This paper, taking the turpan region is widely used in the production of tomato main cultivated varieties of east SAN glory, and thick skin early feng, FA-1420, st dragons as the research object, through pot experiment, dealing with three different soil moisture gradient drought, the soil relative water content were 80%(CK),60%(moderate stress),40%(severe stress), respectively, to determine the phenophase, relative electric conductivity, and high quality index. Studied under different soil moisture gradient...