速率值 meaning in Chinese

rate value

When the change of radiation environment has instantaneous change , the photosynthetic rate ca n ' t reach the rate that it should be in the changed situation . that is called the photoperiodic induction . usually the time of the photoperiodic induction is from 3 minute to 8 minute
当叶片所处光环境的光强和光质发生瞬时变化后叶片光合速率通常都要经过3 8分钟适应才能达到变化条件下应有的光合速率值。
Were 4 . 03 times higher than that of cytoplasm under 600mmol / lnacl and the na + in vacuoles of zea mays were 2 . 98 times higher than that of cytoplasm under 100mmol / lnacl . 4 . the effect of salt - treatment on the pn , fv / fm and fv / fo . the photosynthesis rate of salicornia bigelovii torr
盐处理对两种植物光合速率及fv fm 、 fv fo的影响一定盐度促进了海蓬子的光合速率，在300mmol lnacl处理时，光合速率值最大，为对照的144 . 7 ，在600mmol lnacl处理时，光合速率值下降，为对照的92 . 2 。