The changes in accumulation and partitioning of dry matter and nitrogen were investigated in each organ throughout the growing period of sugarcane variety ROC22. The results showed that the sugarcane exhibited an obvious trend of increase in the accumulation of dry matter throughout the growing period,and the highest accumulating rate was in stem. The accumulation of nitrogen in the whole plant increased from seedling stage to the late jointing stage,and then decreased. The accumulation of nitrogen in stem ...