Abstract: Physiological characters of controlling and saving water technique were studied on root, leaves, yield and quality in winter wheat. The results showed that root system mainly distributed in 0 ～ 40 cm of soil layer, close to 50% of the total root fresh weight. Under the better soil moisture condition before sowing, the treatments"1 water" and"2 water"of controlling the winter water made for root growth, and root growth addition was appeared in 100 ～ 200 cm of soil layer. With filling water supply, root system vigor was increased in flower and filling stage. Controlling water technique not only made for improvement of root system vigor and leaves photosynthetic rate(Pn), but also made for delaying of root senescence and leaves function. On the proper water supply, attention to the input of jointing water and filling water can not only promote the growth of wheat and save water, but also start up a better yield and ecological benefits. For strong gluten wheat, reducing irrigation frequency can improve grain quality.

Key words: Controlling water technique, Winter wheat, Roots, Physiological characters of leaves, Yield and quality

CLC Number: 

• S512.1+1