Effects of Different Transplanting Density on Yield and Yield Component of Japonica Rice in Cold Region
"Songjing 6"and super rice vatiety"Songjing 9"from the cold zone were used in this experiment to study effects of different transplanting density on the yield and yield component of Japonica rice.The results showed that the effects of different transplanting density on their 1000-grain weight was relatively less than those on spike number per hill and kernel number per spike.In the area of the first accumulated temperature zone of Heilongjiang Province,the optimum transplanting density for Songjing 6 was 30×13.3cm,and that for super rice Songjing 9 was 30×16.7cm.
DensityJaponica rice in cold regionYieldYield component