Chen Huarong Yunnan is situated on a low-latitude plateau that has a variety of physical features and many variations in climate.
Agricultural production differs dramatically between regions and seasons.
The ricefields are not efficiently used and economic returns could be improved. Full exploitation of the potential productivity of the ricefields could remarkably increase economic benefits. Rice fish cultivation is an important way to increase productivity. The choice of species greatly affects fish harvests, the value of the output, and the economic benefits gained from ricefields. The characteristics of the rice-growing regions in the Yunnan plateau are low temperatures, low water temperatures, shallowly flooded ricefields.