Subsurface pipe drainage technology can effectively improve coastal saline land in Northern China. We explored an okra (Abelmoschus esculentus L.)-assisted subsurface system to the water and salt discharge performance benefits. In this study, simulation box experiment was conducted research response of root weight density (RWD). The drain outflow, soil salinity, sodium adsorption ratio were det...

Electrical resistivity tomography data were acquired in proximity to the coal combustion residual landfill an effort image and analyze seepage pathways through shallow soil underlying karsted limestone bedrock. The water table is at a depth of more than 45 m. most prominent subsurface identified on electrical are located immediately adjacent toe attributed stormwater run-off. moisture content a...

Subsurface drainage is an important agriculture measure. It primary to select suitable drain pipes and envelopes for efficient subsurface drainage. And now, corrugated drains geotextile are widely used. However, the effects of perforations on not well understood. This study conducted a series sand tank experiments steady-state flow with or without different perforation patterns. The profile hea...

Conventional material removal of BK7 optical glass will normally result in brittle fracture at the surface, generating severe subsurface damage and poor surface finish. Subsurface damages induced by grinding strongly influence the mechanical strength and optical quality of optical glasses. However, through ductile mode grinding it is possible to reduce the surface and subsurface cracks. It is m...

Organic fertilizer applications and subsurface drainage are two important measures for improving coastal saline soil; however, nitrous oxide (N2O) emissions from soil under a combination of these seldom evaluated. In this study, cultivated with sunflowers (Helianthus annuus L.) was employed as an experimental system. Prior to the experiment, soils were buried three different spacings (10 m (S1)...