| Abstract: Under drought stress, study was carried out on the survival period, the growth efficiency, and the physiological biochemical properties of Photinia serrulata seedlings in the pot experiment. The result showed that potted seedlings survival time was prolonged by 3.5~38.5 days. It was prolonged 0~4 weeks since the growth of seedlings was retarded. With the increasing of hydrogel application, the accumulation of free proline and soluble sugar in leaves of seedling was postponed, and the amount decreased. On the 24th day after watering, the net photosynthetic rate (Pn), transpiration rate (Tr) and stamatal conduction were improved by 5.6~168.9%, 28.6~2342.6% and 0~4700%, respectively, by application of hydrogel. The more hydrogel was applied, the more effectively drought stress on the plants was mitigated. |
