相对湿度降低，净光合速率也降低。
Decreased relative humidity induces decreased net photosynthetic rate.
上部叶片较小且光合速率较低。
The upper leaves are smaller and with lower photosynthetic rate.
气孔导度与净光合速率具有相关性。
Meanwhile, the stomatal conductance was related to the net photosynthesis rate.
尤其是相对光合速率的增高更为显著。
Especially, the rate of relative photosynthesis increases distinctly.
研究了光合速率测量系统。
结果表明，水分胁迫使欧李光合速率下降。
The result showed: In water stress, the Pn (photosynthetic rate) decreased.
磷酸蔗糖合成酶活性与光合速率变化基本一致。
对苗期遮荫的敏感性反应，光合速率强于叶绿素含量。
For sensibility response to shading in seedling period, the photosynthetic rate was stronger than chlorophyll content.
植株感染病毒后，不同叶龄的叶片光合速率都会降低。
After plant infect with the virus, a photosynthetic rate of leaf of different leaf-age will lower.
供应大量元素是维持正常叶绿素含量和光合速率所必需的。
It was necessary for maintaining normal chlorophyll content and net photosynthetic rate to supply macroelements.
低温和低光照强度均可成为人参叶片光合速率的限制因子。
Low temperature and low light intensity were limited factors for photosynthetic rate in leaves of Panax ginseng.
夏大豆绿色豆荚的光合速率很低，而子叶的光合速率却较高。
The NPR of green pods was very small, and that of cotyledon higher.
受异常高温的突然袭击后，柑桔叶的光合速率迅速大幅度下降。
Leaf photosynthetic rate decreased significantly and rapidly as plants were subjected to extremely high temperature.
人们很早就已观察到低浓度亚硫酸氢钠处理能提高叶片净光合速率。
It was observed early that low concentrations of sodium bisulfite treatment increased net photosynthetic rate in leaves.
利用水培试验，研究了剪根等处理后水稻群体光合速率的动态变化。
The effects of wiping out roots on rice canopy apparent photosynthetic rate (CAP) after heading were studied with solution experiments.
因此，嫁接主要是通过扩大植株的总叶面积来提高植株的光合速率的。
Therefore, the photosynthetic rate of grafting plant increased mainly due to expanding total leaf area of melon plant.
结果表明：光合速率和叶绿素含量均随土壤水分的减少而呈下降趋势。
The results showed that the content of chlorophyll and photosynthetic rate were decreased with soil water decreasing.
研究了柑桔花期、幼果期的异常高温胁迫对柑桔叶片光合速率的影响。
The effect of high temperature stress on leaf photosynthesis of satsuma mandarins was investigated during blossom and young fruit stage.
红菜苔叶片叶绿素含量、叶面积指数及比叶重与群体光合速率成正相关；
B. campestris content of leaf chlorophyll, leaf area index , leaf area-weight ratio were positive significantly correlated with the PR.
通过盆栽试验研究鸡粪和奶牛粪对小麦和油菜光合速率及蒸腾速率的影响。
The result indicated that layer faeces and cow manure diversely affected the photosynthesis of wheat in different stages of growth.
交替隔沟灌溉不降低光合速率而蒸腾速率有所下降，并有利于提高蒸腾效率；
AFI can not decrease photosynthesis rate but it can decrease evaportranspiration rate and is helpful to increase evaportranspiration efficiency.
叶片光合速率强度的降低是造成叶片光合产物输出速率下降的主要原因之一。
This effect was positively correlated with decline of photosynthate export rate of the leaf and mainly attributed to the reduction of photosynthesis rate.
结果表明：连续阴雨环境使葡萄叶片净光合速率下降，转晴后净光合速率上升。
The results of research showed that the net photosynthetic rate decreased under (overcast) and rainy days and that would increase when it was cleared up.
衰老后期，根系活力、叶片光合速率和叶绿素含量快速下降，叶片气孔阻力增加。
Photosynthetic rate and chlorophyll content of flag leaf declined sharply, and leaf stomatal resistance increased rapidly in late period of senescence.
番茄叶片中叶绿素、类胡萝卜素含量增加；但净光合速率、气孔导度、蒸腾速率下降。
Chlorophyll and carotene content in tomato leaves increased, while net photosynthetic rate, stomatal conductance and transpiration rate declined.
叶片光合速率随土水势的下降而减小，抗旱性品种减小的幅度小于抗旱性较差的品种。
The photosynthetic rate of the leaves declined with the decrease of soil water potential, but drought-resistant varieties reduced less than drought-sensitive ones.
然后光合速率趋于稳定，再增加辐射能对光合速率没有影响，光合系统达到光饱和状态。
The rate then levels off, and additional radiant energy is without effect and the system is light saturated.
不同DCMU浓度处理叶片后延迟荧光强度与叶片光合速率的变化表现出很好的相关性。
With the different concentration of DCMU treatment, the intensity of the DF and net photosynthesis rate (Pn) behaved excellent correlation.
不同DCMU浓度处理叶片后延迟荧光强度与叶片光合速率的变化表现出很好的相关性。
With the different concentration of DCMU treatment, the intensity of the DF and net photosynthesis rate (Pn) behaved excellent correlation.
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