Water plays an important role in growth and development, yield and quality of potato. Water is required in large quantity for potato growth and development, but generally lack in the soil, and has to be appropriately supplied to meet the needs for its normal growth. Study the water requirements characteristics is the prerequisite and basis for rational irrigation of potato production. The water requirements characteristic of potato was summarized according to some relevant literature in this article, which included the water requirements and suitable soil moisture index for potato in growth period. Moreover, the effects of drought strees and supplementary water on physiological and biochemical reaction, growth and development, yield and quality of potato were introduced. Finally, the further research topics of water requirements in potato were also proposed.
