The Correlation of Rice Yield and Its Components

Rice yield is composed of panicles, grains and grain weight. The experiment results showed: The grains per panicle of big panicle variety had positive correlation(R=0.7220* ); Panicles/M2 had positive correlation with yield (R=0.0236). The panicles and grains per hill of multi-panicle variety had positive correlations with yield (R=0.6913* and 0.7321* ),respectively. In the condition of climate in Jilin Province, the tillering ability of multi-panicle type correlated closely with yield, and these kinds of varieties adapted to good invironments and could have high yields. The varieties with long panicles adapted to middle level environments, and could have stable yields. So it is very important to use suitable cultivation method according to different variety types.