[Physicomechanical properties of plantation poplar wood under different eco-environments]

The measurement of the physicomechanical properties of 9 plantation poplar I-69 (Populus deltoides CV. 1-69/55) woods under fertilization and seasonal flooding showed that compared with no fertilization, fertilization increased the ring width, static modulus of elasticity, and compressive strength parallel to the grain by 0.99 % (P > 0.05), 2.73% (P < 0.05) and 1.06% (P < 0.05), while decreased the air-dry radial, tangential, volumetric shrinkage, oven-dry radial, tangential, volumetric shrinkage, basic density, MOR, and dynamic modulus of elasticity by 4.2%, 7.7%, 6.6%, 15.6%, 6.3%, 11.1%, 2%, 1.79% and 8.13%, respectively. Seasonal flooding decreased the basic density, air-dry radial, tangential, volumetric shrinkage, oven-dry radial, tangential, volumetric shrinkage, MOR, MOE, and compressive strength parallel to the grain by 5.5%, 11.1%, 9.2%, 9.6%, 16.7%, 10.9%, 8.5%, 24.29%, 18.18% and 16.81%, respectively, in comparing with non-flooding.