[Objective] The flexural mechanical properties of six plant branches during non-growth period in midwest area of Inner Mongolia were studied in order to provide a scientific reference for the selection of the wind-resistant and sand-reducing plant species and their mixed configuration.[Methods] By YG(B)026H-250 fabric strength machine and self-made clamps

the branch bending test was carried out indoors

and the anti-folding forceand flexural strength of the branches of the six plants were compared

and the influence of the branch length and diameter on the mechanical strength index was analyzed.[Results] ① In the range of 0.5~2.5 mm diameter

the bending strength of 6 kinds of plant branches increased with the increase of diameter

while the bending strength decreased in power function with the increase of diameter; ② The breaking strength and breaking strength of Caragana korshinskii branches were the largest when the branch length was 60 mm in the range of 0.5~2.5 mm

the values were 51.700 N and 33.510 MPa

respectively

the breaking strength and breaking strength of Tamarix chinensis branches were the largest when the branch length was 80 mm

the values were 61.777 N and 30.821 MPa

respectively

and the breaking strength and breaking strength of Salix cheilophila branches were the largest when the branch length was 100 mm

the values were 62.237 N and 33.156 MPa

respectively.[Conclusion] The anti-folding force and flexural strength of 6 plant shoots were inconsistent with the increase of diameter and length of shoots during non-growth period

indicated that the effects of anti-folding force and flexural strength of shoots were different in plant species and branch length. It also proved that the combination of multiple trees should be the optional choices to realize the soil and water conservation function especially in the ecological restoration.