Upland rice is rice grown on dry soil. Most rice is grown in flooded rice paddies. It is grown in rainfed fields prepared and seeded when dry, much like wheat or maize. The ecosystem is extremely diverse, including fields that are level, gently rolling or steep, at altitudes up to 2,000 meters and with rainfall ranging from 1,000 to 4,500 millimeters annually.
In Thailand , mostly grow in the North, South, East and Northeastern.
