The photosynthetic intensity of the normal Zizania Latifolia latifolia showed the first high peak at the first tillering stage, and descended later, there are no peak in the second tillering stage.

• 正常茭叶片的光合强度在第一次分蘖盛期出现第一个高峰，随后下降，二次分蘖期光合强度并没有出现峰值。