Installation of Sheet-pipe Subsurface System in Indonesia for Effective Drainage and Improved Soil Aeration
Keywords:
soil aeration , rice field, subsurface irrigation, subsurface drainage, farmland hydrologyAbstract
The installation of the Sheet-pipe system in Indonesia has been a significant development since 2017. This collaborative effort between the Ministry of Agriculture and a Japanese construction company has focused on enhancing water management in rice paddies. Specifically, the system was installed at the Sukamandi Rice Research Center in West Java, covering an area of 3600m². Seven parallel sheet-pipe lines, each measuring 100 meters in length and with a depth of 40 cm, were laid out.
These sheet-pipe lines were consolidated into three drainage outlets, regulated by valves. The primary objective was to assess the drainage capacity and land drainage modulus using the sheet-pipe system. Measurements were taken from the drainage water exiting each pipe using gravimetric methods at specific time intervals. The assessments were conducted under saturated soil conditions.
The results revealed a total drainage rate ranging from 0.396 l/s to 1.431.l/s The maximum drainage rate per sheet-pipe lane was 0.20 l/s, and the drainage modulus was 275 m3 day-1 ha-1. These findings demonstrate the effectiveness of the sheet-pipe system in facilitating water reduction to the sheet-pipe depth and improving soil aeration.
