Effects of different irrigation methods on production of precision hill-direct-seeding super rice

The object of this study was to explore the total water requirement of precision hill-direct-seeding super rice daring the entire growth period and the effect of different irrigation amounts on the yield components of super rice, the field experiment was conducted to study the effect of different irrigation methods on the production of precision hill-direct-seeding super rice, Yuxiangyouzhan (super inbred rice) and Peizataifeng (super hybrid rice). The results showed that: although the water amounts of precision hill-direct-seeding sub irrigation less than that of Precision Hill-direct-seeding conventional irrigation by 23.51%, and less than that of transplanting conventional irrigation by 30.46%, there was no significant difference on their yield between precision hill-direct-seeding sub irrigation and precision hill-direct-seeding conventional irrigation, the theoretical yield of them was higher than transplanting conventional irrigation by 7.75% and 9.62% respectively, the real yield was higher than transplanting conventional irrigation by 9.18% and 8.09% respectively. The dry weight and leaf area index of precision hill-direct-seeding sub irrigation was higher than other treatments. These results showed that the sub irrigation was beneficial to high yield formation of precision hill-direct-seeding super rice.