhenzong of Song (r. 997–1022).