Ulmus parvifolia Jacq seedlings are studied on different drought stress and rehydration compensation and identify of osmotic adjustment solute and protective enzyme activity in order to explore the drought tolerance and compensation mechanism of the Ulmus parvifolia Jacq seedlings and provide theoretical basis for the further study of stress tolerance and compensatory effect of Ulmaceae plants. The results showed that the content of osmotic adjustment solute(soluble protein,soluble sugars,free proline) and ...