3.(3)12 specieses are in the batt period its photosynthetic rate exsitting big difference, bud period photosynthetic rate average worth for 31.74 μmol·m~(-2)·s~(-1), batt period is 25.28 μmol·m~(-2)·s~(-1), in the flower bell period 12 speciese’s difference of photosynthetic rate does not show the markedness , but should the period its photosynthetic rate worth is biggest, come to 34.87μmol·m~(-2)·s~(-1).
(3)12个品种在絮期光合速率存在较大差异,蕾期光合速率平均值为31.48μmol·m-2·s-1,絮期为25.28μmol·m-2·s-1,在花铃期12个品种间的光合速率差异不显著,但该时期光合速率平均值最大,达到了34.87μmol·m-2·s-1。