Project Name: Underground Fertilization and Irrigation Technology of Economic Forest in Arid Areas

Project Owner: Ningxia University

Project Profile: The embedding mode of water injection pipe in the root area of jujube tree is shown in Fig. 1 and Fig. 2. And the buried depth of the water injection pipe is 40 cm, 30 cm away from the main stem of the jujube tree.  The buried position of the vertical pipe is 450 to the north-south (Y-axis) direction of the planting line of jujube tree. The horizontal outlet pipe at the bottom is parallel to the east-west (X-axis) and south-north (Y-axis) direction, respectively. The pressure and flow rate of water injection are adjusted by the forward pressurized variable frequency pump, pressure gage and flow meter. Monoliths method in partition cell is adopted. The rectangular coordinate system is established with the intersection of jujube tree trunk and the ground as its origin. It is defined that the east of the origin is the positive direction of x axis, the north of the origin is the positive direction of y axis, and the vertical downward direction of the origin is the positive direction of z axis. The pressurized water injection pipe is buried in the southeast direction (yox quadrant) and 450 along the X-axis (as shown in figure 2). The length, width and height of the earth-pillars are 210cm×210cm×100cm, i.e. -110≤x≤110, -110≤y≤110, -110≤z≤110 (unit: cm). The soil column is vertically divided into 5 layers with a thickness of 20cm. Each floor is divided into 6 sections with 36 30 cm×30 cm elemental area along x and y directions.

Contact Person: Li Yinghai

Phone Number: 18809506611