The analysis on relationship between factors of rice yield component and rice quality traits indicated that most factors of yield constituent effect rice quality traits obviously in different cultivation methods. Rice valid panicle numbers in unit area had a significantly positive correlation with percentage of head milled rice, and had a supreme significantly positive correlation with protein content, but had a significantly negative correlation with chalkiness of rice and amylose. The result also showed that the correlation was supremely positive significant between grain numbers and percentage of head milled rice; filled grain numbers significant positively correlated with protein content; 1000-grain weight positively correlated with amylose significantly. Therefore, it is important to promote valid panicle numbers per plant in the procession of rice cultivation in order to get high quality of rice.
