Abstract: The effects of different water treatments on the configuration, physiological characteristics and yield of winter wheat were studied. The results showed that the yield of the wheat variety with a higher ability of drought-resistance was higher under water stress, while that of the wheat variety with a lower ability of drought-resistance was higher under abundance of water. The osmotic adjusting ability of the strong drought-resistance wheat variety was higher. The adaptability of the winter wheat to water stress was realized by the osmotic adjusting mechanism. The decrease of the chlorophyll content of the wheat leaves was caused by water stress. but the chlorophyll content of the wheat variety which had a higher ability of drought-resistance decreased less. The sucrose content of the wheat leaves tended to increase with the decrease of the quantity of irrigation. The superoxide dismutase of the leaves of winter wheat that had higher ability of drought-resistance had higher activity under water stress, and its activity was enhanced with the intensity of water stress.

Key words: Winter wheat, Water, Configuration, Physiological characteristic, Yield