How do you measure evapotranspiration from a lowland rice field?
If you are talking about Asian rice, it is all the same species, just different varieties. In fact there are 1000's of varieties of rice grown in both upland and lowland systems. Lowland rice is grown in fields that can be flooded and they are either rain-fed or irrigated. Upland rice is grown without flooding usually on hillsides in more mountainous regions. Different countries and regions have their own preferences for varieties of rice.
In paddy fields throughout Southeast Asia and in subtropical climates. A paddy field is a muddy field into which the rice is planted. The field is kept shallowly flooded as the rice grows and ripens by means of an irrigation system. The field is dried for harvest. It can also be grown in areas that are hot and dry as long as the rice paddy gets water everyday. Because rice cultivation is labor-intensive and water-intensive…
Rice grows best in hot and wet tropical and subtropical regions. There are two types of rice - lowland rice is grown in the river basins,deltas and coastal plains while upland rice grown on the terraced hill slopes.Rice requires temperatures of about 25degree celcious during growing seasons, Rainfall required is 150-200cm and the fields should be flooded.Clayey and alluvial soil is required.chemical fertilizers and insecticides are also used.