In the paper , if the amount of photosynthesis production accumlating in roots relected by root unit weight , the root unit weight and root activity varied with remained leaf of different leaf order , with marked negative correlation between root unit weiht and root activity 结果表明，当单株按叶序仅留一片叶和不留叶时，有限的光合产物能在根、茎与穗间协调分配，只是穗与根有轻微竞争，且两品种均表现出了相同的趋势。
