摘要
在干旱季节里测定自然条件下引种牧草柳枝稷与驯化本地天然牧草白羊草的一些光合生理生态特征日变化的结果表明 ,前者之所以呈现较高的光合速率主要是其具有较强的叶肉细胞羧化能力 ,较低的气孔导度降低了蒸腾 ,从而提高了水分利用效率 。
Diurnal changes of photosynthesis characteristics of Old World bluestems(Bothriochia ischaemum)and swichgrass(Panicum virgatum)under natural dry conditions in Loess hilly-gully area of China were studied. The results showed that the switchgrass had relative bigger photosynthetic rate, smaller transpiration rate and bigger water use efficiency. As to bluestems, the switchgrass's bigger photosynthetic rate may be caused by its high Rubisco activity because of relative smaller stomatal conductance.
出处
《中国草地》
CSCD
2003年第1期1-4,共4页
Grassland of China
基金
国家重点基础专题项目 (G19990 1170 8)资助
