Method for identifying water-saving property of winter wheat

The invention discloses a method for identifying the water-saving property of winter wheat. According to the method, the water-saving property of the winter wheat is identified on the basis of a water-saving index of unit-area root activity. The activity water saving index of the unit area root is calculated through the following formula: RAWSI=RAS.T *RAS.W*RACK.W*(RACK.T ), wherein RAWSI is the water-saving index of the unit area root activity, RAS.T is the water-saving treatment unit area root activity of the to-be-tested material, RAS.W is the water-treatment unit area root activity of the to-be-tested material, RACK.W is the water-treatment unit area root activity of the control variety, and RACK.T is the water-saving treatment unit area root activity of the control variety. According to the method, screening is performed by utilizing the water-saving index of the unit area root activity, so that the screening accuracy can be ensured, the screening time can be shortened, and a new method is provid