In order to solve the problem of how to sprinkle the soil repair powder that treatment of soil heavy metal pollu -tion,a simple and reliable Soil repair powder sprinkling evenly and mixing equipment was designed.This design de-scribes the general structure and working principle of soil repair powder sprinkling evenly and mixing equipment.The transmission system of the Soil repair powder sprinkling evenly and mixing equipment was designed.In combination with the fluidity of soil repair powder,the design of the material box was carried out,and the uniformity of the sower was de-signed in the Angle of the discharge track and the rail installation.The test results show that the soil repair powder sprin-kling evenly and mixing equipment to meet the design requirements.

The field experiment of in-situ measuring soil fixing capability by vetiver(Vetiveria zizanoides) in 10 cm and 20 cm depth with the anchor-shank tensiometer and self-designed shear box were conducted.The results showed that vetiver roots at tillering stage elastically deformed with small load,and the displacement increased with the increasing of load,and showed a liner relationship.When the load exceeded the maximum tensile strength of roots,the plastic deformation would occur.Load and displacement gradually deviated from linear relationship which showed the nonlinear elastic characteristics and sampling soil square breakdown from bulk soil finally.Compared with bare soil,the displacement of soil with vetiver was shorter under the same load,as showed the soil fixing capability of vetiver grass.Soil fixing capability of vetiver increased with root penetrating from 10 to 20 cm.