Abstract:In order to explore the response of growth physiological characteristic and yield of rice to the water consumption process in black soil region, the experiment was carried out by lysimeter at the rice irrigation experiment station of Heilongjiang Province in 2017. The U7(7.6) experiment was conducted to analyze the effects of water consumption at each stage on growth physiological characteristic and yield of rice. The results showed that the water consumption intensity during the growth period of rice generally showed a trend of rising firstly and then decreasing, the maximum water consumption intensity at headingflowering stage was 5.66mm/d; the maximum water consumption percentage during the whole tillering stage was 43.98%, which tended to be stable after the headingflowering stage. The water consumption at the late tillering stage had the greatest influence on dry matter weight of rice leaf; the dry matter weight of stem sheath and spike had significant response to the water consumption at jointingbooting stage and headingflowering stage (P<0.01); the water consumption at the midtillering stage and late tillering stage showed a greatest positive and negative effects on dry matter weight of root, respectively; except for the early tillering stage, the effect of water consumption from the midtillering stage to headingflowering stage on the amount of bleeding of root was represented as ET2, ET3, ET4 and ET5; the water consumption at the midtillering stage, jointingbooting stage and headingflowering stage had a positive effect on Gs and Tr (P<005); the water consumption at the early tillering stage showed a negative effect on Tr (P<0.05); except for ET1, the effect of water consumption from the midtillering stage to headingflowering stage on Ci and Pn were represented as ET5, ET2, ET4, ET3 and ET2, ET5, ET4 and ET3,respectively. The λ at the midtillering stage, jointingbooting stage and headingflowering stage were 0.120, 0.244 and 0.252, respectively, and the water consumption of these three stages had more significant effects on rice yield. The research result would provide a basis for making watersaving irrigation of rice in black soil region.