This paper was undertaken to study the regulative effects of the exogenous ABA and Ca~(2+) on photosynthesis, photosynthate transport and the related physiological indexes of Populus×euramericana cv.‘Nanlin95’by indoor water culture and outdoor cutting, thereby to explore the regulative effect of exogenous ABA and Ca~(2+) on the growth of poplar cuttings. The results showed as follows:
1. In a certain concentration range, the growth of water cultivated poplar seedlings would be improved with acc...