Abstract:

By exposing seedlings of Caragana korshinskii, Tamarix ramosissima and Amorpha fruticosa into outside condition without root protection, testing the seedling water content, resistance value and planting survival rate of the seedling exposed outside with different duration time, the paper studied the relationship between water loss, resistance value and planting survival rate of three tree species’ seedlings. The result showed that with the increasing of duration time of the seedling exposed in the air, the water content and the planting survival rate of the seedling reduced, but the accumulate of seedlings’ water loss and the resistance value of the seedling increased. When the planting survival rate of Amorpha fruticosa, Tamarix ramosissima, Caragana Korshinskii seedling was 40%, the water content and the resistance value for three tree species were 2.82 g、8.45 g、0.44 g and 32.75 MΩ、1.86 MΩ、19.82 MΩ respectively.