Abstract: Small panicle type conventional rice variety "Yuexiangzhan" and big panicle type hybrid rice combinations "Yueza122" for experiment on the system of rice intensification (SRI) with four transplanting spacings. The result showed that the dense spacing was more width, the growth duration was prolonged, and tiller number of per hill,ear-bearing tiller rate ,total grain of per panicle,(1 000)-grain mass were increased, respectively. The dynamice structure of population including tiller, leaf area index, dry matter production was reduced with the increase of transplanting spacing, but the significant differences between two rice types were found.