To further explore the effect of major factors on the yield of a line of japonica x indica hybrid rice, to clarify technical approaches to high efficient high yield production, the author analyzed 237 groups of data from 9 years in 6 counties of Taizhou. With correlation, regression, and path analyses, effects of major economic traits on the yield were determined.  An effective approach to high efficient high yield production is to increase a seed setting rate and to produce large panicles while ensuring the number of productive panicles.